3 *---------------------------------------------------------------------
6 * 1. wsr88d_m31.c: Simplified the WSR-88D ray structure and supporting code.
7 * Removed function read_data_moment. Added support for dual-polarization
9 * Added function get_wsr88d_unamb_and_nyq_vel.
10 * 2. Added support for Sigmet 2-byte data types, as well as HydroClass 1 and 2
11 * byte types. Files involved: nsig_to_radar.c, nsig.c, nsig.h, volume.c.
12 * Modified nsig_to_radar.c and rsl.h to handle Sigmet dual PRF. Much
13 * thanks to Fabio Sato and Cesar Beneti for the dual PRF code.
14 * 3. Completed DORADE ingest. Files involved: dorade_to_radar.c, dorade.c,
16 *---------------------------------------------------------------------
17 * v1.40 Released 10/10/2008
19 * 1. wsr88d_m31.c (load_wsr88d_m31_into_radar): Corrected a potential problem
20 * in which the end of sweep or volume might occur at a point in the program
21 * that was isolated from the code that handles that condition.
22 * Store vcp in radar header.
23 * 2. rsl.h: Added vcp to radar header structure for WSR-88D.
24 * 3. nsig_to_radar.c: Corrected a problem involving Extended Header, which
25 * when present, caused elevation in ray header to be set to 0.
26 * 4. wsr88d_m31.c (wsr88d_load_ray_into_radar): Changed the way we determine
27 * whether or not to keep the reflectivity field (we don't want it from
28 * Doppler split cuts). The previous method was inadequate for VCP 121.
29 * 5. read_write.c (RSL_write_radar_fp, RSL_write_volume, RSL_write_sweep)
30 * (RSL_write_ray): Initialize header_buf to zero to avoid junk in output
31 * files. This provides clean outputs for comparing in test situations.
32 *---------------------------------------------------------------------
33 * v1.39 Released 07/24/2008
35 * 1. Added wsr88d_m31.c. It contains routines to handle new Message Type 31
36 * in WSR-88D Level II Build 10.
37 * 2. wsr88d_to_radar.c: Modified to call message 31 routine.
38 * 3. wsr88d.c: Added code for VCPs 211, 212, 213.
39 * 4. lassen_to_radar.c: Added a fix for PhiDP provided by Scott Collis of BMRC.
41 *---------------------------------------------------------------------
42 * v1.38 Released 11/29/2007
44 * 1. wsr88d.c (wsr88d_read_sweep): Modified to handle unusual message packets
45 * at start of WSR-88D files from some future GPM sites.
47 *---------------------------------------------------------------------
48 * v1.37 Released 06/19/2007 (Severity: low)
50 * 1. radar_to_uf.c, uf_to_radar.c: Modified to use Local Use Header to store
51 * and retrieve WSR-88D VR azimuth. This is necessary because WSR-88D runs
52 * separate scans for DZ and VR at lower elevations, which means that they
53 * have different azimuths for a given ray. Thanks go to Pat Kennedy of CSU
54 * for discovering this problem and for bringing it to our attention.
55 * 2. lassen_load_sweep in lassen_to_radar.c: Removed 1.4 dB correction for
56 * reflectivity--BMRC version no longer uses it.
58 *---------------------------------------------------------------------
59 * v1.36 Released 08/29/2006 (Severity: low)
61 * 1. Forgot to put the modified wsr88d_locations.dat file into previous
64 *---------------------------------------------------------------------
65 * v1.35 Released 08/28/2006 (Severity: low)
67 * 1. lassen_to_radar.c: fixed a bug in lassen_load_sweep where sweep index
68 * was being used for sweep number in headers.
69 * 2. radar.c: Modified RSL_get_volume to return volume for any field type.
70 * It had been limited to velocity, spectrum width and reflectivity types.
71 * 3. Added SQ_INDEX for Signal Quality Index field. Files modified: rsl.h,
72 * volume.c, nsig_to_radar.c, nsig.h, uf_to_radar.c, radar_to_uf.c.
73 * 4. wsr88d_locations.dat modified to change height units from feet to meters.
74 * Thanks go to Dave Makofski for finding and fixing that one.
76 *---------------------------------------------------------------------
77 * v1.34 Released 02/15/2006 (Severity: low)
79 * 1. wsr88d.c: Fixed a bug in checking msg_type. The problem occurred while
80 * processing data from Houston, which recently switched over to the new
81 * Open RDA (ORDA) being implemented by NEXRAD. Msg_type is in the
82 * righthand byte of a two-byte word, the left containing Channel ID,
83 * but the full two-byte value was being used to check msg_type. This
84 * became a problem when ORDA used a non-zero value for Channel ID.
85 * 2. wsr88d.c and wsr88d_to_radar.c: Added information for new VCPs 12 and
87 * 3. Added Huntsville site to wsr88d_locations.dat.
89 *---------------------------------------------------------------------
90 * v1.33 Began 02/25/2004. Released 08/27/2004 (Severity: low)
92 * 1. Modified wsr88d_to_radar.c and anyformat_to_radar.c to handle change in
93 * WSR-88D header record for Level II Build 5 data format.
94 * 2. Fixed a bug in wsr88d.c, wsr88d_read_sweep, which caused the last ray
95 * of sweep to be deleted along with empty rays in second tilt and above.
97 *---------------------------------------------------------------------
98 * v1.32 Began 11/05/2003. Released 02/13/2004 (Severity: low)
100 * 1. Changed computation of sweep seconds in nsig_to_radar.c to eliminate
102 * 2. wsr88d_to_radar.c: removed call to wsr88d_get_wavelength, which computed
103 * the WSR-88D wavelength when parameters were available, or returned a
104 * constant otherwise. Replaced with constant wavelength of 10 cm. Thanks to
105 * Joe Holmes of SIGMET for noticing differing wavelengths between fields.
106 * 3. Added ingest for Rainbow format. Only handles DZ.
108 *---------------------------------------------------------------------
109 * v1.31 Began 04/30/2003. Released 09/03/2003 (Severity: low)
111 * 1. nsig_to_radar.c: removed unused #define, made some cosmetic changes in
112 * code and comment alignment.
113 * 2. Makefile.am: Added line to install include-directory under target
115 * 3. Added code to configure.in to fix yywrap unresolved reference that
116 * occurred when installing rsl when the TSDIS toolkit was not installed.
118 *---------------------------------------------------------------------
119 * v1.30 Began 07/30/2001. Released 03/13/2003 (Severity: low)
121 * 1. Increased the size of parameter arrays in nsig.c as recommended by
122 * Paul Kucera, to accommodate NPOL polarimetric parameters.
123 * 2. Fixed a bug in nsig_endianess in nsig.c.
124 * 3. Modified uf_to_radar to compute unambiguous range using PRF. Reduced
125 * UF record length by removing extra byte at end of record. Made to handle
126 * 4-digit years (previously assumed 2-digit, as declared in UF documention).
127 * 4. Modified hdf_to_radar to use more accurate value for sweep.h.nrays.
128 * 5. Corrected computation in function wsr88d_get_azimuth_rate in wsr88d.c.
129 * 6. Fixed bug in sweep rate computation in wsr88d.c
130 * 7. Changed wsr88d_ray_to_float in wsr88d.c to use field data pointers
131 * provided in the data, instead of computing offsets. The latter method is
132 * incorrect according to NOAA Radar Operations Center.
133 * 8. Modified radar_to_uf to get fixed angle for mandatory header from value
134 * stored in ray. Previously used average elevation of sweep.
135 * 9. Added examples/adjust_gate_size.c, and added enhanced version of qlook.c
137 *10. Fixed problem in which rsl libraries could not be built if a library
138 * didn't already exist in the target directory. Brought configure.in up to
139 * date with autoconf version 2.53 standards. Removed acconfig.h.
140 *11. Removed outdated email addresses found in comments.
142 *---------------------------------------------------------------------
143 * v1.29 Began 09/19/2000. Released 4/3/2001 (Severity: low)
145 * 1. Modified radar_to_hdf_1.c maskBuild() to build MZ mask differently:
146 * maskBuild was checking where CZ and DZ volumes were equal
147 * to build MZ volume (mask). Now, maskBuild just checks where
148 * CZ volume == BADVAL, for runtime speed, and because the comparison between
149 * CZ and DZ volumes was corrupted by the addition of qcParm[ZCAL] to
150 * each CZ range bin in level_1_qc.c qualityControl(). This change is
151 * compatible with Danny Rosenfeld's algorithm by which CZ range bins
153 * 2. Included Stacy Brodzik's modifications for storing calibration constants
154 * in UF (radar_to_uf.c, uf_to_radar.c).
155 * 3. Corrected version string and units for sweep rate written to UF mandatory
156 * header in radar_to_uf.c, thanks to Joseph Holmes of Sigmet for catching
157 * the inaccuracies. Corrected rounding error in latitude/longitude for UF
158 * mandatory header in same program. Modified assignments of sweep rate
159 * and/or azimuth rate in uf_to_radar.c and hdf_to_radar.c
161 *---------------------------------------------------------------------
162 * v1.28 Began 03/23/2000. Released: 7/24/2000 (Severity: low)
164 * 1. Added 3 functions to volume.c :
165 * RSL_add_dbz_offset_to_volume() , RSL_add_dbz_offset_to_sweep(),
166 * RSL_add_dbz_offset_to_ray()
167 * 2. Modified nsig.h , nsig_to_radar.c , volume.c to handle sigmet's
168 * RhoHV and PhiDP fields.
169 * 3. Modified volume.c to fix problem with subsequent calls to
170 * read_these_sweeps()
171 * 4. Modified uf_to_radar.c to compute unambiguous range for
174 *---------------------------------------------------------------------
176 * v1.27 Began 01/11/2000. Released: 2/17/2000 (Severity: low)
178 * 1. Modified files radar_to_hdf_1.c and radar_to_hdf_2.c
179 * to accomodate random ray lengths, eg, Berrimah data.
181 *----------------------------------------------------------------------
182 * v1.26 Began 12/11/1999. Released: 12/21/1999 (Severity: low)
184 * 1. Configuration change for rapic.l and rapic.y.
185 * 2. Changed dependency for rsl.h and wsr88d.h
187 *----------------------------------------------------------------------
188 * v1.25 Began 11/30/1999. Released: 12/10/1999 (Severity: medium)
190 * 1. Merged branch v1.24.1.
191 * 2. Added configure/configure.in/Makefile.in.
192 * 3. Added Makefile.am (automake) and other related files.
193 * 4. Configuration is a snap:
195 * configure --prefix=/some/dir/to/install
198 *----------------------------------------------------------------------
199 * v1.24.1 Began 8/1/1999. Released: 11/30/1999 (Severity: new features)
201 * 1. Introduced radar->h.project[24] -- project name.
202 * 2. Added dorade ingest -- RSL_dorade_to_radar.
203 * 3. Added examples/kwaj_subtract_one_day.c -- fix KWAJEX dates.
204 * 4. Removed rsl_popen/pclose routines from gzip.c. I found
205 * a way to eliminate the 'Broken pipe' message, the message
206 * reappeared in linux 2.2.* series, by flushing the
207 * stream when looking at the magic numbers in anyformat_to_radar.c.
208 * 5. HDF ROUTINES ARE REMOVED. I have moved them to gvs for level_1.
209 * See gvs/src/gvslib/. That's where they live now. The interface
210 * RSL_hdf_to_radar and RSL_radar_to_hdf remain as hooks. If
211 * you have libgvs, then you can specify -DHAVE_TSDIS_TOOLKIT in
214 *----------------------------------------------------------------------
215 * v1.24 Began 6/25/1999. Released: 6/28/1999 (Severity: bug fix)
217 * 1. UF ingest improperly set the Fixed angle.
218 * 2. Removed max_reasonable_dbz (60) from gts.c. The app must decide
219 * what a max allowable dbz is.
221 *----------------------------------------------------------------------
222 * v1.23 Began 3/31/1999. Released: 4/2/1999 (Severity: upgrade)
224 * 1. Added EDGE format ingest. This requires the library ETOR
225 * which is obtained from Enterprise Electronics.
226 * To build this component, set -DHAVE_EDGE in Makefile.
228 *----------------------------------------------------------------------
229 * v1.22 Began 3/4/1999. Released: 3/4/1999 (Severity: bux fix)
231 * 1. Forgot to set the global 'rsl_kdp_wavelen' in nsig_to_radar.c.
233 *----------------------------------------------------------------------
234 * v1.21 Began 02/16/1999. Released: 3/4/1999 (Severity: minor bux fix)
236 * 1. UF code didn't recognize VE, now it does.
237 * 2. RSL_SPEED_OF_LIGHT unifies c throughout the library.
238 * 3. Modification to KDP processing for Sigmet. New
239 * F and INVF functions.
241 *----------------------------------------------------------------------
242 * v1.20 Began 11/12/98. Released: 01/25/1999 (Severity: bug fix/upgrade)
244 * 1. Fixed RADTEC ingest. Does RHI too, but,
245 * RSL doesn't have any good RHI image routines.
247 * 2. Added: RSL_set_color_table
248 * RSL_get_color_table
250 * 3. Added: '-b x' option to any_to_gif. This makes images black below
251 * x dbz. This is a simple noise filter.
252 *----------------------------------------------------------------------
253 * v1.19 Began 9/15/98. Released: 9/23/98 (Severity: bug fix)
255 * 1. Modified file volume.c . New INV_F, _F routines for diff refl.
257 * 2. Created examples/images to hold a base-line set of images
258 * to compare when running 'run_tests'. Modified run_tests
261 *----------------------------------------------------------------------
262 * v1.18 Began 4/28/98. Released: 8/13/98 (Severity: upgrade)
265 * RSL_radtec_to_radar -- in radtec_to_radar.c
266 * RSL_fix_time -- in volume.c
273 * 3. Modified image generation. Images are produced out to 'range'
274 * specified. Each image pixels is no longer 1km, but radius/range.
276 * 4. any_to_gif can now accept range and image size arguments.
278 * 5. RADTEC requires PKWARE routines explode and crc32.
279 * RADTEC is built into RSL, if you specify -DHAVE_PKWARE in
280 * the Makefile. When using RADTEC, you must link your application
281 * staticly; with -static.
283 * Contact PKWARE at 414-354-8699.
285 * 6. Modified radar_to_hdf_1.c. Removed ZDR data from 1C-51 HDF.
287 * 7. Moved HDF_FILE_VERSION definition from toolkit_1BC-51_appl.h
288 * into the application level_1.c
290 *----------------------------------------------------------------------
291 * v1.17 Began 4/23/98. Released: 4/28/98 (Severity: upgrade)
293 * 1. Finally received info regarding KDP (KD_INDEX) for SIGMET.
294 * Assumming the units are similar for LASSEN. Boosted nsig_to_radar
295 * to recognize KDP. It is really KDP * wavelength.
296 * The units are deg*cm/km. You must divide out the wavelength,
297 * if that is desired.
299 * 2. BADVAL/NOECHO mod for nsig_to_radar.c. This should affect
300 * the values that may be stored in any possible UF output.
302 * WTD : lassen_to_radar.c - check the ZDR conversion, if any. Do
306 *----------------------------------------------------------------------
307 * v1.16 Began 3/6/98. Released: 4/21/98 (Severity: bug fix/upgrade)
309 * 1. Changed how any_to_gif output's filenames produced. Now, they
310 * are written to stdout. -v (verbose) and -V (all volume) options
311 * are added. Changed image_gen.c (RSL_volume_to_gif) to output
312 * filenames to stdout.
314 * 2. You really do need 'bison' (GNU yacc), 'flex' (GNU lex) and
315 * make (GNU make) to build this library. This has been true
316 * since v1.15 when I introduced the rapic format. These programs
317 * are superior to those on your stock Unix system, so take the
318 * time to install them.
320 * 3. README explains how to apply patches.
322 * 4. Eliminated the reduce/reduce conflict in rapic.y
324 * 5. Year 2000 compliant.
326 * 6. I forgot the format in sprintf. See rapic.y.
328 *----------------------------------------------------------------------
329 * v1.15 Began 2/20/98. Released: 3/4/98 (Severity: bug fix/upgrade)
331 * 1. Michael Whimpey from BMRC, Australia changed code, for the
332 * different callibrations, between, Pre_mctex, mctex, Gunn_Pt
333 * periods. Please see code where there is m.whimpey. See
336 * 2. Added RAPIC format ingest. RSL_rapic_to_radar.
337 * I used GNU Bison (YACC) and GNU Flex (LEX) to code the RAPIC ingest.
338 * This format is used by the Berrimah radar. See rapic_to_radar.c,
339 * rapic_routines.c, rapic.y, and rapic.l.
340 * Not tested w/ older YACC and LEX found on older Unix systems.
342 * 3. Fixed a bug regarding the reading of stdin streams. Now
343 * you can read compressed or uncompressed files from stdin.
344 * Previously, you couldn't specify NULL as a filename and
345 * have it work reliably in all cases for any file format.
346 * This bug was found by accident and it is nothing you should
347 * be worried about in earlier RSL releases. The reason you need
348 * not worry about it is because 'RSL_anyformat_to_radar' cannot
349 * accept NULL as a filename. For you to notice this, you must
350 * have called the specific ingest routine for the format
351 * being read: RSL_lassen_to_radar, for example.
353 * 4. Bug in the UF ingest. The scale_factor needs to be float.
354 * When it was 'int', round off errors (truncation) were
355 * happening. This affected the Velocity data, only. The reflectivity
356 * data seemed unaffected, because, the magnitude of the values
357 * was high enough to avoid truncation.
358 *----------------------------------------------------------------------
359 * v1.14 Began 2/2/98. Released: 2/3/98 (Severity: upgrade)
361 * 1. Added calibration for Gunn Point radar. Assumes that
362 * the radar name will be 'Gunn_Pt'.
364 *----------------------------------------------------------------------
365 * v1.13 Began 1/16/98. Released: 1/26/98 (Severity: minor bug fix)
369 * 1. radar_to_hdf_1.c: Changed decision algorithm regarding
370 * whether or not to write a VOS into a 1C-51 HDF file.
371 * 1C-51 HDF VOS time_slot status is encoded within the
372 * metaData field 'TK_GEN_DATE_INPUT_FILES'.
374 *----------------------------------------------------------------------
375 * v1.12 Began 1/12/98. Released: 1/12/98 (Severity: minor bug fix)
377 * 1. Changed HDF metadata item for empty granules.
379 *----------------------------------------------------------------------
380 * v1.11 Began 12/17/97. Released: 12/17/97 (Severity: minor bug fix)
382 * 1. Increased the size of pipecmd in RSL_write_gif and TK_MAX_FILENAME to 256.* 2. Modified image_gen.c to increase the data range of Zdr values.
383 * 3. Bug fix in radar_to_hdf_1.c: No longer dumps core for "tiny" sweeps
384 having fewer than 5 rays.
386 *----------------------------------------------------------------------
387 * v1.10 Began 8/27/97. Released: 10/21/97 (Severity: minor upgrade)
389 * 1. Modified ZDR image generation: rsl.h, image_gen.c, ZDR color tables.
390 * 2. Added South Africa data format ingest. Not possible to
391 * interface in RSL_anyformat_to_radar, at this time. The format
392 * is primitive and I need to convert RVPC to dBZ.
393 * 3. Modified HDF component to maintain integrity of anomalous_condition
394 * flags. (RFVAL, APFLAG, NOECHO, BADVAL)
395 * Files: toolkit_1BC-51_appl.h, hdf_to_radar.c, radar_to_hdf_2.c
396 * 4. Modified radar_to_hdf_1.c for TSDIS/DAAC metadata requirements.
397 * 5. Modified any_to_gif.c to output site and date/time for image filenames.
398 * 6. Added QC algorithm parameter. Modified files:
399 * toolkit_1BC-51_appl.h, radar_to_hdf_1.c, radar_to_hdf_2.c,
402 *----------------------------------------------------------------------
403 * v1.9 Began 8/18/97. Released: 8/18/97 (Severity: bug fix)
405 * 1. Mofified radar_to_hdf_1.c : Metadata mods for TSDIS.
407 *----------------------------------------------------------------------
408 * v1.8 Began 7/30/97. Released: 8/05/97 (Severity: upgrade)
410 * 1. Added RSL_read_these_sweeps. Specify specific sweep numbers for
411 * ingest. This drastically speeds up ingest, if you're only interested
412 * in the first or first couple of sweeps. For example, making
420 * mcgill -done. BUT, apparently, mcgill ingest is broken!!!
421 * When did this happen?
423 * 2. Added RSL_load_zdr_color_table();
424 * Includes color tables for this field. See colors/
426 * 3. More HDF mods; more warning messages.
428 * 4. The TRMM Office has fixed several bugs in the TSDIS toolkit.
429 * For proper HDF creation, that conform to TSDIS HDF specifications,
430 * you will need toolkit 4.5r1.1.
432 * Toolkit 4.5r1.1 is an unofficial release; the TRMM office will
433 * pass this out upon request.
435 *----------------------------------------------------------------------
436 * v1.7 Began 7/23/97. Released: 7/25/97 (Severity: bug fix)
438 * 1. Handles corrupt SIGMET files more gracefully.
440 * 2. All lat/lon (degree,minute,second) triplets have the same sign.
441 * Except, if UF, then what ever the file tells me and if they're
442 * not all the same sign, then you'll have
443 * to correct the UF w/ an RSL application. In other words, UF
444 * stores the lat/lon as deg/min/sec and they have their own signs;
445 * Strict UF have deg/min/sec all w/ the same sign, anyway.
447 * 3. Minor changes to HDF component of RSL.
448 *----------------------------------------------------------------------
449 * v1.6 Began 5/02/97. Released: 7/23/97 (Severity: bug fix)
451 * 1. wsr88d_to_radar.c -- Was too permissive. No longer defaults to KMLB.
452 * If unable to establish a valid site based on callID or first_file,
455 * 2. 18 Jul 97 Kolander
456 * Modified radar_to_uf.c & uf_to_radar.c : Fixed some incorrect and
457 * missing sweep and ray header values. Salvaged some numerical precision.
459 * 3. Fixed a time problem in nsig_to_radar.c. Daylight savings time.
461 * 4. Saves lat/lon on each ray for UF.
463 *--------------------
466 * Modifications to radar parameter calulations in:
467 * wsr88d_to_radar.c, wsr88d.h, wsr88d.c, nsig_to_radar.c,
468 * lassen_to_radar.c, rsl.h
470 * Modified HDF-related files:
471 * hdf_to_radar.c toolkit_1BC-51_appl.h
472 * and split file 'radar_to_hdf.c' into two files:
473 * radar_to_hdf_1.c and radar_to_hdf_2.c
474 * Can handle oddly sized and/or corrupt VOSs.
475 *----------------------------------------------------------------------
476 * v1.5 Began 3/17/97. Released: 4/30/97 (Severity: minor upgrade)
478 * 1. Additional error checking in wsr88d.c to warn when number of gates
479 * expected is exceeded.
480 * 2. Changes by Mike Kolander affect the HDF component of RSL. This
481 * version of RSL works with the TSDIS toolkit 4.0.
482 * 3. Changes to carpi and cube functions, see below.
483 *-------------------------
484 * Date: 26 Mar 97 kolander
486 * Files: radar_to_hdf.c, hdf_to_radar.c
487 * Moved QC parameters out of the metadata string into VOS comments
490 * Files: rsl.h, anyformat_to_radar.c
491 * Moved enum File_type definition from anyformat_to_radar.c into
493 *--------------------------
494 * Date: 17 Mar 97 kolander
497 * Changed carpi structure:
498 * Added f, invf fields.
499 * (Carpi_value **)data is now a doubly indexed array 'data[nrow][ncol]'
500 * Changed slice structure:
501 * Added f, invf fields.
502 * (Slice_value **)data is now a doubly indexed array 'data[nrow][ncol]'
503 * Added function prototypes for:
504 * RSL_free_carpi, RSL_free_cube, RSL_free_slice, RSL_new_cube,
505 * RSL_new_slice, RSL_carpi_to_cart, RSL_carpi_to_gif,
506 * RSL_carpi_to_pict, RSL_carpi_to_ppm, RSL_carpi_to_pgm
510 * RSL_free_slice, RSL_new_slice, RSL_new_cube, RSL_free_cube
511 * Modified functions:
512 * RSL_volume_to_cube, RSL_get_slice_from_cube
517 * Modified functions:
518 * RSL_new_carpi, RSL_find_rng_azm, RSL_cappi_to_carpi
522 * (These are modified clones of the sweep image_gen functions.)
523 * RSL_carpi_to_cart, RSL_carpi_to_gif, RSL_carpi_to_pict,,
524 * RSL_carpi_to_ppm, RSL_carpi_to_pgm
526 *----------------------------------------------------------------------
527 * v1.4 Began 12/24/96. Released: 3/7/97 (Severity: bug fix)
529 * 1. Some WSR88D files have a 'radial status' of 28. This is un-
530 * documented. I assume it means some catastrophic reset has occured.
531 * Therefore, the code that counts the number of rays is modified
532 * to rely on the 'ray_num' reported upon reading the file.
533 * Also, I assume that when the status tells me that I'm reading
534 * the 'start of a new elevation' (status == 0) that all subsequent
535 * records will overwrite previously stored rays.
537 * I've seen this status number(28) occur, rarely, in the
538 * WSR88D data. See wsr88d.c.
540 * 2. Removed kwaj component. - Mike.
542 * 3. Installs toolkit_1BC-51_appl.h in INCDIR. This file is needed
543 * only if you plan to use the HDF component.
545 * 4. Fixes a freeing bug in nsig.c. Added member nparams to the
546 * NSIG_Sweep structure to track this for the free routine.
548 * 5. Ray indexing bug fixed in wsr88d_to_radar.c which produced an
549 * invalid time when the first wsr88d ray was null. Basically, using
550 * 'i' instead of 'iray'.
551 *----------------------------------------------------------------------
552 * v1.3 Began 08/26/96. Released: 12/17/96 (Severity: upgrade)
554 * 1. Lassen field 'Zdr' loaded into RSL 'ZD' field, not the RSL 'DR'
555 * field, as originally envisioned within HDF functions. Henceforth,
556 * 'ZD' represents (linear) reflectivity depolarization ratio:
557 * ZD = 10log(Z_horiz/Z_vert) in units dB
558 * as opposed to the circular depolarization ratio.
560 * What exactly are the RSL 'LR' and 'DR' fields??
563 * For consistency of field nomenclature:
565 * Renamed 'CR' to 'CD'. (corrected ZDR for 1C-51)
566 * 'MR' to 'MD'. (1C-51 mask for ZDR)
569 * CD_INVF returns ZD_INVF
571 * 2. Sort by time forgot to compare the hour field. Minor fix.
573 * 3. Fix z_to_r to return proper value.
575 * 4. Lassen ingest: fix the sign of deg/min/sec so they match.
576 * Trusting that the sign of the deg is correct.
578 * 5. Added RSL_select_fields. This reduces memory requirements
579 * upon ingest. You can select, "all" (default), "none" (just to
580 * get header info) or "dz", "vr", ...
588 * kwaj not applicable as it only has DZ.
590 * mcgill not applicable as it only has DZ.
591 * toga not done. If you want to do this, feel free.
593 * 6. Uses 'gzip -1'. This cuts the time for making UF files in half.
595 * 7. Renamed 'makefile' to 'Makefile'
597 * 8. The HDF component has changed drastically and is not compatable
598 * with previous versions. It may change again, contingent upon
599 * the TSDIS toolkit 3.5.2.1 (as of 12/17/96). Expect minor changes
600 * to the HDF component in the future.
602 * 9. Pruning of sweeps and rays now sets moved object pointers to
605 *10. Updated nsig_to_radar.c to check for ant_scan_mode. If mode is
606 * RHI, then return NULL because RSL can't handle RHIs. --Paul
608 *11. Split memory management routines for hdf processing. --Mike K.
609 *----------------------------------------------------------------------
610 * v1.2 Began 08/26/96. Released: 9/6/96 (Severity: minor bug-fix upgrade)
612 * 1. Eliminated zero sized arrays in lassen.h. SGI 'cc' can't
613 * handle zero sized arrays. This brings back the -pedantic
616 * 2. Implemented popen and pclose (called rsl_popen and rsl_pclose)
617 * to eliminate the annoying message 'Broken pipe.' on SGI and HP
620 * 3. The HDF component is incompatable with earlier versions because
621 * of the use of additional fields. It now uses the MASK fields
622 * and calibration information. It should be considered that the
623 * HDF component is in a state of flux.
625 * 4. Minor bug in nsig.c wherein when rays are missing (0 sized)
626 * that not all rays present will be ingested. This is fixed.
628 * 5. Copyrighted the software.
630 * 6. 'anyformat_to_radar' can recognize HDF files.
632 *----------------------------------------------------------------------
633 * v1.1 Began 08/21/96. Released: 08/22/96 (Severity: SERIOUS bug fix)
634 * If you have already upgraded to RSL v1.0.1, then this is a minor
637 * 1. I should have left well enough alone. But, getting rid
638 * of rsl.h.template in favor of only having rsl.h has revealed
641 * THIS BUG IS IN V1.0 ONLY.
643 * The type for 'Range' could be built into
644 * the RSL differently than how your application is built.
645 * For instance, if RSL is built with USE_TWO_BYTE_PRECISION, then
646 * your application will think 'Range' is a one byte storage class,
647 * because the default RSL configuration is to use one byte storage.
649 * This bug slipped through all the tests that I perform and was
650 * discovered only when using the radar_to_hdf component of RSL.
651 * Thanks to Mike Kolander for finding this one.
653 * Configuration instructions are changed so that you must edit
654 * rsl.h to use one byte precision.
656 * 2. All MCTEX fields are recognized and loaded into Radar.
657 * h.f and h.invf are modeled after LASSEN conversion functions.
658 * 3. Added radar_to_hdf.o to makefile.
659 * 4. In examples/any_to_gif.c, outputs all fields.
660 * 5. Three convience arrays are defined in rsl.h.
663 * c. RSL_invf_list[];
664 * Each array is MAX_RADAR_VOLUMES long and contain: strings
665 * representing the field type, a pointer
666 * to the F function, and a pointer to the INVF function.
668 * Usage is conditional by defining USE_RSL_VARS before including
670 * #define USE_RSL_VARS
673 * Normally, you shouldn't worry about this.
675 * 6. Removed -pedantic compile flag because LASSEN code has a 0
676 * sized array -- no warnings.
677 *----------------------------------------------------------------------
678 * v1.0 Began 04/19/96. Released: 8/18/96 (Severity: minor upgrade)
680 * 1. Ignore SIGPIPE when making images.
681 * 2. Can read UF files of MCTEX data. This UF file contains
682 * RH and PH fields. This is LASSEN data that has been converted
683 * to UF via a sun program. It is the LASSEN II format.
684 * 3. Fixed date/time == 0 when calling uf_to_radar multiple times.
685 * The second and subsequent calls produced 0 for the
686 * radar->h.year/month/day and radar->h.hour/min/second.
687 * 4. Always allocate MAX_RADAR_VOLUMES for new radars during ingest.
688 * This will allow one to test any volume index for presence.
689 * 5. Set the default functions to DZ_F. This sets CZ_F correctly.
690 * It is unclear if the other conversion fuctions are properly
692 * 6. Pure UF file ingest bug fixes.
693 * 7. Added RSL_hdf_to_radar - Mike Kolander.
694 * 8. Added RSL_radar_to_hdf - Mike Kolander.
695 * 9. New field type: XZ for X-band Reflectivity.
696 * 10. Working version of nsig_to_radar. - Paul Kucera.
697 * This version works on both big endian and little endian (Linux),
698 * and, for both version 1 and version 2 formats. Version 2
699 * files are generated on big-endian machines (so far, SGI Iris
700 * computers), whereas, Version 1 files were written on
701 * little-endian DEC computers. Two routines are provided:
703 * RSL_nsig_to_radar(char *infile);
704 * RSL_nsig2_to_radar(char *infile);
706 * Nsig ingest can handle nsig files/tapes that were
707 * written on a DEC (little endian) or an SGI (big endian).
708 * It is handled automatically by examination of the 'magic' bytes.
709 * You will note that the byte-ordering in the file is dependant
710 * on which machine wrote the tape or file. The New-SIGMET
711 * documentation does not specify which byte-ordering is to be used
712 * when the file is written.
714 * Re-wrote nsig.c and beefed up nsig.h. Now, there is an
715 * interface to read an entire nsig sweep. You can loop through
716 * the returned sweep and pick your values, and load RSL.
717 * This re-write was done to make reading version 2 files easier.
718 * Additionally, all NSIG code for version 1 and version 2 files
719 * is centrally located in:
723 * To have both versions supported in the same files, I use #ifdef
724 * and the C preprocessor. 'nsig.h' is saturated with #ifdef NSIG_VER2
725 * constructs. Thus, only one source is maintained for both NSIG versions.
727 * 11. Added RSL_print_version();
728 * 12. Added docs for users guide, hdf.
729 * 13. Added html 'grouping by functionality' page.
730 * 14. Restores stdin and stdout when creating pipes.
731 * The pipe readers need to loop until no data available, because
732 * 'read/fread' will not get all the data in one call.
733 * 15. Added moving platform headers to Ray structure:
734 * float pitch; Pitch angle.
735 * float roll; Roll angle.
736 * float heading; Heading.
737 * float pitch_rate; (angle/sec)
738 * float roll_rate; (angle/sec)
739 * float heading_rate; (angle/sec)
740 * float lat; Latitude (degrees)
741 * float lon; Longitude (degrees)
742 * int alt; Altitude (m)
743 * int rvc; Radial velocity correction (units of velocity)
745 * This information typically comes from NSIG. For other formats
746 * the values are all zero.
747 * 16. Read version 1.3 and 1.4 of LASSEN data. RSL_lassen_to_radar.
748 * This means that RSL can read MCTEX data.
749 * 17. Users manual. Walk a novice through a simple example and explain
750 * what header information is important. Teach how to take advantage
752 * 18. Eliminated the #ifeq in makefile. Thus, rsl.h.template is removed
753 * and rsl.h is resurrected.
754 *----------------------------------------------------------------------
755 * v0.45 Began 03/26/96. Froze: 03/27/96 (Severity: minor)
757 * 1. Fixed broken pipe problem on HP and SGI. Cause unknown.
758 * All I did was to remove the pclose in any_format_to_radar.c
759 * It seems that if there is any data left in the pipe that a
760 * SIGPIPE is sent when trying to close the pipe.
761 * On SGI's this causes a core dump. This bug is difficult to
763 * 2. Nsig ingest is severly broken. It always was. Work in
765 * 3. It is important that TSDIS get this version to run on their SGI
766 * as it prevents a core dump. Normally, this shouldn't affect
768 *----------------------------------------------------------------------
769 * v0.44 Began 03/19/96. Froze: 03/19/96.
771 * 1. In prune.c, pointers that are pruned are now set to NULL.
772 * This elimated core dumps associated with trying to free structues.
773 * 2. On gzip-ed UF output, stdout is flushed before the pipe is opened.
774 * 3. Added reverse.c -- Reverse the order of the sweep pointers in
776 *----------------------------------------------------------------------
777 * v0.43 Began 03/01/96. Froze: 03/05/96.
779 * 1. farea.c -- nbins fix.
780 * 2. On UF output, checks for NOECHO.
782 *----------------------------------------------------------------------
783 * v0.42 Began 11/27/95. Froze: 02/16/96.
785 * 1. Removed '#include <strings.h>'.
786 * 2. Added a couple of missing prototypes in rsl.h.template.
788 * Ray *RSL_prune_ray (Ray *ray);
789 * Sweep *RSL_prune_sweep (Sweep *s);
790 * Volume *RSL_prune_volume(Volume *v);
791 * Radar *RSL_prune_radar (Radar *r);
793 * These routine remove dataless substructures. Prompted by
794 * poor NCAR ingest routines for UF files; it is wise to prune
795 * a Radar prior to calling RSL_radar_to_uf. Therefore, if
796 * software cannot read the UF files created by RSL, then try these
797 * prune functions before outputting the UF file. In either case,
798 * RSL_radar_to_uf produces valid UF files.
799 * 4. Removed trigraph in mcgill.c.
800 * 5. Fixed lassen ingest problem on Linux. I think XDR has a bug
801 * where bit fields are not loaded properly. This is a kludge fix.
802 * 6. Removed column.c. Code not mature and takes way too much
803 * RAM. Included in the removal are the vertical structure routines.
804 * The code has been moved to the application (qcwin).
805 * 7. RSL_get_first_ray_of_sweep now returns when the ray number is 1 or
806 * 0. This drasitically speeds the routine.
807 * 8. Increased the UF buffer size from 4096 to 16384.
808 *----------------------------------------------------------------------
809 * v0.41 Began 11/01/95. Froze: 11/20/95.
811 * 1. Minor doc changes. More up to date with implementation.
812 * 2. Implemented 'radar_type' in the radar_header structure. Values
813 * are strings and are: "wsr88d", "lassen", "uf", "nsig", "mcgill",
814 * "kwajalein", "toga".
815 * 3. Increased range of data (internal storage conversion functions)
816 * when using 2 byte storage. Some nsig data can have values below the
817 * default wsr88d function range.
818 * 4. 'farea.c' -- Volumes are used to compute the fractional area.
819 * This matches the latest specification of the function.
820 * 5. Automatically uncompress files. Transparently sets up
821 * a decompression pipe. If the input is not stdin, then 'anyformat_to...'
822 * can peek inside a compressed file and determine what ingest routine to
823 * use. Reading copmressed files from disk and internally uncompressing
824 * them turns out to be the fastest form of ingesting wsr88d (only format
825 * timed) data on my 486. However, I get mixed results on the HP 755.
826 * 'anyformat_to...' uses 'gunzip' to peek inside compressed files.
827 * 6. Can make gzip-ed UF files. The new routine is 'RSL_radar_to_uf_gzip'.
828 * Also, RSL_radar_to_uf_fp takes a file pointer. Thus, you can
829 * define your own output filter.
830 * 7. Added RSL_write_radar_fp, RSL_write_radar_gzip.
831 *----------------------------------------------------------------------
832 * v0.40 Began 10/24/95. Froze: 10/24/95.
834 * 1. Type cast for Sweep_header and Ray_header was removed so that
835 * stock 'cc' on SGI could digest the code. File: column.c. Why?
837 * Version 0.39 was short lived. :-)
838 *----------------------------------------------------------------------
839 * v0.39 Began 7/1/95. Froze: 10/24/95.
841 * 1. Mcgill library is not separate. Included in rsl in whole.
842 * 2. Interpolation routines added.
843 * 3. Added RSL_load_height_color_table -- and the colors/*height.clr
844 * 4. Added RSL_load_rainfall_color_table -- and the colors/*rainfall.clr
845 * 5. Removed RSL_print_{volume,sweep,ray}
846 * 6. Removed some unused routines.
847 * 7. Vertical_structure is its own type composed of Vertical_sweeps and
848 * Vertical_rays (columns).
849 * 8. Added doc/internal_routines.html.
850 * 9. UF is exchangable between big and little endian. Finally, this
851 * has been fixed. Now UF can be generated on little endian machines
852 * and read on big endian (the UF generated is in big endian format even
853 * on the little endian machine). And, visa versa.
854 *10. New version of RSL_get_vertical_structure in column.c. Doc's updated.
855 *11. Fixed bug in radar_to_uf. When the number of actual sweeps (and perhaps
856 * volumes) is less than the determined max of the entire radar structure,
857 * then the pointers may be erroneous. Paul caught this flounder.
858 *12. Added RSL_uf_to_radar_fp. The FILE *fp version of the UF ingest.
859 * Also, passing NULL to RSL_uf_to_radar means to read from stdin.
860 *13. Added NOECHO flag for f and invf. Currently, defined for UF, NSIG and
862 *14. Included source for libraries: wsr88d, lassen, tg, nsig, mcgill,
863 * and kwajlein. Now linking needs only: -lrsl -lm
864 *15. Simplified the configuration procedure. All configuration
865 * is specified from 'makefile'. See README for new install instructions.
866 *16. Removed ray_status, sec_num, atm_att, min_dif, sys_cal from ray
867 * header. These are not used and specific for wsr88d.
868 *17. Summary of routine that handle NULL filenames as STDIN.
869 * RSL_wsr88d_to_radar
870 * RSL_uf_to_radar -- calls --> RSL_uf_to_radar_fp
871 * RSL_lassen_to_radar
874 * RSL_mcgill_to_radar
875 *18. Removed RSL_get_sweep_index_from_volume.
876 *19. Removed RSL_X_ray_indexes. Actually, just renamed the routine
877 * to 'construct_sweep_hash_table'. The hash table retains the hi and
878 * low ray pointers for closest ray comparison. Angle diff's removed.
879 *20. Removed hash table implementation in the Sweep structure. It
880 * is now implemented internally in RSL.
881 *21. BADVAL valued depends on Range type. Picked to be out of range.
883 *----------------------------------------------------------------------
884 * v0.38 Began 6/1/95. Froze 6/29/95.
886 * 1. Makes 2's compliment, instead of 1's compliment, in sweep_to_cart.
887 * 2. Modifications to eth functions.
888 * 3. Added routine RSL_get_column. See column.c.
889 * 4. Added Column data structure.
890 * 5. Static pointer for image generation. Free up image pointer and
891 * reallocate. Otherwise, we've got a memory leak when making many
893 * 6. Added Paul's and Dennis's modifications of the cappi routines.
894 * I modified the cappi structure so that Sweep is a substructure.
895 * This makes image generation and get_value_from_cappi easy to implement.
896 * 7. Added a test program in examples/cappi_image.c to test cappi
898 * 8. Change doc/ for the cappi routines. Routines added/modified are:
899 * float RSL_get_value_from_cappi(Cappi *cappi, float rng, float azm);
900 * int RSL_fill_cappi(Volume *v, Cappi *cap, int method);
901 * void RSL_free_cappi(Cappi *c);
902 * Cappi *RSL_new_cappi(Sweep *sweep, float height);
903 * Cappi *RSL_cappi_at_h(Volume *v, float height, float max_range);
904 * Carpi *RSL_cappi_to_carpi(Cappi *cappi, float dx, float dy,
905 * 9. Carpi structure modified to be compatable with cappi routines.
906 * 10. Added RSL_get_gr_slantr_h. -> range.c
907 * 11. RSL_uf_to_radar only recognizes UF files.
908 * 12. RSL_uf_to_radar handles TRUE UF, 2 and 4 byte record length delimeters.
909 * 13. Minor bug fix in ray_indexes.c to handle RHI input. The number of
910 * hash table entries is now a function of the beam_width and not the
912 * 14. Bug fix in rebin_velocity_sweep. New velocity color tables.
913 * 'examples/qlook.c' added. Yet another image generation program;
915 * 15. RSL_uf_to_radar allocated additional space for sweeps, when the
916 * initial allocation is not enough.
917 * 16. Added a programmers guide. See programmers_guide.html.
918 * 17. Get_closest routines removed.
919 * 18. Added RSL_kwaj_to_radar. -- Mike Kolander.
920 * 19. Added docs for RSL_kwaj_to_radar.
922 * Note: Since v0.37 we've been using h.f and h.invf for the storage
923 * functions and, thus, the library is not compatable with earlier
924 * versions. All subsequent version are, however, compatable.
925 * This means, code that used v0.36 and earlier will break (not
926 * even link) with v0.37 or later.
929 * ray->h.f(ray->range[i]) instead of F(ray->range[i])
931 * ray->h.invf(x) instead of INVF(x).
933 *----------------------------------------------------------------------
934 * v0.37 Began 5/24/95. Froze 5/29/95.
936 * 1. Removed RSL_float_to_char; too specific.
937 * 2. Implemented seperate conversion functions for each field type.
938 * This added h.f and h.invf to Volume, Sweep and Ray headers.
939 * The ingest routines optionally define there own conversion function.
940 * Most of the time, though, I use the default: wsr88d conversions.
941 * Tested: wsr88d, lassen, mcgill, UF, rsl.
942 * Coded but not tested: toga, nsig.
943 * 3. Added ETH routines:
944 * Sweep *RSL_get_eth_sweep(Volume *v,float et_point);
945 * float RSL_get_echo_top_height(Volume *v,float azim,float grange, float et_point);
946 * 4. If using #define USE_TWO_BYTE_PRECISION, uses 100 as a storage
947 * factor. Now, there is no loss of precision when converting between
948 * internal and float. Before there was just a minor round off when
949 * using any data that used anything other than 1/2 dbz precision.
950 * Using 100 is more than enough.
951 *----------------------------------------------------------------------
952 * v0.36 Began 5/19/95. Froze 5/19/95.
954 * 1. Magic in anyformat_to_radar was slightly different than expected
955 * for lassen data. Tested on lassen data.
956 * 2. DEFAULT is to use 2 byte storage precision. See rsl.h.
957 * 3. Several changes to get_closest routines -- Flanigan.
959 *----------------------------------------------------------------------
960 * v0.35 Began 5/18/95. Froze 5/18/95.
962 * 1. Checks iazim validity in ray_indexes.c. Bad angles use to cause
964 * 2. wsr88d_to_radar can handle bogus filenames and callid's.
966 *----------------------------------------------------------------------
967 * v0.34 Began 5/17/95. Froze 5/18/95.
969 * 1. Modified the bscan interface.
971 * 2. Fixed a minor nrays bookkeeping bug in radar_to_uf.
973 * 3. Updated Sweep searching routines.
975 * 4. Added get_closest and get_next_closest ray searching routines.
976 * Updated RSL_get_ray_from_sweep so that it uses the
977 * new_get_closest function.
979 *----------------------------------------------------------------------
980 * v0.33 Began 5/12/95. Froze 5/16/95.
982 * 1. Configure for building using 2 byte precision instead of 1 byte.
983 * This should quell any accuracy problems associated with the
984 * functions F and INVF.
986 * 2. Added 'RSL_mcgill_to_radar'. Link with -lmcgill.
988 * 3. Bug fix in cube.c, cappi.c, and carpi.c.
989 *----------------------------------------------------------------------
991 * v0.32 Began 5/5/95. Froze 5/12/95.
993 * 1. Compiles with -Wall -ansi -pedantic.
994 * 2. Minor bug fixes in get_win.c
995 * 3. Compiles on SGI, 486, SUN, HP using gcc or stock cc.
996 *----------------------------------------------------------------------
997 * v0.31 Began 4/28/95. Froze 5/5/95.
999 * 1. Added ray_high and ray_low Azimuth_hash pointers
1000 * to Azimuth_hash data structure and code in the
1001 * the routine RSL_sweep_ray_indexes to set these
1002 * pointers. ray_low points to the Azimuth_hash
1003 * with the next lowest ray_angle, with ray_high
1004 * points to the next highest.
1006 * 2. Created internal routine dir_angle_diff. Returns
1007 * negitive difference if the second angle in
1008 * the parameter list is counter-clockwise to the
1009 * first angle. Returns positive is second
1010 * angle is clockwise tk first angle.
1012 * 3. Added internal routine the_closest_hash. This
1013 * routine returns the an Azimuth_hash
1014 * data structure that contains the closest
1015 * ray to the requested angle.
1017 * 4. Added two routines: RSL_get_closest_ray_from_sweep and
1018 * RSL_get_next_closest_ray_from_sweep.
1020 * 5. Added routines: RSL_get_window_from_radar,
1021 * RSL_get_window_from_volume, RSL_get_window_from_sweep, and
1022 * RSL_get_window_from_ray.
1024 * 6. Modified farea.c.
1025 * 7. Isolated contruction of azimuth table linked list.
1026 * 8. Fixed get_sweep NULL sweep reference (See patch v0_29_3 also).
1027 * 9. Compiles on HP CC, SGI CC, GNU CC. I had to #ifdef the
1028 * varargs declaration in anyformat_to_radar.c. Why?
1029 * 10. Added examples/killer_sweep.c. This randomizes the azimuth
1030 * values of each ray. The output checks the sortedness of the
1031 * hi and low links in the hash table.
1032 * 11. Added doc/...closest... doc/...next_closest...
1034 *-------------------------------------------------------------------------
1035 * v0.30 Began 4/20/95. Froze 4/27/95
1037 * 0. IMPORTANT: Renamed libradar.a to librsl.a. Also, radar.h to rsl.h.
1038 * 1. Removed NOTFOUND_H reference in the get_ray function.
1039 * 2. Simplified get_sweep.
1040 * 3. Uses within 1/2 beam_width test in get_ray_from_sweep.
1041 * 4. Checks -1 and +1 bin in azimuth hash table to really find the
1042 * closest ray that is within 1/2 beam_width of the target azim.
1043 * Surprisingly, it shortened the get_value_from_sweep routine.
1045 * 5. Added anyformat_to_radar.c. Uses magic information to determine
1046 * the file format. Handles: UF, RSL, WSR88D, LASSEN. Toga may
1047 * be difficult. Unknown, yet, for NSIG. Alan will get me that
1049 * 6. Added beam_width to the ray structure.
1050 *-------------------------------------------------------------------------
1051 * v0.29.1 Began 4/18/95. Froze 4/18/95.
1053 * 1. Bug fix in endian.c. Needed to initialize the word.val to 0.
1054 * 2. Bug fix in radar_to_uf.c. little_endian() call.
1055 * 3. Added Azumuth_hash to structure list in doc/.
1056 * 4. Other minor changes.
1057 *-------------------------------------------------------------------------
1058 * v0.29 Began 3/1/94. Froze ??/??/??
1060 * 0. Thanks to Dennis Flanigan for helping with this release.
1062 * 1. Modified sort_rays.c. By Dennis Flanigan, Jr.
1063 * a. Added h.sorted_flag to Volume and Sweep header structures.
1065 * b. Added routines:
1066 * int ray_sort_compare_by_time(Ray **r1,Ray **r2);
1067 * int sweep_sort_compare(Sweep **s1, Sweep **s2)
1068 * Sweep *RSL_sort_rays_by_time(Sweep *s);
1069 * Volume *RSL_sort_sweeps_in_volume(Volume *v)
1070 * Volume *RSL_sort_volume(Volume *v)
1071 * Radar *RSL_sort_radar(Radar *r)
1073 * c. Routines that sort data structures now set the
1074 * number of structures in the parent data structure.
1076 * d. Fixed: nsweeps was not being set correctly by
1077 * RSL_sort_sweeps_in_volume.
1079 * 2. Removed sort calls in the ingest routines: (whatever)_to_radar.
1081 * 3. Removed the auxillary trig tables in image_gen.c. It's just a
1084 * 4. Changed the extension of the tar archives to .tgz. This
1085 * allows netscape to ftp the file rather than displaying it :-)
1087 * 5. Added variables in the sweep data structures to represent
1088 * the half of the beam width angles. These variables are
1089 * vert_half_bw and horz_half_bw. Also added code to all
1090 * RSL ingest routines (something_to_radar) to set these values.
1091 * The half angle values are used in the volume.c searching routines.
1093 * 6. Added h.indexes to Sweep structure. This is a simple hash
1094 * table for making azimuth lookup cake. So far, I've only
1095 * got the malloc part placed in the routines that create the
1096 * radar structure. Added the file 'ray_indexes.c'. This changes
1097 * RSL_get_value_from_ray.
1104 * RSL_sort..??? really???
1106 * RSL_{write,read}_radar
1110 * RSL_sweep_struct.html
1114 * 8. Added CHECK_LIST.
1116 * 9. Changed the name from radar-v0.?? to rsl-v0.??.
1119 *-------------------------------------------------------------------------
1120 * v0.28 Began 7/23/94. Froze 2/16/95
1123 * 1. Support for little endian machines (*86 PC's using Linux).
1124 * Includes 'endian.c' in 'uf_to_radar.c' and 'radar_to_uf'. It is not
1125 * needed in 'lassen.c' because that program uses xdr to transfer the
1126 * data. Nor is it required in 'wsr88d_to_radar.c', 'nsig_to_radar.c'
1127 * nor 'toga_to_radar.c' because the support for little endian is in
1128 * the respective libraries: libwsr88d.a, libnsig.a, libtg.a.
1136 * In order to make this library compatable with versions on either
1137 * big endian or little endian machines, it will be adopted that all
1138 * output will be in big endian format. Little endian machines will
1139 * have to do the extra work of swapping bytes upon input as well as
1140 * swapping bytes on output. I could adopt to use the xdr library,
1141 * however, it seems too complicated for the simple task of always
1142 * guarenteeing that the output is in big endian format. After all,
1143 * we only support one output format: UF. (Well, we will make our own
1144 * radar format output in big endian format too, but we keep that
1145 * knowledge hush hush).
1147 * 2. Documentation in the seperate directory complete for all routines
1148 * in the RSL. Documentation froze at v0.27 and is in HTML format.
1149 * The documentation version number will be updated to match the version
1150 * number of the most current release of RSL. Note: The live link is
1151 * in /PUBLIC/httpd/htdocs/trmm_office/software/radar/quick_reference.
1152 * It is a symbolic link to ~/proj/trmm/radar/doc/v0.xx.
1154 * 3. Added RSL_ prefix to all documentation. This renamed the HTML files
1155 * to begin with RSL_, also.
1157 * 4. Prefixed all routines with RSL_. Status is that it builds.
1158 * 5. Combined radar.h, cube.h and volume.h into radar.h.
1160 *-------------------------------------------------------------------------
1161 * v0.27 Began 7/23/94. Froze 9/13/94.
1164 * 1. Beam width calculation in get_value_from_sweep is not 1/2 on either
1165 * side. No provision for best fit. See WTD #2.
1166 * 2. Added sort_rays.c. Sort rays in a sweeps and volumes.
1167 * 3. Added Vset_earth_radius. Set global variable 'Re' (Default: 4/3R).
1168 * 4. Added trig modification of get_slantr_and_h.
1169 * 5. Added sort rays call to: toga_to_radar, wsr88d_to_radar,
1170 * uf_to_radar, lassen_to_radar.
1171 * 6. Added cube.c. By Mike Kolander.
1173 * 8. Added toga_to_radar.c. By Mike Kolander.
1174 * 9. Signed all source files.
1175 * 10. Quieted some image print statements. See image_gen.c.
1176 * 11. Changed wsr88d_to_radar so it takes 'first_file' or the 4 character
1177 * call sign (eg. KMLB).
1178 * 12. Fixed makefile so it removes libradar.a before building. This prevents
1179 * duplicate object files, only the long filenamed ones, from
1180 * appearing in the archive file.
1181 * 13. Added gts.c. By Dave Wolff.
1182 * 14. Fixed minor round off error in 'uf_to_radar' which caused a 0 dBZ spike.
1183 * 15. Added histogram.c. By Dave Wolff.
1184 * 16. Added nsig_to_radar.c. By Alan McConnell.
1189 * 2. Vget_value_from_sweep. When the beam width is increased we
1190 * want to return the value that is the best fit for a ray and not
1191 * just the first fit. Currently when the beam width is really
1192 * large then we will pick the wrong beam for the desired point.
1194 * 3. Add the following to the ray header:
1196 * - offset for azim, range, elev (for moving radar)
1197 * - lat/lon (for moving radar)
1199 * 4. Bilinear interpolation.
1200 * 6. Modify get_ray_above to return a good ray so that QC doesn't zap points
1202 * 7. Optimize/Improve the get_value routine.
1203 * 8. Remove V prefix to routine names?
1204 * 10. Fix why there are bands of missing data when making images.
1205 * 11. Specify resolution when making images.
1206 * 14. Update: doc's (in HTML), README, etc.
1207 * 16. NEED *TESTING* suite of programs.
1209 * Proposed changes for v0.28
1210 * 1. Add support for little endian machines (386, 486, etc.)
1211 * 2. F(x, DZ) or ray->f.dz(x). I.e., object function conversion functions.
1214 *-------------------------------------------------------------------------
1215 * v0.26 Began 7/23/94.
1217 * 1. Adding cappi_to_carpi.
1218 * 2. Enhanced the Cappi structure; not the same as a sweep anymore.
1220 *-------------------------------------------------------------------------
1221 * v0.26 Began 7/13/94. Froze 7/20/93.
1223 * 1. Units for wavelength, in radar_to_uf, changed from meters to cm;
1224 * as they should be.
1225 * 2. Library runs quietly. No noisy print statements. Call
1226 * radar_verbose_on() and radar_verbose_off() to control printing.
1227 *-------------------------------------------------------------------------
1228 * v0.25 Began 7/1/94. Froze 7/1/94
1230 * 1. Modifications to makefile to add portibility to building on
1231 * other systems w/o gcc. Change to CFLAGS.
1233 * 3. Moved documents radar.ez and volume.ez to ../doc (../doc_RCS).
1234 * This means that the version of the documentation will not be kept
1235 * up to the version of the RSL library. Only changes to the doc. will
1236 * force a new version of the documentation. I'll want to see if this
1238 *-------------------------------------------------------------------------
1239 * v0.24 Began 6/29/94. Froze 6/29/94
1241 * 1. radar_to_uf, uf_to_radar. Fixed inconsistant use of BADVAL vs.
1242 * UF_NO_DATA. The latter is check and used.
1243 * 2. Added function:
1244 * float get_nyquist_from_radar(Radar *radar);
1245 * Useful, for loading non-velocity fields with PRF, PRT and NYQUIST.
1246 * 3. Made the makefile more general and added comments.
1249 * 1. Modify wsr88d_to_radar to fill PRF, PRT and NYQUIST values in
1250 * non-velocity rays.
1251 *-------------------------------------------------------------------------
1252 * v0.23 Began 6/27/94. Froze 6/27/94
1254 * 1. First distribution release.
1255 * 2. Added README w/ installation instructions.
1256 * 3. Made example_main and colors directories.
1257 * 4. Shortened lassen.h to be close to minimial.
1258 * 5. Modified makefile to only make libradar.a. Example_main/ has it's
1260 *-------------------------------------------------------------------------
1261 * v0.22 Began 6/24/94. Froze 6/24/94
1263 * 1. radar_to_uf/uf_to_radar PRF/PRT calculation corrected.
1265 *-------------------------------------------------------------------------
1266 * v0.21 Began 6/24/94. Froze 6/24/94
1268 * 1. radar_to_uf: prf now in microseconds.
1269 * 2. uf_to_radar: prf now converted from microseconds to seconds.
1271 *-------------------------------------------------------------------------
1274 * Need to determine the changes.
1275 *-------------------------------------------------------------------------
1276 * v0.19 Began 6/17/94. Froze: 6/17/94.
1278 * 1. Fixed NULL access in write_radar subroutine.
1280 *-------------------------------------------------------------------------
1281 * v0.19 Began 6/15/94. Froze: 6/15/94.
1283 * 1. Check for NULL in Vget_ray_from_sweep fixes a segmentation fault on
1285 *-------------------------------------------------------------------------
1286 * v0.18 Began 6/11/94. Froze: 6/12/94 2pm.
1288 * 1. Minor changes in volume.c. Vget_value_from_sweep now uses the
1289 * beam_width for matching rays. See Vget_sweep too.
1290 * 2. cappi.c sets the beam_width.
1291 * 3. Added radar types. There is no sure fire way to set
1292 * radar->h.radar_type to one of these values automatically, ie. from
1293 * information in the input file. It may have to be done by the
1294 * application; a runtime parameter, option.
1296 * TOGACOARE_TOGA_SIGMET
1297 * TOGACOARE_MIT_SIGMET
1298 * TRMM_DARWIN_LASSEN
1299 * DARWIN_TOGA_SIGMET
1300 * TRMM_MELBOURNE_WSR88D
1301 * TRMM_KWAJALEIN_SIGMET
1302 * TRMM_HOUSTON_WSR88D
1303 * 4. Added function:
1304 * Sweep *Vget_first_sweep_of_volume(Volume *v);
1305 * 5. Placed the wsr88d code in wsr88d_to_radar.c (removed from radar.c).
1308 * 1. Rework Vget_value_from_sweep to do a better search for the value.
1310 *-------------------------------------------------------------------------
1311 * v0.17 Began 6/10/94. Froze 6/10/94 3:30pm.
1313 * 1. Corrected the pulse width calculation in uf_to_radar and in
1315 *-------------------------------------------------------------------------
1316 * v0.16 Began 6/10/94. Froze 6/10/94 12:30pm.
1318 * 1. Minor changes to radar.c because v1.3 of the wsr88d library is
1319 * now using WSR88D_DZ, WSR88D_VR, WSR88D_SW as the field type mask.
1320 * REFLECTIVITY, VELOCITY and SPECTRUM_WIDTH are not used.
1322 *-------------------------------------------------------------------------
1323 * v0.15 Began 6/7/94. Froze 6/7/94 1pm.
1325 * 1. Discovered that the range to bin1 calculation in radar_to_uf.c and
1326 * uf_to_radar.c was incorrect. See fh[2] and fh[3].
1328 *-------------------------------------------------------------------------
1329 * v0.14 Began 6/2/94. Froze 6/2/94 1pm.
1331 * 1. Modified the date for the Radar structure for UF reading to reflect
1332 * the time of the first ray. It was the generation time of the radar
1333 * structure, however, Dave Wolff insists that it reflect the time of
1334 * the first ray. Modification to 'uf_to_radar.c'
1336 *-------------------------------------------------------------------------
1337 * v0.13 Began 6/2/94. Froze 6/2/94 11am.
1339 * 1. Modified radar_to_uf.c to undo the faking of the headers. This is
1342 *-------------------------------------------------------------------------
1343 * v0.12 Began 5/31/94. Froze 5/31/94 7pm.
1345 * 1. Check for malloc errors in Vnew* routines.
1346 * 2. Fixed a nasty bug in radar_to_uf. I was letting 'j' get to high
1347 * for a particular ray in a sweep. 'j' is looping on the maximum
1348 * rays possible. I noticed this bug only after Vcopy_volume to
1349 * replace a radar->v[i].
1350 *-------------------------------------------------------------------------
1351 * v0.11 Began 5/27/94. Froze 5/27/94 12:50pm.
1353 * 1. Modified radar_to_uf.c to fake header information when fields do
1354 * exist, eventually, but not in the current sweep. This is to allow
1355 * brain dead UF ingestors (Zeb, RDSS, etc.) to read the UF file; they
1356 * assume that whatever fields exist in the first UF sweep is constant
1357 * throughout the file.
1359 * 2. Added functions to volume.c
1360 * Ray *Vget_first_ray_of_sweep(Sweep *s);
1361 * Ray *Vget_first_ray_of_volume(Volume *v);
1363 *-------------------------------------------------------------------------
1364 * v0.10 Began 5/26/94. Froze 5/27/94 9am.
1366 * 1. Modified the names of the INDEX and MASK variables.
1368 * ZT Total Reflectivity (dBZ) ZT_INDEX
1369 * May be uncommon, but important
1371 * DZ Reflectivity (dBZ), may contain some DZ_INDEX
1372 * signal-processor level QC and/or
1373 * filters. This field would contain
1374 * Darwin's CZ, or WSR88D's standard
1375 * reflectivity. In other words, unless
1376 * the field is described otherwise, it
1377 * should always go here. In essence, this
1378 * is the "cleanest" reflectivity field
1381 * DR Differential reflectivity DR_INDEX
1382 * DR and LR are for dual-polarization
1383 * radars only. Unitless or in dB.
1385 * LR Another form of differential ref LR_INDEX
1386 * called LDR, not sure of units
1388 * CZ QC Reflectivity (dBZ), contains
1389 * post-processed QC'd data CZ_INDEX
1391 * VR Radial Velocity (m/s) VR_INDEX
1393 * SW Spectral Width (m2/s2) SW_INDEX
1395 * 2. Fixed some MAX_RADAR_VOLUMES references in the wsr88d_to_radar code.
1397 *-------------------------------------------------------------------------
1398 * v0.9 Began 5/25/94. Froze: 5/26/94, 10am.
1400 * 1. Added lassen_to_radar.c
1403 *-------------------------------------------------------------------------
1404 * v0.8 Began 5/23/94. Froze: 5/24/94, 10am.
1406 * 1. F and INVF handle APFLAG.
1407 * 2. Image generation creates unsigned char images.
1408 * 3. 255-val for negative dBz (val < 0).
1410 *-------------------------------------------------------------------------
1411 * v0.7 Began 4/30/94. Froze: 5/20/94.
1415 * 1. Uses char storage for data values, to reduce RAM allocation.
1417 * 2. F(x) ((x-2)/2. - 64.)
1418 * 0 is for BADVAL. Bad value.
1419 * 1 is for RFVAL. Range folded.
1421 * 3. Added functions:
1422 * Vfloat_to_char(float *x, unsigned char *c, int n);
1423 * float F(unsigned char c);
1424 * unsigned char INVF(float x); -- Inverse of F.
1425 * Radar *uf_to_radar(char *infile);
1426 * void radar_to_uf(Radar *radar, char *outfile);
1428 * 4. Minor bug fix in wsr88d_to_radar routine. It was setting the
1429 * number of volumes to six even though we were only asking for 3.
1431 * 5. Changed the value of BADVAL to 0500 (Octal 500). This is
1432 * a value higher than 255 (the maximum byte value) but small enough
1433 * to that when a scale factor (typically 100) is applied, the result
1434 * does not exceed the I*2 (short) magnitude. I needed this for the
1435 * UF programs. I could have tested for BADVAL, RFVAL, etc., and not
1436 * applied a scale factor when loading the UF buffer, however, changing
1437 * BADVAL and scaling everything was more general.
1439 * 6. Made some slight modifications to the Radar header and Volume header.
1441 *-------------------------------------------------------------------------
1442 * v0.6 Began 4/16/94. Froze: 4/30/94.
1446 * 1. Azimuth angles range from -180,180 to 0,360.
1447 * 2. New color index binning function for velocity. -nyquist,nyquist
1448 * using 15 bin values. See Vrebin_velocity_sweep.
1449 * 3. Added the following routines:
1451 * Memory management.
1452 * Ray *Vcopy_ray(Ray *r);
1453 * Sweep *Vcopy_sweep(Sweep *s);
1454 * Volume *Vcopy_volume(Volume *v);
1455 * Radar *clear_radar(Radar *r);
1456 * void Vget_groundr_and_h(float slant_r, float elev, float *gr, float *h);
1457 * void Vget_slantr_and_elev(float gr, float h, float *slant_r, float *elev);
1458 * void Vget_slantr_and_h(float gr, float elev, float *slant_r, float *h);
1460 * Image generation preparation.
1461 * void Vrebin_velocity_ray (Ray *r); /* Modifies r */
1462 * void Vrebin_velocity_sweep (Sweep *s); /* Modifies s */
1463 * void Vrebin_velocity_volume(Volume *v); /* Modifies v */
1465 * Color table functions.
1466 * void load_red_table(char *infile);
1467 * void load_green_table(char *infile);
1468 * void load_blue_table(char *infile);
1470 * 4. Added 4/3Re calculation to Vget_slantr_and_elev and Vget_groundr...
1471 * 5. Checked for null in the Vclear routines.
1473 *-------------------------------------------------------------------------
1478 * 1. Color table functions taken out of the image routines.
1479 * You must call load_refl_table(), load_vel_table(), load_sw_table()
1480 * to load the appropriate color table before making color images.
1481 * There are seperate color tables for R, V, S. See volume.h.
1483 * 2. Range is now used in Vsweep_to_cart.
1484 * 3. Gate size (pixel resolution in km) is now used.
1485 * 4. Added range to cappi_at_h function. It is the effective range.
1486 * 5. Added the following routines:
1488 * Read radar from disk.
1489 * Ray *read_ray (FILE *fp);
1490 * Sweep *read_sweep (FILE *fp);
1491 * Volume *read_volume(FILE *fp);
1492 * Radar *read_radar (char *infile);
1494 * Write radar to disk
1495 * int write_ray (Ray *r, FILE *fp);
1496 * int write_sweep (Sweep *s, FILE *fp);
1497 * int write_volume(Volume *v, FILE *fp);
1498 * int write_radar (Radar *r, char *outfile);
1501 * float Varea_of_ray(Ray *r, float lo, float hi, float range);
1502 * float Vfractional_area_of_sweep(Sweep *s, float lo, float hi, float range);
1505 * Vfraction_of_ray(Ray *r, float lo, float hi, float range);
1506 * Vfraction_of_sweep(Sweep *s, float lo, float hi, float range);
1507 * Vfraction_of_volume(Volume *v, float lo, float hi, float range);
1510 * 6. radar.c calls wsr88d_get_site to get additional wsr88d information
1511 * not included in the file. Routines compliments of Dan Austin.
1512 * 7. Added RFVAL. Range Folded value. Any base data value of 0 is
1513 * data below SNR thresholds set for that specific base data. Any
1514 * data value of 1 is data considered range ambiguous (folded).
1515 * A color table entry needs to be picked to represent this value.
1518 * o I have to do something about MAX_RADAR_VOLUMES. We really should
1519 * rely on radar->h.nvolumes;
1521 * o Add 4/3Rearth calculation to get value routines.
1522 * o Incorporate nsig_to_radar. Dennis Flanigan is writing that interface.
1523 * o Add fraction of area function.
1524 * o Add the following functions: ??? really ???
1525 * Sweep *Vget_closest_sweep(Volume *v, float elev);
1526 * Ray *Vget_closest_ray(Sweep *s, float azim);
1527 * float Vget_closest_value_in_beam(Ray *ray, float range);
1528 * float Vget_closest_value(Ray *ray, float range);
1529 * (I'm not sure how this will be different than Vget_value)
1531 * o Sort the rays so locating azimuth is trivial; instead of a search
1532 * algorithm as it is now. Hey, would a binary search be good enough or
1533 * do we need some hashing function? Is the lookup fast enough already?
1534 * o Add CAPPI at h. (Option for bilinear interpolation about h).
1535 *-------------------------------------------------------------------------
1536 * v0.4 Began 3/23/94 Froze: 4/7/94
1540 * 1. Made Sweep (sweep) and Ray (ray) members an array of pointers.
1541 * This changes the syntax of the access to be
1542 * v->sweep[is]->ray[ir]->range[ibin] instead of
1543 * v.sweep[is].ray[ir].range[ibin]. The benifit of this is to
1544 * be able to dynamically specify the number of sweeps or rays,
1545 * even volumes for the Radar structure, and not allocate a maximum.
1546 * This makes Vnew_sweep and Vnew_ray useful.
1548 * 2. Added the following functions:
1549 * Volume *Vget_volume(Radar *r, int itype);
1550 * itype = REFLECTIVITY, VELOCITY, or SPECTRUM_WIDTH, etc.
1552 * Sweep *Vget_sweep(Volume *v, float theta);
1553 * Ray *Vget_ray (Volume *v, float theta, float azimuth);
1554 * float Vget_value(Volume *v, float theta, float azimuth, float range);
1555 * Ray *Vget_ray_from_sweep(Sweep *s, float azimuth, float range);
1556 * float Vget_value_from_sweep(Sweep *s, float azimuth, float range);
1557 * float Vget_value_from_ray(Ray *r, float range);
1558 * float Vget_value_at_h(Volume *v, float azim, float grnd_r, float h);
1560 * Ray *QC_ray (Ray *ray, int radar_type);
1561 * Sweep *QC_sweep (Sweep *sweep, int radar_type);
1562 * Volume *QC_volume(Volume *volume, int radar_type);
1564 * Radar *QC_radar (Radar *radar);
1566 * void write_gif(char *outfile, char *image, int xdim, int ydim, char c_table[256][3]);
1567 * void write_pict(char *outfile, char *image, int xdim, int ydim, char c_table[256][3]);
1568 * char *Vsweep_to_cart(Sweep *s, int xdim, int ydim, float range);
1569 * void Vsweep_to_gif(Sweep *s, char *outfile, int xdim, int ydim, float range);
1570 * void Vsweep_to_pict(Sweep *s, char *outfile, int xdim, int ydim, float range);
1571 * void Vvolume_to_gif(Volume *v, char *basename, int xdim, int ydim, float range);
1572 * char *Vsweep_to_cart(
1573 * 3. When a sweep does not have any rays with any bins, then NULL is
1574 * assigned to that Sweep pointer. This occurs for reflectivity for
1575 * the 2-nd sweep index (as defined by the data) where the is no
1576 * reflectivity data, only doppler and spectrum width. Velocity and
1577 * spectrum width data do not exist for sweep number 1 (index 0).
1579 * 4. Speed ups in Vto_cart_sweep. Math is precomputed and saved in
1580 * arrays for faster lookup. Still the ppmtogif is a snail and it
1581 * overwhelms the runtime. I only saw a 35 second improvment with
1582 * these new arrays when outputting 20 gif images. I think the -O
1583 * compile flag is doing a good job.
1585 * 5. Added CAPPI at h. Routine in cappi.c. Cappi type is syntatically
1586 * identical to the Sweep type.
1588 * Cappi *cappi_at_h(Volume *v, float h);
1590 * 6. Make builds libradar.a which contains radar.c, volume.c, cappi.c and
1591 * image_gen.c. Builds on SGI, SUN and HP.
1593 * 7. Add QC routines. See 2. above for the list. Currently they are
1594 * place holding functions with only QC_ray needing to be coded.
1595 * Paul Kucera will take care of that.
1597 * 8. Improvments to radar.ez and volume.ez.
1600 * o Add the following functions:
1601 * Sweep *Vget_closest_sweep(Volume *v, float elev);
1602 * Ray *Vget_closest_ray(Sweep *s, float azim);
1603 * float Vget_closest_value_in_beam(Ray *ray, float range);
1604 * float Vget_closest_value(Ray *ray, float range);
1605 * (I'm not sure how this will be different than Vget_value)
1607 * o Add range resolution to the image generation subroutines.
1608 * o Add range resolution to all the 'get_value' routines.
1609 * o Sort the rays so locating azimuth is trivial; instead of a search
1610 * algorithm as it is now. Hey, would a binary search be good enough or
1611 * do we need some hashing function? It the lookup fast enough already?
1612 * o Add CAPPI at h. (Option for bilinear interpolation about h).
1614 *-------------------------------------------------------------------------
1615 * v0.3 Began 3/22/94 Froze 3/23/94.
1618 * 1. Implimented the Radar structure. The heart of it is an array of
1620 * 2. Using 'data_mask' which is a bitwise ( | operator in C ) of
1621 * REFL_MASK, VEL_MASK, or SW_MASK, you can get any field type volume:
1622 * reflectivity, doppler velocity, or spectrum width respectively.
1623 * 3. Load volume, sweep and ray header information.
1624 * 4. Added Radar header information; need a good definition of say date and
1628 * - Improve carteasean image generation.
1629 * Input: radar range, pix_width, pix_height. No distortion.
1630 * - Need to specify the output GIF filename as options.
1631 * - Incorporate Vto_fraction (?? name ??) Dave's new function.
1632 *-------------------------------------------------------------------------
1633 * v0.2 Began 3/21/94 Froze 3/22/94.
1635 * I am freezing this here because both BSCAN and CARTESEAN image generation
1636 * works. You have to hand edit the source to restrict the number of
1637 * Sweeps that are converted to images, currently only sweep 0. The inclusion
1638 * of sweep/ray header information and the collection of doppler and spectrum
1639 * width data requires substantial effort and will be in the next version.
1640 * This version freeze is a check point.
1643 * 1. Name rsphere change to volume.
1644 * 2. File rsphere.c changed to volume.c. (Moved the RCS file rsphere.c,v
1645 * to the graveyard directory in RCS/
1646 * 3. Added color gif support. Reads red.clr, green.clr, blue.clr files.
1647 * This renamed the Vto_cart_pgm function to Vto_cart_gif. It is likely
1648 * that ppm support is not needed. We'll see.
1649 * 4. Fixes minor glitches in output images where the tan is undefined.
1650 * 5. Added BSCAN production as GIF files.
1651 * 6. Output sweep.xx file names; sweep.00.gif, etc. and bscan.00.gif too.
1654 * - Add routines to get volumes for doppler and spectrum width. (Radar lib?)
1655 * - Improve carteasean image generation.
1656 * Input: radar range, pix_width, pix_height. No distortion.
1657 * - Add sweep header information.
1658 * - Need to specify the output GIF filename as options.
1659 * - Incorporate Vto_fraction (?? name ??) Dave's new function.
1661 *-------------------------------------------------------------------------
1662 *v0.1 3/21/94 by John Merritt.
1663 * 1. First development version of the radar and rsphere library.
1664 * Includes test driver. radar.ez and rsphere.ez document the
1665 * functionality of the programs. This version exists to check point
1667 *-------------------------------------------------------------------------