3 This is the TRMM Office Radar Software Library.
4 Copyright (C) 1996 John H. Merritt
5 Space Applications Corporation
6 Vienna, Virginia, a NASA/GSFC on-site contractor.
8 This library is free software; you can redistribute it and/or
9 modify it under the terms of the GNU Library General Public
10 License as published by the Free Software Foundation; either
11 version 2 of the License, or (at your option) any later version.
13 This library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Library General Public License for more details.
18 You should have received a copy of the GNU Library General Public
19 License along with this library; if not, write to the Free
20 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 /* Are we building the library? */
30 /**********************************************************************/
31 /* Configure: Define USE_TWO_BYTE_PRECISION to have RSL store internal*/
32 /* values with two bytes. Otherwise, use one byte. */
33 /* It is a good idea to use two byte precision. */
34 /* See 'makefile' for an additional explaination. */
36 /**********************************************************************/
37 #define USE_TWO_BYTE_PRECISION
40 /**********************************************************************/
41 /* Configure: Define the file name of the red,green, and blue color */
42 /* color tables. This maps reflectance to color. */
43 /* This should be $(LIBDIR)/colors, from the makefile */
44 /* so you shouldn't have to modify anything here. */
45 /**********************************************************************/
47 #define COLORDIR DATADIR "/colors"
50 /* These are the color table indexes. See RSL_set/get_color_table. */
51 #define RSL_RED_TABLE 0
52 #define RSL_GREEN_TABLE 1
53 #define RSL_BLUE_TABLE 2
55 /* The default color tables for reflectivity, velocity, spectral width,
56 * height, rainfall, and zdr.
58 #define REFL_RED_FILE COLORDIR "/red_reflectivity.clr"
59 #define REFL_GREEN_FILE COLORDIR "/grn_reflectivity.clr"
60 #define REFL_BLUE_FILE COLORDIR "/blu_reflectivity.clr"
61 #define VEL_RED_FILE COLORDIR "/red_velocity.clr"
62 #define VEL_GREEN_FILE COLORDIR "/grn_velocity.clr"
63 #define VEL_BLUE_FILE COLORDIR "/blu_velocity.clr"
64 #define SW_RED_FILE COLORDIR "/red_spectral_width.clr"
65 #define SW_GREEN_FILE COLORDIR "/grn_spectral_width.clr"
66 #define SW_BLUE_FILE COLORDIR "/blu_spectral_width.clr"
67 #define HEIGHT_RED_FILE COLORDIR "/red_height.clr"
68 #define HEIGHT_GREEN_FILE COLORDIR "/grn_height.clr"
69 #define HEIGHT_BLUE_FILE COLORDIR "/blu_height.clr"
70 #define RAINFALL_RED_FILE COLORDIR "/red_rainfall.clr"
71 #define RAINFALL_GREEN_FILE COLORDIR "/grn_rainfall.clr"
72 #define RAINFALL_BLUE_FILE COLORDIR "/blu_rainfall.clr"
74 /* Added by D. Wolff 07/31/97 */
75 #define ZDR_RED_FILE COLORDIR "/red_zdr.clr"
76 #define ZDR_GREEN_FILE COLORDIR "/grn_zdr.clr"
77 #define ZDR_BLUE_FILE COLORDIR "/blu_zdr.clr"
79 /*************************************************************************/
80 /* You should not have to change anything below this line.
81 * The rest is my fault.
83 /*************************************************************************/
87 * Magic numbers. These are used to uniquely identify the type of
88 * values present in a particular structure: Volume, Sweep, Ray.
89 * The magic numbers V_DZ, V_VR, V_SW, etc. represent Volume magic
90 * numbers for the field types DZ, VR, SW, etc. Similiar magic numbers
91 * are implimented for Sweep, and Ray. The magic number is the first word
92 * of the data structure. These magic number may determine which conversion
93 * function is used, see volume.c and the end of this file for the
94 * conversion functions. (As of v0.39 -- NOT YET IMPLEMENTED.)
97 V_DZ, V_VR, V_SW, V_CZ, V_ZT, V_DR, V_LR,
98 S_DZ, S_VR, S_SW, S_CZ, S_ZT, S_DR, S_LR,
99 R_DZ, R_VR, R_SW, R_CZ, R_ZT, R_DR, R_LR
102 /* File format types recognized by RSL. */
103 enum File_type {UNKNOWN, WSR88D_FILE, UF_FILE, LASSEN_FILE,
104 TOGA_FILE, NSIG_FILE_V1, NSIG_FILE_V2,
105 RSL_FILE, MCGILL_FILE, HDF_FILE, RAPIC_FILE,
106 RADTEC_FILE, EDGE_FILE, DORADE_FILE, RAINBOW_FILE};
108 /* Pick a BADVAL that is out of range. That is, the range
109 * of the conversion cannot include these reserved values.
110 * Typically, pick a number that cannot be stored in the Range data type.
112 #ifdef USE_TWO_BYTE_PRECISION
113 typedef unsigned short Range;
114 #define BADVAL (float)0x20000
116 typedef unsigned char Range;
117 #define BADVAL (float)0500 /* non-meaningful value (500 octal) */
120 #define RFVAL (BADVAL-1) /* Range folded value. See rfival. */
121 #define APFLAG (BADVAL-2)
122 #define NOTFOUND_H (BADVAL-3)
123 #define NOTFOUND_V (BADVAL-4)
124 #define NOECHO (BADVAL-5) /* For nsig and UF -32, for kwaj -30 */
125 #define RSL_SPEED_OF_LIGHT 299792458.0 /* m/s */
128 int month; /* Time for this ray; month (1-12). */
129 int day; /* Time for this ray; day (1-31). */
130 int year; /* Time for this ray; year (eg. 1993). */
131 int hour; /* Date for this ray; hour (0-23). */
132 int minute;/* Date for this ray; minute (0-59).*/
133 float sec; /* Date for this ray; second + fraction of second. */
134 float unam_rng; /* Unambiguous range. (KM). */
135 float azimuth; /* Azimuth angle (degrees). Must be positive.
136 * 0=North, 90=east, -90/270=west.
137 * This angle is the mean azimuth for the whole ray.
138 * E.g. for NSIG the beginning and end azimuths are averaged.
140 int ray_num; /* Ray no. within elevation scan. */
141 float elev; /* Elevation angle. (degrees). */
142 int elev_num; /* Elevation no. within volume scan. */
144 int range_bin1; /* Range to first gate.(meters) */
145 int gate_size; /* Data gate size (meters)*/
147 float vel_res; /* Doppler velocity resolution */
148 float sweep_rate; /* Sweep rate. Full sweeps/min. */
150 int prf; /* Pulse repetition frequency, in Hz. */
151 int prf2; /* Second PRF, for Sigmet dual PRF */
152 float azim_rate; /* Sweep rate in degrees/sec. */
153 float fix_angle; /* Elevation angle for the sweep. (degrees). */
154 float pitch; /* Pitch angle. */
155 float roll; /* Roll angle. */
156 float heading; /* Heading. */
157 float pitch_rate; /* (angle/sec) */
158 float roll_rate; /* (angle/sec) */
159 float heading_rate; /* (angle/sec) */
160 float lat; /* Latitude (degrees) */
161 float lon; /* Longitude (degrees) */
162 int alt; /* Altitude (m) */
163 float rvc; /* Radial velocity correction (m/sec) */
164 float vel_east; /* Platform velocity to the east (negative for west) (m/sec) */
165 float vel_north; /* Platform velocity to the north (negative south) (m/sec) */
166 float vel_up; /* Platform velocity toward up (negative down) (m/sec) */
167 int pulse_count; /* Pulses used in a single dwell time. */
168 float pulse_width; /* Pulse width (micro-sec). */
169 float beam_width; /* Beamwidth in degrees. */
170 float frequency; /* Carrier freq. GHz. */
171 float wavelength; /* Wavelength. Meters. */
172 float nyq_vel; /* Nyquist velocity. m/s */
173 float (*f)(Range x); /* Data conversion function. f(x). */
174 Range (*invf)(float x); /* Data conversion function. invf(x). */
175 int nbins; /* Number of array elements for 'Range'. */
181 Range *range; /* range[0..nbins-1]
183 * 0..460 for reflectivity, 0..920 for velocity and
189 typedef struct _azimuth_hash {
191 struct _azimuth_hash *next, *ray_high, *ray_low;
195 Azimuth_hash **indexes;
201 int sweep_num; /* Integer sweep number. This may be redundant, since
202 * this will be the same as the Volume.sweep array index.*/
203 float elev; /* Elevation angle (mean) for the sweep. Value is -999 for
205 float azimuth; /* Azimuth for the sweep (RHI). Value is -999 for PPI. */
206 float beam_width; /* This is in the ray header too. */
207 float vert_half_bw; /* Vertical beam width divided by 2 */
208 float horz_half_bw; /* Horizontal beam width divided by 2 */
211 float (*f)(Range x); /* Data conversion function. f(x). */
212 Range (*invf)(float x); /* Data conversion function. invf(x). */
217 Ray **ray; /* ray[0..nrays-1]. */
221 char *type_str; /* One of:'Reflectivity', 'Velocity' or 'Spectrum width' */
223 float calibr_const; /* Calibration constant. HDF specific. */
224 float (*f)(Range x); /* Data conversion function. f(x). */
225 Range (*invf)(float x); /* Data conversion function. invf(x). */
229 Volume_header h; /* Specific info for each elev. */
230 /* Includes resolution: km/bin. */
231 Sweep **sweep; /* sweep[0..nsweeps-1]. */
236 typedef Range Carpi_value;
237 typedef Range Cappi_value;
240 int month; /* (1-12). */
241 int day; /* (1-31). */
242 int year; /* (eg. 1993). */
243 int hour; /* (0-23). */
244 int minute; /* (0-59).*/
245 float sec; /* second + fraction of second. */
246 float dx, dy; /* Size of cell in km. */
247 int nx, ny; /* Number of cells. */
248 int radar_x, radar_y; /* Location of center of radar. */
249 float height; /* Height of this Carpi. */
250 float lat, lon; /* Lat/lon of lower left corner of Carpi. */
251 char radar_type[50]; /* Radar types. */
252 int field_type; /* Same as for Radar. */
253 int interp_method; /* ??? string describing interpolation method. */
254 float (*f)(Carpi_value x); /* Data conversion function. f(x). */
255 Carpi_value (*invf)(float x); /* Data conversion function. invf(x). */
256 Carpi_value **data; /* data[ny][nx] */
259 /** Cappi data structure info **/
260 /* Paul A. Kucera **/
262 /* Element in location array of Cappi data structure.
263 * Each element is elvation and range to data value.
267 float elev; /* elevation angle */
268 float srange; /* slant range !!! */
272 /* Cappi data structure.
275 int month; /* Begin time for this Cappi; month (1-12). */
276 int day; /* Begin time for this Cappi; day (1-31). */
277 int year; /* Begin time for this Cappi; year (eg. 1993). */
278 int hour; /* Begin date for this Cappi; hour (0-23). */
279 int minute; /* Begin date for this Cappi; minute (0-59).*/
280 float sec; /* Begin date for this Cappi; second + frac. of second.*/
281 float height; /* Height for this Cappi in m */
284 int field_type; /* Value of Constant ??_INDEX */
285 char radar_type[50]; /* Value of Constant radar->h.radar_type */
286 int interp_method; /* ??? string describing interpolation method. */
287 Er_loc *loc; /* elevation and range coordinate array */
288 Sweep *sweep; /* Pointers to rays of data */
291 /* The Cube data type. */
293 typedef Range Cube_value;
294 typedef Range Slice_value;
302 Carpi **carpi; /* Pointers to carpi[0] thru carpi[nz-1] */
310 float (*f)(Slice_value x); /* Data conversion function. f(x). */
311 Slice_value (*invf)(float x); /* Data conversion function. invf(x). */
312 Slice_value **data; /* data[ny][nx]. */
324 enum scan_mode {PPI, RHI};
327 int month, day, year;
329 float sec; /* Second plus fractional part. */
330 char radar_type[50]; /* Type of radar. Use for QC-ing the data.
331 * Supported types are:
332 * "wsr88d", "lassen", "uf",
334 * "kwajalein", "rsl", "toga",
335 * "rapic", (rapic is Berrimah Austrailia)
336 * "radtec", (SPANDAR radar at Wallops Is, VA)
340 * Set by appropriate ingest routine.
344 int number; /* arbitrary number of this radar site */
345 char name[8]; /* Nexrad site name */
346 char radar_name[8]; /* Radar name. */
347 char project[24]; /* Project identifier. */
348 char city[15]; /* nearest city to radar site */
349 char state[3]; /* state of radar site */
351 int latd; /* degrees of latitude of site */
352 int latm; /* minutes of latitude of site */
353 int lats; /* seconds of latitude of site */
354 int lond; /* degrees of longitude of site */
355 int lonm; /* minutes of longitude of site */
356 int lons; /* seconds of longitude of site */
357 int height; /* height of site in meters above sea level*/
358 int spulse; /* length of short pulse (ns)*/
359 int lpulse; /* length of long pulse (ns) */
360 int scan_mode; /* 0 = PPI, 1 = RHI */
361 int vcp; /* Volume Coverage Pattern (for WSR-88D only) */
367 Volume **v; /* Array 0..nvolumes-1 of pointers to Volumes.
368 * 0 = DZ_INDEX = reflectivity.
369 * 1 = VR_INDEX = velocity.
370 * 2 = SW_INDEX = spectrum_width.
371 * 3 = CZ_INDEX = corrected reflectivity.
372 * 4 = ZT_INDEX = uncorrected reflectivity.
373 * 5 = DR_INDEX = differential refl.
374 * 6 = LR_INDEX = another differential refl.
375 * 7 = ZD_INDEX = another differential refl.
376 * 8 = DM_INDEX = received power.
377 * 9 = RH_INDEX = RhoHV: Horz-Vert power corr coeff
378 *10 = PH_INDEX = PhiDP: Differential phase angle
379 *11 = XZ_INDEX = X-band reflectivity.
380 *12 = CD_INDEX = Corrected DR.
381 *13 = MZ_INDEX = DZ mask for 1C-51 HDF.
382 *14 = MR_INDEX = DR mask for 1C-51 HDF.
383 *15 = ZE_INDEX = Edited reflectivity.
384 *16 = VE_INDEX = Edited velocity.
385 *17 = KD_INDEX = KDP: Specific differential phase, deg/km.
386 *18 = TI_INDEX = TIME (unknown) for MCTEX data.
392 *24 = SQ_INDEX = Signal Quality Index (Sigmet)
393 *25 = VS_INDEX = Radial Velocity Combined (DORADE)
394 *26 = VL_INDEX = Radial Velocity Combined (DORADE)
395 *27 = VG_INDEX = Radial Velocity Combined (DORADE)
396 *28 = VT_INDEX = Radial Velocity Combined (DORADE)
397 *29 = NP_INDEX = Normalized Coherent Power (DORADE)
398 *30 = HC_INDEX = HydroClass (Sigmet)
399 *31 = VC_INDEX = Radial Velocity Corrected (Sigmet)
400 *32 = V2_INDEX = Radial Velocity for VCP 121 second Doppler cut.
401 *33 = S2_INDEX = Spectrum Width for VCP 121 second Doppler cut.
402 *34 = V3_INDEX = Radial Velocity for VCP 121 third Doppler cut.
403 *35 = S3_INDEX = Spectrum Width for VCP 121 third Doppler cut.
409 * DZ Reflectivity (dBZ), may contain some DZ_INDEX
410 * signal-processor level QC and/or
411 * filters. This field would contain
412 * Darwin's CZ, or WSR88D's standard
413 * reflectivity. In other words, unless
414 * the field is described otherwise, it
415 * should always go here. In essence, this
416 * is the "cleanest" reflectivity field
419 * VR Radial Velocity (m/s) VR_INDEX
421 * SW Spectral Width (m2/s2) SW_INDEX
423 * CZ QC Reflectivity (dBZ), contains
424 * post-processed QC'd data CZ_INDEX
426 * ZT Total Reflectivity (dBZ) ZT_INDEX
427 * Reflectivity unfiltered for clutter...
428 * This is UZ in UF files.
430 * DR Differential reflectivity DR_INDEX
431 * DR and LR are for dual-polarization
432 * radars only. Unitless or in dB.
434 * LR Another form of differential ref LR_INDEX
435 * called LDR, not sure of units
437 * ZD ZDR: Reflectivity Depolarization Ratio ZD_INDEX
438 * ZDR = 10log(ZH/ZV) (dB)
440 * DM Received power measured by the radar. DM_INDEX
443 * RH RhoHV: Horz-Vert power correlation RH_INDEX
444 * coefficient. (0 to 1) See volume.c
446 * PH PhiDP: Differential phase angle. PH_INDEX
447 * (0 to 180 deg in steps of 0.71)
450 * XZ X-band reflectivity XZ_INDEX
452 * CD Corrected ZD reflectivity (differential) CD_INDEX
453 * contains QC'ed data
455 * MZ DZ mask volume for HDF 1C-51 product. MZ_INDEX
457 * MD ZD mask volume for HDF 1C-51 product. MD_INDEX
459 * ZE Edited Reflectivity. ZE_INDEX
461 * VE Edited Velocity. VE_INDEX
463 * KD KDP (deg/km) Differencial Phase KD_INDEX
466 * TI TIME (unknown) for MCTEX data. TI_INDEX
468 * SQ SQI: Signal Quality Index. (Sigmet) SQ_INDEX
469 * Decimal fraction from 0 to 1, where 0
470 * is noise, 1 is noiseless.
472 * VS Radial Velocity, Short PRT (m/s) (DORADE) VS_INDEX
474 * VL Radial Velocity, Long PRT (m/s) (DORADE) VL_INDEX
476 * VG Radial Velocity, combined (m/s) (DORADE) VG_INDEX
478 * VT Radial Velocity, combined (m/s) (DORADE) VT_INDEX
480 * NP Normalized Coherent Power. (DORADE) NP_INDEX
482 * HC HydroClass: enumerated class. (Sigmet) HC_INDEX
484 * VC Radial Velocity corrected for (Sigmet) VC_INDEX
489 * The number of *_INDEX must never exceed MAX_RADAR_VOLUMES.
490 * Increase MAX_RADAR_VOLUMES appropriately, for new ingest formats.
492 * Also, when adding new *_INDEXes, you must update the following three arrays
493 * located near the end of this file: RSL_ftype, RSL_f_list, and RSL_invf_list.
494 * You also need to modify volume.c, updating the initialization of array
495 * rsl_qfield by adding a '1' for each new volume index.
498 #define MAX_RADAR_VOLUMES 42
544 /* Prototypes for functions. */
545 /* Alphabetical and grouped by object returned. */
548 Radar *RSL_africa_to_radar(char *infile);
549 Radar *RSL_anyformat_to_radar(char *infile, ...);
550 Radar *RSL_dorade_to_radar(char *infile);
551 Radar *RSL_EDGE_to_radar(char *infile);
552 Radar *RSL_fix_radar_header(Radar *radar);
553 Radar *RSL_get_window_from_radar(Radar *r, float min_range, float max_range,float low_azim, float hi_azim);
554 Radar *RSL_hdf_to_radar(char *infile);
555 Radar *RSL_hdf_to_radar_unQC(char *infile);
556 Radar *RSL_kwaj_to_radar(char *infile);
557 Radar *RSL_lassen_to_radar(char *infile);
558 Radar *RSL_mcgill_to_radar(char *infile);
559 Radar *RSL_new_radar(int nvolumes);
560 Radar *RSL_nsig_to_radar(char *infile);
561 Radar *RSL_nsig2_to_radar(char *infile);
562 Radar *RSL_prune_radar(Radar *radar);
563 Radar *RSL_radtec_to_radar(char *infile);
564 Radar *RSL_rainbow_to_radar(char *infile);
565 Radar *RSL_rapic_to_radar(char *infile);
566 Radar *RSL_read_radar(char *infile);
567 Radar *RSL_sort_radar(Radar *r);
568 Radar *RSL_toga_to_radar(char *infile);
569 Radar *RSL_uf_to_radar(char *infile);
570 Radar *RSL_uf_to_radar_fp(FILE *fp);
571 Radar *RSL_wsr88d_to_radar(char *infile, char *call_or_first_tape_file);
573 Volume *RSL_clear_volume(Volume *v);
574 Volume *RSL_copy_volume(Volume *v);
575 Volume *RSL_fix_volume_header(Volume *v);
576 Volume *RSL_get_volume(Radar *r, int type_wanted);
577 Volume *RSL_get_window_from_volume(Volume *v, float min_range, float max_range, float low_azim, float hi_azim);
578 Volume *RSL_new_volume(int max_sweeps);
579 Volume *RSL_prune_volume(Volume *v);
580 Volume *RSL_read_volume(FILE *fp);
581 Volume *RSL_reverse_sweep_order(Volume *v);
582 Volume *RSL_sort_rays_in_volume(Volume *v);
583 Volume *RSL_sort_sweeps_in_volume(Volume *v);
584 Volume *RSL_sort_volume(Volume *v);
585 Volume *RSL_volume_z_to_r(Volume *z_volume, float k, float a);
587 Sweep *RSL_clear_sweep(Sweep *s);
588 Sweep *RSL_copy_sweep(Sweep *s);
589 Sweep *RSL_fix_sweep_header(Sweep *sweep);
590 Sweep *RSL_get_closest_sweep(Volume *v,float sweep_angle,float limit);
591 Sweep *RSL_get_eth_sweep(Volume *v,float et_point,float max_range);
592 Sweep *RSL_get_first_sweep_of_volume(Volume *v);
593 Sweep *RSL_get_sweep(Volume *v, float elev);
594 Sweep *RSL_get_window_from_sweep(Sweep *s, float min_range, float max_range, float low_azim, float hi_azim);
596 Sweep *RSL_new_sweep(int max_rays);
597 Sweep *RSL_prune_sweep(Sweep *s);
598 Sweep *RSL_read_sweep (FILE *fp);
599 Sweep *RSL_sort_rays_in_sweep(Sweep *s);
600 Sweep *RSL_sort_rays_by_time(Sweep *s);
601 Sweep *RSL_sweep_z_to_r(Sweep *z_sweep, float k, float a);
603 Ray *RSL_clear_ray(Ray *r);
604 Ray *RSL_copy_ray(Ray *r);
605 Ray *RSL_get_closest_ray_from_sweep(Sweep *s,float ray_angle,float limit);
606 Ray *RSL_get_first_ray_of_sweep(Sweep *s);
607 Ray *RSL_get_first_ray_of_volume(Volume *v);
608 Ray *RSL_get_closest_ray_from_sweep(Sweep *s,float ray_angle,float limit);
609 Ray *RSL_get_next_ccwise_ray(Sweep *s, Ray *ray);
610 Ray *RSL_get_next_cwise_ray(Sweep *s, Ray *ray);
611 Ray *RSL_get_ray(Volume *v, float elev, float azimuth);
612 Ray *RSL_get_ray_above(Volume *v, Ray *current_ray);
613 Ray *RSL_get_ray_below(Volume *v, Ray *current_ray);
614 Ray *RSL_get_ray_from_sweep(Sweep *s, float azim);
615 Ray *RSL_get_window_from_ray(Ray *r, float min_range, float max_range, float low_azim, float hi_azim);
616 Ray *RSL_new_ray(int max_bins);
617 Ray *RSL_prune_ray(Ray *ray);
618 Ray *RSL_ray_z_to_r(Ray *z_ray, float k, float a);
619 Ray *RSL_read_ray (FILE *fp);
622 float RSL_area_of_ray(Ray *r, float lo, float hi, float min_range, float max_range);
623 float RSL_fraction_of_ray(Ray *r, float lo, float hi, float range);
624 float RSL_fraction_of_sweep(Sweep *s, float lo, float hi, float range);
625 float RSL_fraction_of_volume(Volume *v, float lo, float hi, float range);
626 float RSL_fractional_area_of_sweep(Sweep *s, float lo, float hi, float min_rng, float max_rng);
627 float RSL_get_echo_top_height(Volume *v,float azim,float grange, float et_point);
628 float RSL_get_linear_value(Volume *v,float srange,float azim,float elev,float limit);
629 float RSL_get_nyquist_from_radar(Radar *radar);
630 float RSL_get_range_of_range_index(Ray *ray, int index);
631 float RSL_get_value(Volume *v, float elev, float azimuth, float range);
632 float RSL_get_value_at_h(Volume *v, float azim, float grnd_r, float h);
633 float RSL_get_value_from_cappi(Cappi *cappi, float rng, float azm);
634 float RSL_get_value_from_ray(Ray *ray, float r);
635 float RSL_get_value_from_sweep(Sweep *s, float azim, float r);
636 float RSL_z_to_r(float z, float k, float a);
638 int RSL_fill_cappi(Volume *v, Cappi *cap, int method);
639 int RSL_get_ray_index_from_sweep(Sweep *s, float azim,int *next_closest);
640 int RSL_get_sweep_index_from_volume(Volume *v, float elev,int *next_closest);
641 int RSL_radar_to_hdf(Radar *radar, char *outfile);
642 int RSL_write_histogram(Histogram *histogram, char *outfile);
643 int RSL_write_ray(Ray *r, FILE *fp);
644 int RSL_write_sweep(Sweep *s, FILE *fp);
645 int RSL_write_radar(Radar *radar, char *outfile);
646 int RSL_write_radar_gzip(Radar *radar, char *outfile);
647 int RSL_write_volume(Volume *v, FILE *fp);
649 unsigned char *RSL_rhi_sweep_to_cart(Sweep *s, int xdim, int ydim, float range,
651 unsigned char *RSL_sweep_to_cart(Sweep *s, int xdim, int ydim, float range);
653 void RSL_add_dbz_offset_to_ray(Ray *r, float dbz_offset);
654 void RSL_add_dbz_offset_to_sweep(Sweep *s, float dbz_offset);
655 void RSL_add_dbz_offset_to_volume(Volume *v, float dbz_offset);
656 void RSL_bscan_ray(Ray *r, FILE *fp);
657 void RSL_bscan_sweep(Sweep *s, char *outfile);
658 void RSL_bscan_volume(Volume *v, char *basename);
659 void RSL_find_rng_azm(float *r, float *ang, float x, float y);
660 void RSL_fix_time (Ray *ray);
661 void RSL_float_to_char(float *x, Range *c, int n);
663 void RSL_free_cappi(Cappi *c);
664 void RSL_free_carpi(Carpi *carpi);
665 void RSL_free_cube(Cube *cube);
666 void RSL_free_histogram(Histogram *histogram);
667 void RSL_free_ray(Ray *r);
668 void RSL_free_slice(Slice *slice);
669 void RSL_free_sweep(Sweep *s);
670 void RSL_free_radar(Radar *r);
671 void RSL_free_volume(Volume *v);
672 void RSL_get_color_table(int icolor, char buffer[256], int *ncolors);
673 void RSL_get_groundr_and_h(float slant_r, float elev, float *gr, float *h);
674 void RSL_get_slantr_and_elev(float gr, float h, float *slant_r, float *elev);
675 void RSL_get_slantr_and_h(float gr, float elev, float *slant_r, float *h);
676 void RSL_load_color_table(char *infile, char buffer[256], int *ncolors);
677 void RSL_load_height_color_table();
678 void RSL_load_rainfall_color_table();
679 void RSL_load_refl_color_table();
680 void RSL_load_vel_color_table();
681 void RSL_load_sw_color_table();
682 void RSL_load_zdr_color_table();
683 void RSL_load_red_table(char *infile);
684 void RSL_load_green_table(char *infile);
685 void RSL_load_blue_table(char *infile);
686 void RSL_print_histogram(Histogram *histogram, int min_range, int max_range,
688 void RSL_print_version();
689 void RSL_prune_radar_on();
690 void RSL_prune_radar_off();
691 void RSL_radar_to_uf(Radar *r, char *outfile);
692 void RSL_radar_to_uf_gzip(Radar *r, char *outfile);
693 void RSL_radar_verbose_off(void);
694 void RSL_radar_verbose_on(void);
695 void RSL_read_these_sweeps(char *csweep, ...);
696 void RSL_rebin_velocity_ray(Ray *r);
697 void RSL_rebin_velocity_sweep(Sweep *s);
698 void RSL_rebin_velocity_volume(Volume *v);
699 void RSL_rebin_zdr_ray(Ray *r);
700 void RSL_rebin_zdr_sweep(Sweep *s);
701 void RSL_rebin_zdr_volume(Volume *v);
702 void RSL_rhi_sweep_to_gif(Sweep *s, char *outfile, int xdim, int ydim, float range,
704 void RSL_select_fields(char *field_type, ...);
705 void RSL_set_color_table(int icolor, char buffer[256], int ncolors);
706 void RSL_sweep_to_gif(Sweep *s, char *outfile, int xdim, int ydim, float range);
707 void RSL_sweep_to_pgm(Sweep *s, char *outfile, int xdim, int ydim, float range);
708 void RSL_sweep_to_pict(Sweep *s, char *outfile, int xdim, int ydim, float range);
709 void RSL_sweep_to_ppm(Sweep *s, char *outfile, int xdim, int ydim, float range);
710 void RSL_volume_to_gif(Volume *v, char *basename, int xdim, int ydim, float range);
711 void RSL_volume_to_pgm(Volume *v, char *basename, int xdim, int ydim, float range);
712 void RSL_volume_to_pict(Volume *v, char *basename, int xdim, int ydim, float range);
713 void RSL_volume_to_ppm(Volume *v, char *basename, int xdim, int ydim, float range);
714 void RSL_write_gif(char *outfile, unsigned char *image,
715 int xdim, int ydim, char c_table[256][3]);
716 void RSL_write_pgm(char *outfile, unsigned char *image,
718 void RSL_write_pict(char *outfile, unsigned char *image,
719 int xdim, int ydim, char c_table[256][3]);
720 void RSL_write_ppm(char *outfile, unsigned char *image,
721 int xdim, int ydim, char c_table[256][3]);
724 Cappi *RSL_new_cappi(Sweep *sweep, float height);
725 Cappi *RSL_cappi_at_h(Volume *v, float height, float max_range);
727 Carpi *RSL_cappi_to_carpi(Cappi *cappi, float dx, float dy,
728 float lat, float lon,
729 int nx, int ny, int radar_x, int radar_y);
730 Carpi *RSL_new_carpi(int nrows, int ncols);
731 Carpi *RSL_volume_to_carpi(Volume *v, float h, float grnd_r,
732 float dx, float dy, int nx, int ny,
733 int radar_x, int radar_y, float lat, float lon);
735 Cube *RSL_new_cube(int ncarpi);
736 Cube *RSL_volume_to_cube(Volume *v, float dx, float dy, float dz,
737 int nx, int ny, int nz, float grnd_r,
738 int radar_x, int radar_y, int radar_z);
740 Slice *RSL_new_slice(int nrows, int ncols);
741 Slice *RSL_get_slice_from_cube(Cube *cube, int x, int y, int z);
744 Histogram *RSL_allocate_histogram(int low, int hi);
745 Histogram *RSL_get_histogram_from_ray(Ray *ray, Histogram *histogram,
746 int low, int hi, int min_range,
748 Histogram *RSL_get_histogram_from_sweep(Sweep *sweep, Histogram *histogram,
749 int low, int hi, int min_range,
751 Histogram *RSL_get_histogram_from_volume(Volume *volume, Histogram *histogram,
752 int low, int hi, int min_range,
754 Histogram *RSL_read_histogram(char *infile);
756 int no_command (char *cmd);
757 FILE *uncompress_pipe (FILE *fp);
758 FILE *compress_pipe (FILE *fp);
759 int rsl_pclose(FILE *fp);
761 /* Carpi image generation functions. These are modified clones of the
762 corresponding sweep image generation functions.
764 unsigned char *RSL_carpi_to_cart(Carpi *carpi, int xdim, int ydim,
766 void RSL_carpi_to_gif(Carpi *carpi, char *outfile, int xdim, int ydim,
768 void RSL_carpi_to_pict(Carpi *carpi, char *outfile, int xdim, int ydim,
770 void RSL_carpi_to_ppm(Carpi *carpi, char *outfile, int xdim, int ydim,
772 void RSL_carpi_to_pgm(Carpi *carpi, char *outfile, int xdim, int ydim,
775 /* Internal storage conversion functions. These may be any conversion and
776 * may be dynamically defined; based on the input data conversion.
812 Range DZ_INVF(float x);
813 Range VR_INVF(float x);
814 Range SW_INVF(float x);
815 Range CZ_INVF(float x);
816 Range ZT_INVF(float x);
817 Range DR_INVF(float x);
818 Range LR_INVF(float x);
819 Range ZD_INVF(float x);
820 Range DM_INVF(float x);
821 Range RH_INVF(float x);
822 Range PH_INVF(float x);
823 Range XZ_INVF(float x);
824 Range CD_INVF(float x);
825 Range MZ_INVF(float x);
826 Range MD_INVF(float x);
827 Range ZE_INVF(float x);
828 Range VE_INVF(float x);
829 Range KD_INVF(float x);
830 Range TI_INVF(float x);
831 Range DX_INVF(float x);
832 Range CH_INVF(float x);
833 Range AH_INVF(float x);
834 Range CV_INVF(float x);
835 Range AV_INVF(float x);
836 Range SQ_INVF(float x);
837 Range VS_INVF(float x);
838 Range VL_INVF(float x);
839 Range VG_INVF(float x);
840 Range VT_INVF(float x);
841 Range NP_INVF(float x);
842 Range HC_INVF(float x);
843 Range VC_INVF(float x);
844 Range SD_INVF(float x);
847 /* If you like these variables, you can use them in your application
848 * by defining USE_RSL_VARS before #include "rsl.h"
851 static char *RSL_ftype[] = {"DZ", "VR", "SW", "CZ", "ZT", "DR",
852 "LR", "ZD", "DM", "RH", "PH", "XZ",
853 "CD", "MZ", "MD", "ZE", "VE", "KD",
854 "TI", "DX", "CH", "AH", "CV", "AV",
855 "SQ", "VS", "VL", "VG", "VT", "NP",
856 "HC", "VC", "V2", "S2", "V3", "S3",
857 "CR", "CC", "PR", "SD", "ZZ", "RD"};
859 static float (*RSL_f_list[])(Range x) = {DZ_F, VR_F, SW_F, CZ_F, ZT_F, DR_F,
860 LR_F, ZD_F, DM_F, RH_F, PH_F, XZ_F,
861 CD_F, MZ_F, MD_F, ZE_F, VE_F, KD_F,
862 TI_F, DX_F, CH_F, AH_F, CV_F, AV_F,
863 SQ_F, VS_F, VL_F, VG_F, VT_F, NP_F,
864 HC_F, VC_F, VR_F, SW_F, VR_F, SW_F,
865 DZ_F, CZ_F, PH_F, SD_F, DZ_F, DZ_F};
867 static Range (*RSL_invf_list[])(float x)
868 = {DZ_INVF, VR_INVF, SW_INVF, CZ_INVF, ZT_INVF, DR_INVF,
869 LR_INVF, ZD_INVF, DM_INVF, RH_INVF, PH_INVF, XZ_INVF,
870 CD_INVF, MZ_INVF, MD_INVF, ZE_INVF, VE_INVF, KD_INVF,
871 TI_INVF, DX_INVF, CH_INVF, AH_INVF, CV_INVF, AV_INVF,
872 SQ_INVF, VS_INVF, VL_INVF, VG_INVF, VT_INVF, NP_INVF,
873 HC_INVF, VC_INVF, VR_INVF, SW_INVF, VR_INVF, SW_INVF,
874 DZ_INVF, CZ_INVF, PH_INVF, SD_INVF, DZ_INVF, DZ_INVF};
876 /* Secret routines that are quite useful and useful to developers. */
877 void radar_load_date_time(Radar *radar);
878 int big_endian(void);
879 int little_endian(void);
880 void swap_4_bytes(void *word);
881 void swap_2_bytes(void *word);
882 Hash_table *hash_table_for_sweep(Sweep *s);
883 int hash_bin(Hash_table *table,float angle);
884 Azimuth_hash *the_closest_hash(Azimuth_hash *hash, float ray_angle);
885 Hash_table *construct_sweep_hash_table(Sweep *s);
886 double angle_diff(float x, float y);
887 int rsl_query_field(char *c_field);
890 /* Debugging prototypes. */
891 void poke_around_volume(Volume *v);
893 /* SYSTEM: left out prototypes? */
894 extern int pclose (FILE *f); /* From stdio.h */