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 #define RSL_VERSION_STR "v1.43"
32 /**********************************************************************/
33 /* Configure: Define USE_TWO_BYTE_PRECISION to have RSL store internal*/
34 /* values with two bytes. Otherwise, use one byte. */
35 /* It is a good idea to use two byte precision. */
36 /* See 'makefile' for an additional explaination. */
38 /**********************************************************************/
39 #define USE_TWO_BYTE_PRECISION
42 /**********************************************************************/
43 /* Configure: Define the file name of the red,green, and blue color */
44 /* color tables. This maps reflectance to color. */
45 /* This should be $(LIBDIR)/colors, from the makefile */
46 /* so you shouldn't have to modify anything here. */
47 /**********************************************************************/
49 #define COLORDIR "/usr/local/trmm/lib/colors"
52 /* These are the color table indexes. See RSL_set/get_color_table. */
53 #define RSL_RED_TABLE 0
54 #define RSL_GREEN_TABLE 1
55 #define RSL_BLUE_TABLE 2
57 /* The default color tables for reflectivity, velocity, spectral width,
58 * height, rainfall, and zdr.
60 #define REFL_RED_FILE COLORDIR "/red_reflectivity.clr"
61 #define REFL_GREEN_FILE COLORDIR "/grn_reflectivity.clr"
62 #define REFL_BLUE_FILE COLORDIR "/blu_reflectivity.clr"
63 #define VEL_RED_FILE COLORDIR "/red_velocity.clr"
64 #define VEL_GREEN_FILE COLORDIR "/grn_velocity.clr"
65 #define VEL_BLUE_FILE COLORDIR "/blu_velocity.clr"
66 #define SW_RED_FILE COLORDIR "/red_spectral_width.clr"
67 #define SW_GREEN_FILE COLORDIR "/grn_spectral_width.clr"
68 #define SW_BLUE_FILE COLORDIR "/blu_spectral_width.clr"
69 #define HEIGHT_RED_FILE COLORDIR "/red_height.clr"
70 #define HEIGHT_GREEN_FILE COLORDIR "/grn_height.clr"
71 #define HEIGHT_BLUE_FILE COLORDIR "/blu_height.clr"
72 #define RAINFALL_RED_FILE COLORDIR "/red_rainfall.clr"
73 #define RAINFALL_GREEN_FILE COLORDIR "/grn_rainfall.clr"
74 #define RAINFALL_BLUE_FILE COLORDIR "/blu_rainfall.clr"
76 /* Added by D. Wolff 07/31/97 */
77 #define ZDR_RED_FILE COLORDIR "/red_zdr.clr"
78 #define ZDR_GREEN_FILE COLORDIR "/grn_zdr.clr"
79 #define ZDR_BLUE_FILE COLORDIR "/blu_zdr.clr"
81 /*************************************************************************/
82 /* You should not have to change anything below this line.
83 * The rest is my fault.
85 /*************************************************************************/
89 * Magic numbers. These are used to uniquely identify the type of
90 * values present in a particular structure: Volume, Sweep, Ray.
91 * The magic numbers V_DZ, V_VR, V_SW, etc. represent Volume magic
92 * numbers for the field types DZ, VR, SW, etc. Similiar magic numbers
93 * are implimented for Sweep, and Ray. The magic number is the first word
94 * of the data structure. These magic number may determine which conversion
95 * function is used, see volume.c and the end of this file for the
96 * conversion functions. (As of v0.39 -- NOT YET IMPLEMENTED.)
99 V_DZ, V_VR, V_SW, V_CZ, V_ZT, V_DR, V_LR,
100 S_DZ, S_VR, S_SW, S_CZ, S_ZT, S_DR, S_LR,
101 R_DZ, R_VR, R_SW, R_CZ, R_ZT, R_DR, R_LR
104 /* File format types recognized by RSL. */
105 enum File_type {UNKNOWN, WSR88D_FILE, UF_FILE, LASSEN_FILE,
106 TOGA_FILE, NSIG_FILE_V1, NSIG_FILE_V2,
107 RSL_FILE, MCGILL_FILE, HDF_FILE, RAPIC_FILE,
108 RADTEC_FILE, DORADE_FILE, RAINBOW_FILE};
110 /* Pick a BADVAL that is out of range. That is, the range
111 * of the conversion cannot include these reserved values.
112 * Typically, pick a number that cannot be stored in the Range data type.
114 #ifdef USE_TWO_BYTE_PRECISION
115 typedef unsigned short Range;
116 #define BADVAL (float)0x20000
118 typedef unsigned char Range;
119 #define BADVAL (float)0500 /* non-meaningful value (500 octal) */
122 #define RFVAL (BADVAL-1) /* Range folded value. See rfival. */
123 #define APFLAG (BADVAL-2)
124 #define NOTFOUND_H (BADVAL-3)
125 #define NOTFOUND_V (BADVAL-4)
126 #define NOECHO (BADVAL-5) /* For nsig and UF -32, for kwaj -30 */
127 #define RSL_SPEED_OF_LIGHT 299792458.0 /* m/s */
130 int month; /* Time for this ray; month (1-12). */
131 int day; /* Time for this ray; day (1-31). */
132 int year; /* Time for this ray; year (eg. 1993). */
133 int hour; /* Date for this ray; hour (0-23). */
134 int minute;/* Date for this ray; minute (0-59).*/
135 float sec; /* Date for this ray; second + fraction of second. */
136 float unam_rng; /* Unambiguous range. (KM). */
137 float azimuth; /* Azimuth angle (degrees). Must be positive.
138 * 0=North, 90=east, -90/270=west.
139 * This angle is the mean azimuth for the whole ray.
140 * E.g. for NSIG the beginning and end azimuths are averaged.
142 int ray_num; /* Ray no. within elevation scan. */
143 float elev; /* Elevation angle. (degrees). */
144 int elev_num; /* Elevation no. within volume scan. */
146 int range_bin1; /* Range to first gate.(meters) */
147 int gate_size; /* Data gate size (meters)*/
149 float vel_res; /* Doppler velocity resolution */
150 float sweep_rate; /* Sweep rate. Full sweeps/min. */
152 int prf; /* Pulse repetition frequency, in Hz. */
153 int prf2; /* Second PRF, for Sigmet dual PRF */
154 float azim_rate; /* Sweep rate in degrees/sec. */
155 float fix_angle; /* Elevation angle for the sweep. (degrees). */
156 float pitch; /* Pitch angle. */
157 float roll; /* Roll angle. */
158 float heading; /* Heading. */
159 float pitch_rate; /* (angle/sec) */
160 float roll_rate; /* (angle/sec) */
161 float heading_rate; /* (angle/sec) */
162 float lat; /* Latitude (degrees) */
163 float lon; /* Longitude (degrees) */
164 int alt; /* Altitude (m) */
165 float rvc; /* Radial velocity correction (m/sec) */
166 float vel_east; /* Platform velocity to the east (negative for west) (m/sec) */
167 float vel_north; /* Platform velocity to the north (negative south) (m/sec) */
168 float vel_up; /* Platform velocity toward up (negative down) (m/sec) */
169 int pulse_count; /* Pulses used in a single dwell time. */
170 float pulse_width; /* Pulse width (micro-sec). */
171 float beam_width; /* Beamwidth in degrees. */
172 float frequency; /* Carrier freq. GHz. */
173 float wavelength; /* Wavelength. Meters. */
174 float nyq_vel; /* Nyquist velocity. m/s */
175 float (*f)(Range x); /* Data conversion function. f(x). */
176 Range (*invf)(float x); /* Data conversion function. invf(x). */
177 int nbins; /* Number of array elements for 'Range'. */
183 Range *range; /* range[0..nbins-1]
185 * 0..460 for reflectivity, 0..920 for velocity and
191 typedef struct _azimuth_hash {
193 struct _azimuth_hash *next, *ray_high, *ray_low;
197 Azimuth_hash **indexes;
203 int sweep_num; /* Integer sweep number. This may be redundant, since
204 * this will be the same as the Volume.sweep array index.*/
205 float elev; /* Elevation angle (mean) for the sweep. Value is -999 for
207 float azimuth; /* Azimuth for the sweep (RHI). Value is -999 for PPI. */
208 float beam_width; /* This is in the ray header too. */
209 float vert_half_bw; /* Vertical beam width divided by 2 */
210 float horz_half_bw; /* Horizontal beam width divided by 2 */
213 float (*f)(Range x); /* Data conversion function. f(x). */
214 Range (*invf)(float x); /* Data conversion function. invf(x). */
219 Ray **ray; /* ray[0..nrays-1]. */
223 char *type_str; /* One of:'Reflectivity', 'Velocity' or 'Spectrum width' */
225 float calibr_const; /* Calibration constant. HDF specific. */
226 float (*f)(Range x); /* Data conversion function. f(x). */
227 Range (*invf)(float x); /* Data conversion function. invf(x). */
231 Volume_header h; /* Specific info for each elev. */
232 /* Includes resolution: km/bin. */
233 Sweep **sweep; /* sweep[0..nsweeps-1]. */
238 typedef Range Carpi_value;
239 typedef Range Cappi_value;
242 int month; /* (1-12). */
243 int day; /* (1-31). */
244 int year; /* (eg. 1993). */
245 int hour; /* (0-23). */
246 int minute; /* (0-59).*/
247 float sec; /* second + fraction of second. */
248 float dx, dy; /* Size of cell in km. */
249 int nx, ny; /* Number of cells. */
250 int radar_x, radar_y; /* Location of center of radar. */
251 float height; /* Height of this Carpi. */
252 float lat, lon; /* Lat/lon of lower left corner of Carpi. */
253 char radar_type[50]; /* Radar types. */
254 int field_type; /* Same as for Radar. */
255 int interp_method; /* ??? string describing interpolation method. */
256 float (*f)(Carpi_value x); /* Data conversion function. f(x). */
257 Carpi_value (*invf)(float x); /* Data conversion function. invf(x). */
258 Carpi_value **data; /* data[ny][nx] */
261 /** Cappi data structure info **/
262 /* Paul A. Kucera **/
264 /* Element in location array of Cappi data structure.
265 * Each element is elvation and range to data value.
269 float elev; /* elevation angle */
270 float srange; /* slant range !!! */
274 /* Cappi data structure.
277 int month; /* Begin time for this Cappi; month (1-12). */
278 int day; /* Begin time for this Cappi; day (1-31). */
279 int year; /* Begin time for this Cappi; year (eg. 1993). */
280 int hour; /* Begin date for this Cappi; hour (0-23). */
281 int minute; /* Begin date for this Cappi; minute (0-59).*/
282 float sec; /* Begin date for this Cappi; second + frac. of second.*/
283 float height; /* Height for this Cappi in m */
286 int field_type; /* Value of Constant ??_INDEX */
287 char radar_type[50]; /* Value of Constant radar->h.radar_type */
288 int interp_method; /* ??? string describing interpolation method. */
289 Er_loc *loc; /* elevation and range coordinate array */
290 Sweep *sweep; /* Pointers to rays of data */
293 /* The Cube data type. */
295 typedef Range Cube_value;
296 typedef Range Slice_value;
304 Carpi **carpi; /* Pointers to carpi[0] thru carpi[nz-1] */
312 float (*f)(Slice_value x); /* Data conversion function. f(x). */
313 Slice_value (*invf)(float x); /* Data conversion function. invf(x). */
314 Slice_value **data; /* data[ny][nx]. */
326 enum scan_mode {PPI, RHI};
329 int month, day, year;
331 float sec; /* Second plus fractional part. */
332 char radar_type[50]; /* Type of radar. Use for QC-ing the data.
333 * Supported types are:
334 * "wsr88d", "lassen", "uf",
336 * "kwajalein", "rsl", "toga",
337 * "rapic", (rapic is Berrimah Austrailia)
338 * "radtec", (SPANDAR radar at Wallops Is, VA)
341 * Set by appropriate ingest routine.
345 int number; /* arbitrary number of this radar site */
346 char name[8]; /* Nexrad site name */
347 char radar_name[8]; /* Radar name. */
348 char project[24]; /* Project identifier. */
349 char city[15]; /* nearest city to radar site */
350 char state[3]; /* state of radar site */
352 int latd; /* degrees of latitude of site */
353 int latm; /* minutes of latitude of site */
354 int lats; /* seconds of latitude of site */
355 int lond; /* degrees of longitude of site */
356 int lonm; /* minutes of longitude of site */
357 int lons; /* seconds of longitude of site */
358 int height; /* height of site in meters above sea level*/
359 int spulse; /* length of short pulse (ns)*/
360 int lpulse; /* length of long pulse (ns) */
361 int scan_mode; /* 0 = PPI, 1 = RHI */
362 int vcp; /* Volume Coverage Pattern (for WSR-88D only) */
368 Volume **v; /* Array 0..nvolumes-1 of pointers to Volumes.
369 * 0 = DZ_INDEX = reflectivity.
370 * 1 = VR_INDEX = velocity.
371 * 2 = SW_INDEX = spectrum_width.
372 * 3 = CZ_INDEX = corrected reflectivity.
373 * 4 = ZT_INDEX = uncorrected reflectivity.
374 * 5 = DR_INDEX = differential refl.
375 * 6 = LR_INDEX = another differential refl.
376 * 7 = ZD_INDEX = another differential refl.
377 * 8 = DM_INDEX = received power.
378 * 9 = RH_INDEX = RhoHV: Horz-Vert power corr coeff
379 *10 = PH_INDEX = PhiDP: Differential phase angle
380 *11 = XZ_INDEX = X-band reflectivity.
381 *12 = CD_INDEX = Corrected DR.
382 *13 = MZ_INDEX = DZ mask for 1C-51 HDF.
383 *14 = MR_INDEX = DR mask for 1C-51 HDF.
384 *15 = ZE_INDEX = Edited reflectivity.
385 *16 = VE_INDEX = Edited velocity.
386 *17 = KD_INDEX = KDP: Specific differential phase, deg/km.
387 *18 = TI_INDEX = TIME (unknown) for MCTEX data.
393 *24 = SQ_INDEX = Signal Quality Index (Sigmet)
394 *25 = VS_INDEX = Radial Velocity Combined (DORADE)
395 *26 = VL_INDEX = Radial Velocity Combined (DORADE)
396 *27 = VG_INDEX = Radial Velocity Combined (DORADE)
397 *28 = VT_INDEX = Radial Velocity Combined (DORADE)
398 *29 = NP_INDEX = Normalized Coherent Power (DORADE)
399 *30 = HC_INDEX = HydroClass (Sigmet)
400 *31 = VC_INDEX = Radial Velocity Corrected (Sigmet)
401 *32 = V2_INDEX = Radial Velocity for VCP 121 second Doppler cut.
402 *33 = S2_INDEX = Spectrum Width for VCP 121 second Doppler cut.
403 *34 = V3_INDEX = Radial Velocity for VCP 121 third Doppler cut.
404 *35 = S3_INDEX = Spectrum Width for VCP 121 third Doppler cut.
410 * DZ Reflectivity (dBZ), may contain some DZ_INDEX
411 * signal-processor level QC and/or
412 * filters. This field would contain
413 * Darwin's CZ, or WSR88D's standard
414 * reflectivity. In other words, unless
415 * the field is described otherwise, it
416 * should always go here. In essence, this
417 * is the "cleanest" reflectivity field
420 * VR Radial Velocity (m/s) VR_INDEX
422 * SW Spectral Width (m2/s2) SW_INDEX
424 * CZ QC Reflectivity (dBZ), contains
425 * post-processed QC'd data CZ_INDEX
427 * ZT Total Reflectivity (dBZ) ZT_INDEX
428 * Reflectivity unfiltered for clutter...
429 * This is UZ in UF files.
431 * DR Differential reflectivity DR_INDEX
432 * DR and LR are for dual-polarization
433 * radars only. Unitless or in dB.
435 * LR Another form of differential ref LR_INDEX
436 * called LDR, not sure of units
438 * ZD ZDR: Reflectivity Depolarization Ratio ZD_INDEX
439 * ZDR = 10log(ZH/ZV) (dB)
441 * DM Received power measured by the radar. DM_INDEX
444 * RH RhoHV: Horz-Vert power correlation RH_INDEX
445 * coefficient. (0 to 1) See volume.c
447 * PH PhiDP: Differential phase angle. PH_INDEX
448 * (0 to 180 deg in steps of 0.71)
451 * XZ X-band reflectivity XZ_INDEX
453 * CD Corrected ZD reflectivity (differential) CD_INDEX
454 * contains QC'ed data
456 * MZ DZ mask volume for HDF 1C-51 product. MZ_INDEX
458 * MD ZD mask volume for HDF 1C-51 product. MD_INDEX
460 * ZE Edited Reflectivity. ZE_INDEX
462 * VE Edited Velocity. VE_INDEX
464 * KD KDP (deg/km) Differencial Phase KD_INDEX
467 * TI TIME (unknown) for MCTEX data. TI_INDEX
469 * SQ SQI: Signal Quality Index. (Sigmet) SQ_INDEX
470 * Decimal fraction from 0 to 1, where 0
471 * is noise, 1 is noiseless.
473 * VS Radial Velocity, Short PRT (m/s) (DORADE) VS_INDEX
475 * VL Radial Velocity, Long PRT (m/s) (DORADE) VL_INDEX
477 * VG Radial Velocity, combined (m/s) (DORADE) VG_INDEX
479 * VT Radial Velocity, combined (m/s) (DORADE) VT_INDEX
481 * NP Normalized Coherent Power. (DORADE) NP_INDEX
483 * HC HydroClass: enumerated class. (Sigmet) HC_INDEX
485 * VC Radial Velocity corrected for (Sigmet) VC_INDEX
490 * The number of *_INDEX must never exceed MAX_RADAR_VOLUMES.
491 * Increase MAX_RADAR_VOLUMES appropriately, for new ingest formats.
493 * Also, when adding new *_INDEXes, you must update the following three arrays
494 * located near the end of this file: RSL_ftype, RSL_f_list, and RSL_invf_list.
495 * You also need to modify volume.c, updating the initialization of array
496 * rsl_qfield by adding a '1' for each new volume index.
499 #define MAX_RADAR_VOLUMES 42
545 /* Prototypes for functions. */
546 /* Alphabetical and grouped by object returned. */
549 Radar *RSL_africa_to_radar(char *infile);
550 Radar *RSL_anyformat_to_radar(char *infile, ...);
551 Radar *RSL_dorade_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_radar_to_uf(Radar *r, char *outfile);
690 void RSL_radar_to_uf_gzip(Radar *r, char *outfile);
691 void RSL_radar_verbose_off(void);
692 void RSL_radar_verbose_on(void);
693 void RSL_read_these_sweeps(char *csweep, ...);
694 void RSL_rebin_velocity_ray(Ray *r);
695 void RSL_rebin_velocity_sweep(Sweep *s);
696 void RSL_rebin_velocity_volume(Volume *v);
697 void RSL_rebin_zdr_ray(Ray *r);
698 void RSL_rebin_zdr_sweep(Sweep *s);
699 void RSL_rebin_zdr_volume(Volume *v);
700 void RSL_rhi_sweep_to_gif(Sweep *s, char *outfile, int xdim, int ydim, float range,
702 void RSL_select_fields(char *field_type, ...);
703 void RSL_set_color_table(int icolor, char buffer[256], int ncolors);
704 void RSL_sweep_to_gif(Sweep *s, char *outfile, int xdim, int ydim, float range);
705 void RSL_sweep_to_pgm(Sweep *s, char *outfile, int xdim, int ydim, float range);
706 void RSL_sweep_to_pict(Sweep *s, char *outfile, int xdim, int ydim, float range);
707 void RSL_sweep_to_ppm(Sweep *s, char *outfile, int xdim, int ydim, float range);
708 void RSL_volume_to_gif(Volume *v, char *basename, int xdim, int ydim, float range);
709 void RSL_volume_to_pgm(Volume *v, char *basename, int xdim, int ydim, float range);
710 void RSL_volume_to_pict(Volume *v, char *basename, int xdim, int ydim, float range);
711 void RSL_volume_to_ppm(Volume *v, char *basename, int xdim, int ydim, float range);
712 void RSL_write_gif(char *outfile, unsigned char *image,
713 int xdim, int ydim, char c_table[256][3]);
714 void RSL_write_pgm(char *outfile, unsigned char *image,
716 void RSL_write_pict(char *outfile, unsigned char *image,
717 int xdim, int ydim, char c_table[256][3]);
718 void RSL_write_ppm(char *outfile, unsigned char *image,
719 int xdim, int ydim, char c_table[256][3]);
721 Cappi *RSL_new_cappi(Sweep *sweep, float height);
722 Cappi *RSL_cappi_at_h(Volume *v, float height, float max_range);
724 Carpi *RSL_cappi_to_carpi(Cappi *cappi, float dx, float dy,
725 float lat, float lon,
726 int nx, int ny, int radar_x, int radar_y);
727 Carpi *RSL_new_carpi(int nrows, int ncols);
728 Carpi *RSL_volume_to_carpi(Volume *v, float h, float grnd_r,
729 float dx, float dy, int nx, int ny,
730 int radar_x, int radar_y, float lat, float lon);
732 Cube *RSL_new_cube(int ncarpi);
733 Cube *RSL_volume_to_cube(Volume *v, float dx, float dy, float dz,
734 int nx, int ny, int nz, float grnd_r,
735 int radar_x, int radar_y, int radar_z);
737 Slice *RSL_new_slice(int nrows, int ncols);
738 Slice *RSL_get_slice_from_cube(Cube *cube, int x, int y, int z);
741 Histogram *RSL_allocate_histogram(int low, int hi);
742 Histogram *RSL_get_histogram_from_ray(Ray *ray, Histogram *histogram,
743 int low, int hi, int min_range,
745 Histogram *RSL_get_histogram_from_sweep(Sweep *sweep, Histogram *histogram,
746 int low, int hi, int min_range,
748 Histogram *RSL_get_histogram_from_volume(Volume *volume, Histogram *histogram,
749 int low, int hi, int min_range,
751 Histogram *RSL_read_histogram(char *infile);
753 int no_command (char *cmd);
754 FILE *uncompress_pipe (FILE *fp);
755 FILE *compress_pipe (FILE *fp);
756 int rsl_pclose(FILE *fp);
758 /* Carpi image generation functions. These are modified clones of the
759 corresponding sweep image generation functions.
761 unsigned char *RSL_carpi_to_cart(Carpi *carpi, int xdim, int ydim,
763 void RSL_carpi_to_gif(Carpi *carpi, char *outfile, int xdim, int ydim,
765 void RSL_carpi_to_pict(Carpi *carpi, char *outfile, int xdim, int ydim,
767 void RSL_carpi_to_ppm(Carpi *carpi, char *outfile, int xdim, int ydim,
769 void RSL_carpi_to_pgm(Carpi *carpi, char *outfile, int xdim, int ydim,
772 /* Internal storage conversion functions. These may be any conversion and
773 * may be dynamically defined; based on the input data conversion.
809 Range DZ_INVF(float x);
810 Range VR_INVF(float x);
811 Range SW_INVF(float x);
812 Range CZ_INVF(float x);
813 Range ZT_INVF(float x);
814 Range DR_INVF(float x);
815 Range LR_INVF(float x);
816 Range ZD_INVF(float x);
817 Range DM_INVF(float x);
818 Range RH_INVF(float x);
819 Range PH_INVF(float x);
820 Range XZ_INVF(float x);
821 Range CD_INVF(float x);
822 Range MZ_INVF(float x);
823 Range MD_INVF(float x);
824 Range ZE_INVF(float x);
825 Range VE_INVF(float x);
826 Range KD_INVF(float x);
827 Range TI_INVF(float x);
828 Range DX_INVF(float x);
829 Range CH_INVF(float x);
830 Range AH_INVF(float x);
831 Range CV_INVF(float x);
832 Range AV_INVF(float x);
833 Range SQ_INVF(float x);
834 Range VS_INVF(float x);
835 Range VL_INVF(float x);
836 Range VG_INVF(float x);
837 Range VT_INVF(float x);
838 Range NP_INVF(float x);
839 Range HC_INVF(float x);
840 Range VC_INVF(float x);
841 Range SD_INVF(float x);
844 /* If you like these variables, you can use them in your application
845 * by defining USE_RSL_VARS before #include "rsl.h"
848 static char *RSL_ftype[] = {"DZ", "VR", "SW", "CZ", "ZT", "DR",
849 "LR", "ZD", "DM", "RH", "PH", "XZ",
850 "CD", "MZ", "MD", "ZE", "VE", "KD",
851 "TI", "DX", "CH", "AH", "CV", "AV",
852 "SQ", "VS", "VL", "VG", "VT", "NP",
853 "HC", "VC", "V2", "S2", "V3", "S3",
854 "CR", "CC", "PR", "SD", "ZZ", "RD"};
856 static float (*RSL_f_list[])(Range x) = {DZ_F, VR_F, SW_F, CZ_F, ZT_F, DR_F,
857 LR_F, ZD_F, DM_F, RH_F, PH_F, XZ_F,
858 CD_F, MZ_F, MD_F, ZE_F, VE_F, KD_F,
859 TI_F, DX_F, CH_F, AH_F, CV_F, AV_F,
860 SQ_F, VS_F, VL_F, VG_F, VT_F, NP_F,
861 HC_F, VC_F, VR_F, SW_F, VR_F, SW_F,
862 DZ_F, CZ_F, PH_F, SD_F, DZ_F, DZ_F};
864 static Range (*RSL_invf_list[])(float x)
865 = {DZ_INVF, VR_INVF, SW_INVF, CZ_INVF, ZT_INVF, DR_INVF,
866 LR_INVF, ZD_INVF, DM_INVF, RH_INVF, PH_INVF, XZ_INVF,
867 CD_INVF, MZ_INVF, MD_INVF, ZE_INVF, VE_INVF, KD_INVF,
868 TI_INVF, DX_INVF, CH_INVF, AH_INVF, CV_INVF, AV_INVF,
869 SQ_INVF, VS_INVF, VL_INVF, VG_INVF, VT_INVF, NP_INVF,
870 HC_INVF, VC_INVF, VR_INVF, SW_INVF, VR_INVF, SW_INVF,
871 DZ_INVF, CZ_INVF, PH_INVF, SD_INVF, DZ_INVF, DZ_INVF};
873 /* Secret routines that are quite useful and useful to developers. */
874 void radar_load_date_time(Radar *radar);
875 int big_endian(void);
876 int little_endian(void);
877 void swap_4_bytes(void *word);
878 void swap_2_bytes(void *word);
879 Hash_table *hash_table_for_sweep(Sweep *s);
880 int hash_bin(Hash_table *table,float angle);
881 Azimuth_hash *the_closest_hash(Azimuth_hash *hash, float ray_angle);
882 Hash_table *construct_sweep_hash_table(Sweep *s);
883 double angle_diff(float x, float y);
884 int rsl_query_field(char *c_field);
887 /* Debugging prototypes. */
888 void poke_around_volume(Volume *v);
890 /* SYSTEM: left out prototypes? */
891 extern int pclose (FILE *f); /* From stdio.h */