1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
|
# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <math/gsurfit.h>
include <pkg/gtools.h>
include <mach.h>
include <math.h>
include <gset.h>
include "geomap.h"
include "geogmap.h"
define MAX_PARAMS (10 * SZ_LINE)
define NINTERVALS 5
define NGRAPH 100
$for (r)
# GEO_LABEL -- Annotate the plot.
procedure geo_label (plot_type, gt, fit)
int plot_type #I type of plot
pointer gt #I gtools descriptor
pointer fit #I geomap fit parameters
int npts
pointer sp, params, xtermlab, ytermlab
real xrms, yrms, rej
int strlen(), rg_wrdstr()
begin
call smark (sp)
call salloc (params, MAX_PARAMS, TY_CHAR)
call salloc (xtermlab, SZ_FNAME, TY_CHAR)
call salloc (ytermlab, SZ_FNAME, TY_CHAR)
npts = max (0, GM_NPTS(fit) - GM_NWTS0(fit))
xrms = max (0.0d0, GM_XRMS(fit))
yrms = max (0.0d0, GM_YRMS(fit))
if (npts > 1) {
xrms = sqrt (xrms / (npts - 1))
yrms = sqrt (yrms / (npts - 1))
} else {
xrms = 0.0
yrms = 0.0
}
if (IS_INDEFD(GM_REJECT(fit)))
rej = INDEFR
else if (GM_REJECT(fit) > MAX_REAL)
rej = INDEFR
else
rej = GM_REJECT(fit)
# Print data parameters.
if (GM_PROJECTION(fit) == GM_NONE)
call sprintf (Memc[params], MAX_PARAMS,
"GEOMAP: function = %s npts = %d reject = %g nrej = %d\n")
else
call sprintf (Memc[params], MAX_PARAMS,
"CCMAP: function = %s npts = %d reject = %g nrej = %d\n")
switch (GM_FUNCTION(fit)) {
case GS_LEGENDRE:
call pargstr ("legendre")
case GS_CHEBYSHEV:
call pargstr ("chebyshev")
case GS_POLYNOMIAL:
call pargstr ("polynomial")
}
call pargi (GM_NPTS(fit))
call pargr (rej)
call pargi (GM_NWTS0(fit))
# Print fit parameters.
switch (plot_type) {
case FIT:
if (rg_wrdstr ((GM_XXTERMS(fit) + 1), Memc[xtermlab], SZ_FNAME,
GM_XFUNCS) <= 0)
call strcpy ("none", Memc[xtermlab], SZ_FNAME)
if (rg_wrdstr ((GM_YXTERMS(fit) + 1), Memc[ytermlab], SZ_FNAME,
GM_XFUNCS) <= 0)
call strcpy ("none", Memc[ytermlab], SZ_FNAME)
if (GM_PROJECTION(fit) == GM_NONE)
call sprintf (Memc[params+strlen(Memc[params])], MAX_PARAMS,
"X fit: xorder = %d yorder = %d xterms = %s stdev = %8.3g\n")
else
call sprintf (Memc[params+strlen(Memc[params])], MAX_PARAMS,
"XI fit: xorder = %d yorder = %d xterms = %s stdev = %8.3g arcsec\n")
call pargi (GM_XXORDER(fit))
call pargi (GM_XYORDER(fit))
call pargstr (Memc[xtermlab])
call pargr (xrms)
if (GM_PROJECTION(fit) == GM_NONE)
call sprintf (Memc[params+strlen(Memc[params])], MAX_PARAMS,
"Y fit: xorder = %d yorder = %d xterms = %s stdev = %8.3g\n")
else
call sprintf (Memc[params+strlen(Memc[params])], MAX_PARAMS,
"ETA fit: xorder = %d yorder = %d xterms = %s stdev = %8.3g arcsec\n")
call pargi (GM_YXORDER(fit))
call pargi (GM_YYORDER(fit))
call pargstr (Memc[ytermlab])
call pargr (yrms)
case XXRESID, XYRESID:
if (rg_wrdstr ((GM_XXTERMS(fit) + 1), Memc[xtermlab], SZ_FNAME,
GM_XFUNCS) <= 0)
call strcpy ("none", Memc[xtermlab], SZ_FNAME)
if (GM_PROJECTION(fit) == GM_NONE)
call sprintf (Memc[params+strlen(Memc[params])], MAX_PARAMS,
"X fit: xorder = %d yorder = %d xterms = %s rms = %8.3g\n")
else
call sprintf (Memc[params+strlen(Memc[params])], MAX_PARAMS,
"XI fit: xorder = %d yorder = %d xterms = %s rms = %8.3g arcsec\n")
call pargi (GM_XXORDER(fit))
call pargi (GM_XYORDER(fit))
call pargstr (Memc[xtermlab])
call pargr (xrms)
case YXRESID, YYRESID:
if (rg_wrdstr ((GM_YXTERMS(fit) + 1), Memc[ytermlab], SZ_FNAME,
GM_XFUNCS) <= 0)
call strcpy ("none", Memc[ytermlab], SZ_FNAME)
if (GM_PROJECTION(fit) == GM_NONE)
call sprintf (Memc[params+strlen(Memc[params])], MAX_PARAMS,
"Y fit: xorder = %d yorder = %d xterms = %s rms = %8.3g\n")
else
call sprintf (Memc[params+strlen(Memc[params])], MAX_PARAMS,
"ETA fit: xorder = %d yorder = %d xterms = %s rms = %8.3g arcsec\n")
call pargi (GM_YXORDER(fit))
call pargi (GM_YYORDER(fit))
call pargstr (Memc[ytermlab])
call pargr (yrms)
default:
# do nothing gracefully
}
call gt_sets (gt, GTPARAMS, Memc[params])
call sfree (sp)
end
# GEO_GTSET -- Write title and labels.
procedure geo_gtset (plot_type, gt, fit)
int plot_type #I plot type
pointer gt #I plot descriptor
pointer fit #I fit descriptor
char str[SZ_LINE]
int nchars
int gstrcpy()
begin
nchars = gstrcpy (GM_RECORD(fit), str, SZ_LINE)
switch (plot_type) {
case FIT:
if (GM_PROJECTION(fit) == GM_NONE)
call strcpy (": Coordinate Transformation", str[nchars+1],
SZ_LINE)
else
call strcpy (": Celestial Coordinate Transformation",
str[nchars+1], SZ_LINE)
call gt_sets (gt, GTTITLE, str)
if (GM_PROJECTION(fit) == GM_NONE) {
call gt_sets (gt, GTXLABEL, "X (in units)")
call gt_sets (gt, GTYLABEL, "Y (in units)")
} else {
call gt_sets (gt, GTXLABEL, "XI (arcsec)")
call gt_sets (gt, GTYLABEL, "ETA (arcsec)")
}
case XXRESID:
if (GM_PROJECTION(fit) == GM_NONE)
call strcpy (": X fit Residuals", str[nchars+1], SZ_LINE)
else
call strcpy (": XI fit Residuals", str[nchars+1], SZ_LINE)
call gt_sets (gt, GTTITLE, str)
if (GM_PROJECTION(fit) == GM_NONE) {
call gt_sets (gt, GTXLABEL, "X (ref units)")
call gt_sets (gt, GTYLABEL, "X Residuals (in units)")
} else {
call gt_sets (gt, GTXLABEL, "X (pixels)")
call gt_sets (gt, GTYLABEL, "XI Residuals (arcsec)")
}
case XYRESID:
if (GM_PROJECTION(fit) == GM_NONE)
call strcpy (": X fit Residuals", str[nchars+1], SZ_LINE)
else
call strcpy (": XI fit Residuals", str[nchars+1], SZ_LINE)
call gt_sets (gt, GTTITLE, str)
if (GM_PROJECTION(fit) == GM_NONE) {
call gt_sets (gt, GTXLABEL, "Y (ref units)")
call gt_sets (gt, GTYLABEL, "X Residuals (in units)")
} else {
call gt_sets (gt, GTXLABEL, "Y (pixels)")
call gt_sets (gt, GTYLABEL, "XI Residuals (arcsec)")
}
case YXRESID:
if (GM_PROJECTION(fit) == GM_NONE)
call strcpy (": Y fit Residuals", str[nchars+1], SZ_LINE)
else
call strcpy (": ETA fit Residuals", str[nchars+1], SZ_LINE)
call gt_sets (gt, GTTITLE, str)
if (GM_PROJECTION(fit) == GM_NONE) {
call gt_sets (gt, GTXLABEL, "X (ref units)")
call gt_sets (gt, GTYLABEL, "Y (Residuals (in units)")
} else {
call gt_sets (gt, GTXLABEL, "X (pixels)")
call gt_sets (gt, GTYLABEL, "ETA Residuals (arcsec)")
}
case YYRESID:
if (GM_PROJECTION(fit) == GM_NONE)
call strcpy (": Y fit Residuals", str[nchars+1], SZ_LINE)
else
call strcpy (": ETA fit Residuals", str[nchars+1], SZ_LINE)
call gt_sets (gt, GTTITLE, str)
if (GM_PROJECTION(fit) == GM_NONE) {
call gt_sets (gt, GTXLABEL, "Y (ref units)")
call gt_sets (gt, GTYLABEL, "Y Residuals (in units)")
} else {
call gt_sets (gt, GTXLABEL, "Y (pixels)")
call gt_sets (gt, GTYLABEL, "ETA Residuals (arcsec)")
}
default:
# do nothing gracefully
}
end
# GEO_COLON -- Process the colon commands.
procedure geo_colon (gd, fit, gfit, cmdstr, newgraph)
pointer gd #I graphics stream
pointer fit #I pointer to fit structure
pointer gfit #I pointer to the gfit structure
char cmdstr[ARB] #I command string
int newgraph #I plot new graph
int ncmd, ival
pointer sp, str, cmd
real rval
int nscan(), strdic(), rg_wrdstr()
begin
call smark (sp)
call salloc (cmd, SZ_LINE, TY_CHAR)
call salloc (str, SZ_FNAME, TY_CHAR)
call sscan (cmdstr)
call gargwrd (Memc[cmd], SZ_LINE)
if (nscan() == 0) {
call sfree (sp)
return
}
ncmd = strdic (Memc[cmd], Memc[cmd], SZ_LINE, GM_CMDS)
switch (ncmd) {
case GMCMD_SHOW:
call gdeactivate (gd, AW_CLEAR)
call printf ("Current Fitting Parameters\n\n")
if (GM_PROJECTION(fit) != GM_NONE) {
if (rg_wrdstr (GM_PROJECTION(fit), Memc[str], SZ_FNAME,
GM_PROJLIST) <= 0)
;
call printf ("\tprojection = %s\n")
call pargstr (Memc[str])
call printf ("\tlngref = %h\n")
call pargd (GM_XREFPT(fit))
call printf ("\tlatref = %h\n")
call pargd (GM_YREFPT(fit))
}
if (rg_wrdstr (GM_FIT(fit), Memc[str], SZ_FNAME,
GM_GEOMETRIES) <= 0)
call strcpy ("general", Memc[str], SZ_FNAME)
call printf ("\tfitgeometry = %s\n")
call pargstr (Memc[str])
if (rg_wrdstr (GM_FUNCTION(fit), Memc[str], SZ_FNAME,
GM_FUNCS) <= 0)
call strcpy ("polynomial", Memc[str], SZ_FNAME)
call printf ("\tfunction = %s\n")
Call pargstr (Memc[str])
call printf ("\txxorder = %d\n")
call pargi (GM_XXORDER(fit))
call printf ("\txyorder = %d\n")
call pargi (GM_XYORDER(fit))
if (rg_wrdstr ((GM_XXTERMS(fit) + 1), Memc[str], SZ_FNAME,
GM_XFUNCS) <= 0)
call strcpy ("none", Memc[str], SZ_FNAME)
call printf ("\txxterms = %s\n")
call pargstr (Memc[str])
call printf ("\tyxorder = %d\n")
call pargi (GM_YXORDER(fit))
call printf ("\tyyorder = %d\n")
call pargi (GM_YYORDER(fit))
if (rg_wrdstr ((GM_YXTERMS(fit) + 1), Memc[str], SZ_FNAME,
GM_XFUNCS) <= 0)
call strcpy ("none", Memc[str], SZ_FNAME)
call printf ("\tyxterms = %s\n")
call pargstr (Memc[str])
if (IS_INDEFD(GM_REJECT(fit)))
rval = INDEFR
else if (GM_REJECT(fit) > MAX_REAL)
rval = INDEFR
else
rval = GM_REJECT(fit)
call printf ("\treject = %f\n")
call pargr (rval)
call greactivate (gd, AW_PAUSE)
case GMCMD_PROJECTION:
if (rg_wrdstr (GM_PROJECTION(fit), Memc[str], SZ_FNAME,
GM_PROJLIST) <= 0)
call strcpy ("INDEF", Memc[str], SZ_FNAME)
call printf ("projection = %s\n")
call pargstr (Memc[str])
case GMCMD_REFPOINT:
call printf ("lngref = %h latref = %h\n")
call pargd (GM_XREFPT(fit))
call pargd (GM_YREFPT(fit))
case GMCMD_GEOMETRY:
call gargwrd (Memc[cmd], SZ_LINE)
if (nscan () == 1) {
if (rg_wrdstr (GM_FIT(fit), Memc[str], SZ_FNAME,
GM_GEOMETRIES) <= 0)
call strcpy ("general", Memc[str], SZ_FNAME)
call printf ("fitgeometry = %s\n")
call pargstr (Memc[str])
} else {
ival = strdic (Memc[cmd], Memc[cmd], SZ_LINE, GM_GEOMETRIES)
if (ival > 0) {
GM_FIT(fit) = ival
GG_NEWFUNCTION(gfit) = YES
GG_FITERROR(gfit) = NO
}
}
case GMCMD_FUNCTION:
call gargwrd (Memc[cmd], SZ_LINE)
if (nscan () == 1) {
if (rg_wrdstr (GM_FUNCTION(fit), Memc[str], SZ_FNAME,
GM_FUNCS) <= 0)
call strcpy ("polynomial", Memc[str], SZ_FNAME)
call printf ("function = %s\n")
call pargstr (Memc[str])
} else {
ival = strdic (Memc[cmd], Memc[cmd], SZ_LINE, GM_FUNCS)
if (ival > 0) {
GM_FUNCTION(fit) = ival
GG_NEWFUNCTION(gfit) = YES
GG_FITERROR(gfit) = NO
}
}
case GMCMD_ORDER:
call gargi (ival)
if (nscan () == 1) {
call printf (
"xxorder = %d xyorder = %d yxorder = %d yyorder = %d\n")
call pargi (GM_XXORDER(fit))
call pargi (GM_XYORDER(fit))
call pargi (GM_YXORDER(fit))
call pargi (GM_YYORDER(fit))
} else {
GM_XXORDER(fit) = max (ival, 2)
GM_XYORDER(fit) = max (ival, 2)
GM_YXORDER(fit) = max (ival, 2)
GM_YYORDER(fit) = max (ival, 2)
GG_NEWFUNCTION(gfit) = YES
GG_FITERROR(gfit) = NO
}
case GMCMD_XXORDER:
call gargi (ival)
if (nscan () == 1) {
call printf ("xxorder = %d\n")
call pargi (GM_XXORDER(fit))
} else {
GM_XXORDER(fit) = max (ival, 2)
GG_NEWFUNCTION(gfit) = YES
GG_FITERROR(gfit) = NO
}
case GMCMD_XYORDER:
call gargi (ival)
if (nscan () == 1) {
call printf ("xyorder = %d\n")
call pargi (GM_XYORDER(fit))
} else {
GM_XYORDER(fit) = max (ival,2)
GG_NEWFUNCTION(gfit) = YES
GG_FITERROR(gfit) = NO
}
case GMCMD_YXORDER:
call gargi (ival)
if (nscan () == 1) {
call printf ("yxorder = %d\n")
call pargi (GM_YXORDER(fit))
} else {
GM_YXORDER(fit) = max (ival, 2)
GG_NEWFUNCTION(gfit) = YES
GG_FITERROR(gfit) = NO
}
case GMCMD_YYORDER:
call gargi (ival)
if (nscan () == 1) {
call printf ("yyorder = %d\n")
call pargi (GM_YYORDER(fit))
} else {
GM_YYORDER(fit) = max (ival, 2)
GG_NEWFUNCTION(gfit) = YES
GG_FITERROR(gfit) = NO
}
case GMCMD_XXTERMS:
call gargwrd (Memc[cmd], SZ_LINE)
if (nscan () == 1) {
if (rg_wrdstr ((GM_XXTERMS(fit) + 1), Memc[str], SZ_FNAME,
GM_XFUNCS) <= 0)
call strcpy ("none", Memc[str], SZ_FNAME)
call printf ("xxterms = %s\n")
call pargstr (Memc[str])
} else {
ival = strdic (Memc[cmd], Memc[cmd], SZ_LINE, GM_XFUNCS)
if (ival > 0) {
GM_XXTERMS(fit) = ival - 1
GG_NEWFUNCTION(gfit) = YES
GG_FITERROR(gfit) = NO
}
}
case GMCMD_YXTERMS:
call gargwrd (Memc[cmd], SZ_LINE)
if (nscan () == 1) {
if (rg_wrdstr ((GM_YXTERMS(fit) + 1), Memc[str], SZ_FNAME,
GM_XFUNCS) <= 0)
call strcpy ("none", Memc[str], SZ_FNAME)
call printf ("yxterms = %s\n")
call pargstr (Memc[str])
} else {
ival = strdic (Memc[cmd], Memc[cmd], SZ_LINE, GM_XFUNCS)
if (ival > 0) {
GM_YXTERMS(fit) = ival - 1
GG_NEWFUNCTION(gfit) = YES
GG_FITERROR(gfit) = NO
}
}
case GMCMD_REJECT:
call gargr (rval)
if (nscan() == 1) {
if (IS_INDEFD(GM_REJECT(fit)))
rval = INDEFR
else if (GM_REJECT(fit) > MAX_REAL)
rval = INDEFR
else
rval = GM_REJECT(fit)
call printf ("reject = %f\n")
call pargr (rval)
} else {
GM_REJECT(fit) = rval
GG_NEWFUNCTION(gfit) = YES
GG_FITERROR(gfit) = NO
}
case GMCMD_MAXITER:
call gargi (ival)
if (nscan() == 1) {
call printf ("maxiter = %d\n")
call pargi (GM_MAXITER(fit))
} else {
GM_MAXITER(fit) = ival
GG_NEWFUNCTION(gfit) = YES
GG_FITERROR(gfit) = NO
}
}
call sfree (sp)
end
$endfor
$for (rd)
# GEO_1DELETE -- Delete a point from the fit.
procedure geo_1delete$t (gd, xin, yin, wts, userwts, npts, wx, wy, delete)
pointer gd #I pointer to graphics descriptor
PIXEL xin[ARB] #I x array
PIXEL yin[ARB] #I y array
PIXEL wts[ARB] #I array of weights
PIXEL userwts[ARB] #I array of user weights
int npts #I number of points
real wx, wy #I world coordinates
int delete #I delete points ?
int i, j, pmltype
real r2min, r2, x0, y0
int gstati()
begin
call gctran (gd, wx, wy, wx, wy, 1, 0)
r2min = MAX_REAL
j = 0
if (delete == YES) {
# Search for nearest point that has not been deleted.
do i = 1, npts {
if (wts[i] <= PIXEL(0.0))
next
$if (datatype == r)
call gctran (gd, xin[i], yin[i], x0, y0, 1, 0)
$else
call gctran (gd, real (xin[i]), real (yin[i]), x0, y0, 1, 0)
$endif
r2 = (x0 - wx) ** 2 + (y0 - wy) ** 2
if (r2 < r2min) {
r2min = r2
j = i
}
}
# Mark point and set weights to 0.
if (j != 0) {
$if (datatype == r)
call gscur (gd, xin[j], yin[j])
call gmark (gd, xin[j], yin[j], GM_CROSS, 2., 2.)
$else
call gscur (gd, real(xin[j]), real(yin[j]))
call gmark (gd, real(xin[j]), real(yin[j]), GM_CROSS, 2., 2.)
$endif
wts[j] = PIXEL(0.0)
}
} else {
# Search for the nearest deleted point.
do i = 1, npts {
if (wts[i] > PIXEL(0.0))
next
$if (datatype == r)
call gctran (gd, xin[i], yin[i], x0, y0, 1, 0)
$else
call gctran (gd, real(xin[i]), real(yin[i]), x0, y0, 1, 0)
$endif
r2 = (x0 - wx) ** 2 + (y0 - wy) ** 2
if (r2 < r2min) {
r2min = r2
j = i
}
}
# Erase cross and remark with a plus.
if (j != 0) {
$if (datatype == r)
call gscur (gd, xin[j], yin[j])
pmltype = gstati (gd, G_PMLTYPE)
call gseti (gd, G_PMLTYPE, 0)
call gmark (gd, xin[j], yin[j], GM_CROSS, 2., 2.)
call gseti (gd, G_PMLTYPE, pmltype)
call gmark (gd, xin[j], yin[j], GM_PLUS, 2., 2.)
$else
call gscur (gd, real(xin[j]), real(yin[j]))
pmltype = gstati (gd, G_PMLTYPE)
call gseti (gd, G_PMLTYPE, 0)
call gmark (gd, real(xin[j]), real(yin[j]), GM_CROSS, 2., 2.)
call gseti (gd, G_PMLTYPE, pmltype)
call gmark (gd, real(xin[j]), real(yin[j]), GM_PLUS, 2., 2.)
$endif
wts[j] = userwts[j]
}
}
end
# GEO_2DELETE -- Delete the residuals.
procedure geo_2delete$t (gd, x, resid, wts, userwts, npts, wx, wy, delete)
pointer gd #I pointer to graphics descriptor
PIXEL x[ARB] #I reference x values
PIXEL resid[ARB] #I residuals
PIXEL wts[ARB] #I weight array
PIXEL userwts[ARB] #I user weight array
int npts #I number of points
real wx #I world x coordinate
real wy #I world y coordinate
int delete #I delete point
int i, j, pmltype
real r2, r2min, x0, y0
int gstati()
begin
# Delete the point.
call gctran (gd, wx, wy, wx, wy, 1, 0)
r2min = MAX_REAL
j = 0
# Delete or add a point.
if (delete == YES) {
# Find the nearest undeleted point.
do i = 1, npts {
if (wts[i] <= PIXEL(0.0))
next
$if (datatype == r)
call gctran (gd, x[i], resid[i], x0, y0, 1, 0)
$else
call gctran (gd, real(x[i]), real(resid[i]), x0, y0, 1, 0)
$endif
r2 = (x0 - wx) ** 2 + (y0 - wy) ** 2
if (r2 < r2min) {
r2min = r2
j = i
}
}
# Mark the point with a cross and set weight to zero.
if (j != 0) {
$if (datatype == r)
call gscur (gd, x[j], resid[j])
call gmark (gd, x[j], resid[j], GM_CROSS, 2., 2.)
$else
call gscur (gd, real(x[j]), real(resid[j]))
call gmark (gd, real(x[j]), real(resid[j]), GM_CROSS, 2., 2.)
$endif
wts[j] = PIXEL(0.0)
}
} else {
# Find the nearest deleted point.
do i = 1, npts {
if (wts[i] > PIXEL(0.0))
next
$if (datatype == r)
call gctran (gd, x[i], resid[i], x0, y0, 1, 0)
$else
call gctran (gd, real(x[i]), real(resid[i]), x0, y0, 1, 0)
$endif
r2 = (x0 - wx) ** 2 + (y0 - wy) ** 2
if (r2 < r2min) {
r2min = r2
j = i
}
}
# Erase the cross and remark with a plus.
if (j != 0) {
$if (datatype == r)
call gscur (gd, x[j], resid[j])
pmltype = gstati (gd, G_PMLTYPE)
call gseti (gd, G_PMLTYPE, 0)
call gmark (gd, x[j], resid[j], GM_CROSS, 2., 2.)
call gseti (gd, G_PMLTYPE, pmltype)
call gmark (gd, x[j], resid[j], GM_PLUS, 2., 2.)
$else
call gscur (gd, real(x[j]), real(resid[j]))
pmltype = gstati (gd, G_PMLTYPE)
call gseti (gd, G_PMLTYPE, 0)
call gmark (gd, real(x[j]), real(resid[j]), GM_CROSS, 2., 2.)
call gseti (gd, G_PMLTYPE, pmltype)
call gmark (gd, real(x[j]), real(resid[j]), GM_PLUS, 2., 2.)
$endif
wts[j] = userwts[j]
}
}
end
# GEO_1GRAPH - Procedure to graph the distribution of the data in the x-y
# plane. Rejected points are marked by a ' ' and deleted points are marked
# by a ' '. The shift in position of the data points are indicated by
# vectors. Sample fits of constant x and y are marked on the plots.
procedure geo_1graph$t (gd, gt, fit, gfit, xref, yref, xin, yin, wts, npts)
pointer gd #I pointer to the graphics device
pointer gt #I pointer to the plot descriptor
pointer fit #I pointer to the geofit structure
pointer gfit #I pointer to the plot structure
PIXEL xref[ARB] #I x reference values
PIXEL yref[ARB] #I y reference values
PIXEL xin[ARB] #I x values
PIXEL yin[ARB] #I y values
PIXEL wts[ARB] #I array of weights
int npts #I number of points
int i, j
$if (datatype == d)
pointer sp, rxin, ryin
$endif
begin
# If previous plot different type don't overplot.
if (GG_PLOTTYPE(gfit) != FIT)
GG_OVERPLOT(gfit) = NO
# If not overplottting start new plot.
if (GG_OVERPLOT(gfit) == NO) {
# Set scale and axes.
call gclear (gd)
$if (datatype == r)
call gascale (gd, xin, npts, 1)
call gascale (gd, yin, npts, 2)
$else
call smark (sp)
call salloc (rxin, npts, TY_REAL)
call salloc (ryin, npts, TY_REAL)
call achtdr (xin, Memr[rxin], npts)
call achtdr (yin, Memr[ryin], npts)
call gascale (gd, Memr[rxin], npts, 1)
call gascale (gd, Memr[ryin], npts, 2)
call sfree (sp)
$endif
call gt_swind (gd, gt)
call gtlabax (gd, gt)
# Mark the data and deleted points.
do i = 1, npts {
$if (datatype == r)
if (wts[i] == PIXEL(0.0))
call gmark (gd, xin[i], yin[i], GM_CROSS, 2., 2.)
else
call gmark (gd, xin[i], yin[i], GM_PLUS, 2., 2.)
$else
if (wts[i] == PIXEL(0.0))
call gmark (gd, real(xin[i]), real(yin[i]), GM_CROSS,
2., 2.)
else
call gmark (gd, real(xin[i]), real(yin[i]), GM_PLUS,
2., 2.)
$endif
}
call gflush (gd)
}
# Mark the rejected points.
do i = 1, GM_NREJECT(fit) {
j = Memi[GM_REJ(fit)+i-1]
$if (datatype == r)
call gmark (gd, xin[j], yin[j], GM_CIRCLE, 2., 2.)
$else
call gmark (gd, real(xin[j]), real(yin[j]), GM_CIRCLE, 2., 2.)
$endif
}
call gflush (gd)
# Reset the status flags
GG_OVERPLOT(gfit) = NO
end
# GEO_2GRAPH -- Graph the x and y fit residuals versus x or y .
procedure geo_2graph$t (gd, gt, fit, gfit, x, resid, wts, npts)
pointer gd #I pointer to the graphics device
pointer gt #I pointer to the plot descriptor
pointer fit #I pointer to geomap structure
pointer gfit #I pointer to the plot structure
PIXEL x[ARB] #I x reference values
PIXEL resid[ARB] #I residual
PIXEL wts[ARB] #I array of weights
int npts #I number of points
int i, j
pointer sp, zero
$if (datatype == d)
pointer rxin, ryin
$endif
begin
# Allocate space.
call smark (sp)
call salloc (zero, npts, TY_REAL)
call amovkr (0.0, Memr[zero], npts)
# Calculate the residuals.
if (GG_PLOTTYPE(gfit) == FIT)
GG_OVERPLOT(gfit) = NO
if (GG_OVERPLOT(gfit) == NO) {
call gclear (gd)
# Set scale and axes.
$if (datatype == r)
call gascale (gd, x, npts, 1)
call gascale (gd, resid, npts, 2)
$else
call salloc (rxin, npts, TY_REAL)
call salloc (ryin, npts, TY_REAL)
call achtdr (x, Memr[rxin], npts)
call achtdr (resid, Memr[ryin], npts)
call gascale (gd, Memr[rxin], npts, 1)
call gascale (gd, Memr[ryin], npts, 2)
$endif
call gt_swind (gd, gt)
call gtlabax (gd, gt)
$if (datatype == r)
call gpline (gd, x, Memr[zero], npts)
$else
call gpline (gd, Memr[rxin], Memr[zero], npts)
$endif
}
# Graph residuals and mark deleted points.
if (GG_OVERPLOT(gfit) == NO || GG_NEWFUNCTION(gfit) == YES) {
do i = 1, npts {
$if (datatype == r)
if (wts[i] == PIXEL(0.0))
call gmark (gd, x[i], resid[i], GM_CROSS, 2., 2.)
else
call gmark (gd, x[i], resid[i], GM_PLUS, 2., 2.)
$else
if (wts[i] == PIXEL(0.0))
call gmark (gd, Memr[rxin+i-1], Memr[ryin+i-1],
GM_CROSS, 2., 2.)
else
call gmark (gd, Memr[rxin+i-1], Memr[ryin+i-1],
GM_PLUS, 2., 2.)
$endif
}
}
# plot rejected points
if (GM_NREJECT(fit) > 0) {
do i = 1, GM_NREJECT(fit) {
j = Memi[GM_REJ(fit)+i-1]
$if (datatype == r)
call gmark (gd, x[j], resid[j], GM_CIRCLE, 2., 2.)
$else
call gmark (gd, Memr[rxin+j-1], Memr[ryin+j-1], GM_CIRCLE,
2., 2.)
$endif
}
}
# Reset the status flag.
GG_OVERPLOT(gfit) = NO
call gflush (gd)
call sfree (sp)
end
# GEO_CONXY -- Plot a set of default lines of xref = const and yref = const.
procedure geo_conxy$t (gd, fit, sx1, sy1, sx2, sy2)
pointer gd #I graphics file descriptor
pointer fit #I fit descriptor
pointer sx1, sy1 #I pointer to the linear x and y surface fits
pointer sx2, sy2 #I pointer to the linear x and y surface fits
int i
pointer sp, xtemp, ytemp, xfit1, yfit1, xfit2, yfit2
$if (datatype == d)
pointer xbuf, ybuf
$endif
PIXEL xint, yint, dx, dy
begin
# allocate temporary space
call smark (sp)
call salloc (xtemp, NGRAPH, TY_PIXEL)
call salloc (ytemp, NGRAPH, TY_PIXEL)
call salloc (xfit1, NGRAPH, TY_PIXEL)
call salloc (yfit1, NGRAPH, TY_PIXEL)
call salloc (xfit2, NGRAPH, TY_PIXEL)
call salloc (yfit2, NGRAPH, TY_PIXEL)
$if (datatype == d)
call salloc (xbuf, NGRAPH, TY_REAL)
call salloc (ybuf, NGRAPH, TY_REAL)
$endif
# Calculate intervals in x and y.
dx = (GM_XMAX(fit) - GM_XMIN(fit)) / NINTERVALS
dy = (GM_YMAX(fit) - GM_YMIN(fit)) / (NGRAPH - 1)
# Set up an array of y values.
Mem$t[ytemp] = GM_YMIN(fit)
do i = 2, NGRAPH
Mem$t[ytemp+i-1] = Mem$t[ytemp+i-2] + dy
# Mark lines of constant x.
xint = GM_XMIN(fit)
for (i = 1; i <= NINTERVALS + 1; i = i + 1) {
# Set the x value.
call amovk$t (xint, Mem$t[xtemp], NGRAPH)
# X fit.
$if (datatype == r)
call gsvector (sx1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit1],
NGRAPH)
$else
call dgsvector (sx1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit1],
NGRAPH)
$endif
if (sx2 != NULL) {
$if (datatype == r)
call gsvector (sx2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit2],
NGRAPH)
$else
call dgsvector (sx2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit2],
NGRAPH)
$endif
call aadd$t (Mem$t[xfit1], Mem$t[xfit2], Mem$t[xfit1], NGRAPH)
}
# Y fit.
$if (datatype == r)
call gsvector (sy1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit1],
NGRAPH)
$else
call dgsvector (sy1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit1],
NGRAPH)
$endif
if (sy2 != NULL) {
$if (datatype == r)
call gsvector (sy2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit2],
NGRAPH)
$else
call dgsvector (sy2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit2],
NGRAPH)
$endif
call aadd$t (Mem$t[yfit1], Mem$t[yfit2], Mem$t[yfit1], NGRAPH)
}
# Plot line of constant x.
$if (datatype == r)
call gpline (gd, Memr[xfit1], Memr[yfit1], NGRAPH)
$else
call achtdr (Memd[xfit1], Memr[xbuf], NGRAPH)
call achtdr (Memd[yfit1], Memr[ybuf], NGRAPH)
call gpline (gd, Memr[xbuf], Memr[ybuf], NGRAPH)
$endif
# Update the x value.
xint = xint + dx
}
call gflush (gd)
# Calculate x and y intervals.
dx = (GM_XMAX(fit) - GM_XMIN(fit)) / (NGRAPH - 1)
dy = (GM_YMAX(fit) - GM_YMIN(fit)) / NINTERVALS
# Set up array of x values.
Mem$t[xtemp] = GM_XMIN(fit)
do i = 2, NGRAPH
Mem$t[xtemp+i-1] = Mem$t[xtemp+i-2] + dx
# Mark lines of constant y.
yint = GM_YMIN(fit)
for (i = 1; i <= NINTERVALS + 1; i = i + 1) {
# set the y value
call amovk$t (yint, Mem$t[ytemp], NGRAPH)
# X fit.
$if (datatype == r)
call gsvector (sx1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit1],
NGRAPH)
$else
call dgsvector (sx1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit1],
NGRAPH)
$endif
if (sx2 != NULL) {
$if (datatype == r)
call gsvector (sx2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit2],
NGRAPH)
$else
call dgsvector (sx2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit2],
NGRAPH)
$endif
call aadd$t (Mem$t[xfit1], Mem$t[xfit2], Mem$t[xfit1], NGRAPH)
}
# Y fit.
$if (datatype == r)
call gsvector (sy1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit1],
NGRAPH)
$else
call dgsvector (sy1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit1],
NGRAPH)
$endif
if (sy2 != NULL) {
$if (datatype == r)
call gsvector (sy2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit2],
NGRAPH)
$else
call dgsvector (sy2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit2],
NGRAPH)
$endif
call aadd$t (Mem$t[yfit1], Mem$t[yfit2], Mem$t[yfit1], NGRAPH)
}
# Plot line of constant y.
$if (datatype == r)
call gpline (gd, Memr[xfit1], Memr[yfit1], NGRAPH)
$else
call achtdr (Memd[xfit1], Memr[xbuf], NGRAPH)
call achtdr (Memd[yfit1], Memr[ybuf], NGRAPH)
call gpline (gd, Memr[xbuf], Memr[ybuf], NGRAPH)
$endif
# Update the y value.
yint = yint + dy
}
call gflush (gd)
call sfree (sp)
end
# GEO_LXY -- Draw a line of constant x-y.
procedure geo_lxy$t (gd, fit, sx1, sy1, sx2, sy2, xref, yref, xin, yin, npts,
wx, wy)
pointer gd #I pointer to graphics descriptor
pointer fit #I pointer to the fit parameters
pointer sx1 #I pointer to the linear x fit
pointer sy1 #I pointer to the linear y fit
pointer sx2 #I pointer to the higher order x fit
pointer sy2 #I pointer to the higher order y fit
PIXEL xref[ARB] #I x reference values
PIXEL yref[ARB] #I y reference values
PIXEL xin[ARB] #I x input values
PIXEL yin[ARB] #I y input values
int npts #I number of data points
real wx, wy #I x and y world coordinates
int i, j
pointer sp, xtemp, ytemp, xfit1, yfit1, xfit2, yfit2
$if (datatype == d)
pointer xbuf, ybuf
$endif
real x0, y0, r2, r2min
PIXEL delta, deltax, deltay
$if (datatype == r)
real gseval()
$else
double dgseval()
$endif
begin
# Transform world coordinates.
call gctran (gd, wx, wy, wx, wy, 1, 0)
r2min = MAX_REAL
j = 0
# Find the nearest data point.
do i = 1, npts {
$if (datatype == r)
call gctran (gd, xin[i], yin[i], x0, y0, 1, 0)
$else
call gctran (gd, real(xin[i]), real(yin[i]), x0, y0, 1, 0)
$endif
r2 = (x0 - wx) ** 2 + (y0 - wy) ** 2
if (r2 < r2min) {
r2min = r2
j = i
}
}
# Fit the line
if (j != 0) {
# Allocate temporary space.
call smark (sp)
call salloc (xtemp, NGRAPH, TY_PIXEL)
call salloc (ytemp, NGRAPH, TY_PIXEL)
call salloc (xfit1, NGRAPH, TY_PIXEL)
call salloc (yfit1, NGRAPH, TY_PIXEL)
call salloc (xfit2, NGRAPH, TY_PIXEL)
call salloc (yfit2, NGRAPH, TY_PIXEL)
$if (datatype == d)
call salloc (xbuf, NGRAPH, TY_REAL)
call salloc (ybuf, NGRAPH, TY_REAL)
$endif
# Compute the deltas.
$if (datatype == r)
deltax = xin[j] - gseval (sx1, xref[j], yref[j])
if (sx2 != NULL)
deltax = deltax - gseval (sx2, xref[j], yref[j])
deltay = yin[j] - gseval (sy1, xref[j], yref[j])
if (sy2 != NULL)
deltay = deltay - gseval (sy2, xref[j], yref[j])
$else
deltax = xin[j] - dgseval (sx1, xref[j], yref[j])
if (sx2 != NULL)
deltax = deltax - dgseval (sx2, xref[j], yref[j])
deltay = yin[j] - dgseval (sy1, xref[j], yref[j])
if (sy2 != NULL)
deltay = deltay - dgseval (sy2, xref[j], yref[j])
$endif
# Set up line of constant x.
call amovk$t (xref[j], Mem$t[xtemp], NGRAPH)
delta = (GM_YMAX(fit) - GM_YMIN(fit)) / (NGRAPH - 1)
Mem$t[ytemp] = GM_YMIN(fit)
do i = 2, NGRAPH
Mem$t[ytemp+i-1] = Mem$t[ytemp+i-2] + delta
# X solution.
$if (datatype == r)
call gsvector (sx1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit1],
NGRAPH)
$else
call dgsvector (sx1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit1],
NGRAPH)
$endif
if (sx2 != NULL) {
$if (datatype == r)
call gsvector (sx2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit2],
NGRAPH)
$else
call dgsvector (sx2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit2],
NGRAPH)
$endif
call aadd$t (Mem$t[xfit1], Mem$t[xfit2], Mem$t[xfit1], NGRAPH)
}
call aaddk$t (Mem$t[xfit1], deltax, Mem$t[xfit1], NGRAPH)
# Y solution.
$if (datatype == r)
call gsvector (sy1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit1],
NGRAPH)
$else
call dgsvector (sy1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit1],
NGRAPH)
$endif
if (sy2 != NULL) {
$if (datatype == r)
call gsvector (sy2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit2],
NGRAPH)
$else
call dgsvector (sy2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit2],
NGRAPH)
$endif
call aadd$t (Mem$t[yfit1], Mem$t[yfit2], Mem$t[yfit1], NGRAPH)
}
call aaddk$t (Mem$t[yfit1], deltay, Mem$t[yfit1], NGRAPH)
# Plot line of constant x.
$if (datatype == r)
call gpline (gd, Memr[xfit1], Memr[yfit1], NGRAPH)
$else
call achtdr (Memd[xfit1], Memr[xbuf], NGRAPH)
call achtdr (Memd[yfit1], Memr[ybuf], NGRAPH)
call gpline (gd, Memr[xbuf], Memr[ybuf], NGRAPH)
$endif
call gflush (gd)
# Set up line of constant y.
call amovk$t (yref[j], Mem$t[ytemp], NGRAPH)
delta = (GM_XMAX(fit) - GM_XMIN(fit)) / (NGRAPH - 1)
Mem$t[xtemp] = GM_XMIN(fit)
do i = 2, NGRAPH
Mem$t[xtemp+i-1] = Mem$t[xtemp+i-2] + delta
# X fit.
$if (datatype == r)
call gsvector (sx1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit1],
NGRAPH)
$else
call dgsvector (sx1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit1],
NGRAPH)
$endif
if (sx2 != NULL) {
$if (datatype == r)
call gsvector (sx2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit2],
NGRAPH)
$else
call dgsvector (sx2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[xfit2],
NGRAPH)
$endif
call aadd$t (Mem$t[xfit1], Mem$t[xfit2], Mem$t[xfit1], NGRAPH)
}
call aaddk$t (Mem$t[xfit1], deltax, Mem$t[xfit1], NGRAPH)
# Y fit.
$if (datatype == r)
call gsvector (sy1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit1],
NGRAPH)
$else
call dgsvector (sy1, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit1],
NGRAPH)
$endif
if (sy2 != NULL) {
$if (datatype == r)
call gsvector (sy2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit2],
NGRAPH)
$else
call dgsvector (sy2, Mem$t[xtemp], Mem$t[ytemp], Mem$t[yfit2],
NGRAPH)
$endif
call aadd$t (Mem$t[yfit1], Mem$t[yfit2], Mem$t[yfit1], NGRAPH)
}
call aaddk$t (Mem$t[yfit1], deltay, Mem$t[yfit1], NGRAPH)
# Plot line of constant y.
$if (datatype == r)
call gpline (gd, Memr[xfit1], Memr[yfit1], NGRAPH)
$else
call achtdr (Memd[xfit1], Memr[xbuf], NGRAPH)
call achtdr (Memd[yfit1], Memr[ybuf], NGRAPH)
call gpline (gd, Memr[xbuf], Memr[ybuf], NGRAPH)
$endif
call gflush (gd)
# Free space.
call sfree (sp)
}
end
# GEO_GCOEFF -- Print the coefficents of the linear portion of the
# fit, xshift, yshift,
procedure geo_gcoeff$t (sx, sy, xshift, yshift, a, b, c, d)
pointer sx #I pointer to the x surface fit
pointer sy #I pointer to the y surface fit
PIXEL xshift #O output x shift
PIXEL yshift #O output y shift
PIXEL a #O output x coefficient of x fit
PIXEL b #O output y coefficient of x fit
PIXEL c #O output x coefficient of y fit
PIXEL d #O output y coefficient of y fit
int nxxcoeff, nxycoeff, nyxcoeff, nyycoeff
pointer sp, xcoeff, ycoeff
PIXEL xxrange, xyrange, xxmaxmin, xymaxmin
PIXEL yxrange, yyrange, yxmaxmin, yymaxmin
$if (datatype == r)
int gsgeti()
real gsgetr()
$else
int dgsgeti()
double dgsgetd()
$endif
begin
# Allocate working space.
call smark (sp)
$if (datatype == r)
call salloc (xcoeff, gsgeti (sx, GSNCOEFF), TY_PIXEL)
call salloc (ycoeff, gsgeti (sy, GSNCOEFF), TY_PIXEL)
$else
call salloc (xcoeff, dgsgeti (sx, GSNCOEFF), TY_PIXEL)
call salloc (ycoeff, dgsgeti (sy, GSNCOEFF), TY_PIXEL)
$endif
# Get coefficients and numbers of coefficients.
$if (datatype == r)
call gscoeff (sx, Mem$t[xcoeff], nxxcoeff)
call gscoeff (sy, Mem$t[ycoeff], nyycoeff)
nxxcoeff = gsgeti (sx, GSNXCOEFF)
nxycoeff = gsgeti (sx, GSNYCOEFF)
nyxcoeff = gsgeti (sy, GSNXCOEFF)
nyycoeff = gsgeti (sy, GSNYCOEFF)
$else
call dgscoeff (sx, Mem$t[xcoeff], nxxcoeff)
call dgscoeff (sy, Mem$t[ycoeff], nyycoeff)
nxxcoeff = dgsgeti (sx, GSNXCOEFF)
nxycoeff = dgsgeti (sx, GSNYCOEFF)
nyxcoeff = dgsgeti (sy, GSNXCOEFF)
nyycoeff = dgsgeti (sy, GSNYCOEFF)
$endif
# Get the data range.
$if (datatype == r)
if (gsgeti (sx, GSTYPE) != GS_POLYNOMIAL) {
xxrange = (gsgetr (sx, GSXMAX) - gsgetr (sx, GSXMIN)) / 2.0
xxmaxmin = - (gsgetr (sx, GSXMAX) + gsgetr (sx, GSXMIN)) / 2.0
xyrange = (gsgetr (sx, GSYMAX) - gsgetr (sx, GSYMIN)) / 2.0
xymaxmin = - (gsgetr (sx, GSYMAX) + gsgetr (sx, GSYMIN)) / 2.0
$else
if (dgsgeti (sx, GSTYPE) != GS_POLYNOMIAL) {
xxrange = (dgsgetd (sx, GSXMAX) - dgsgetd (sx, GSXMIN)) / 2.0d0
xxmaxmin = - (dgsgetd (sx, GSXMAX) + dgsgetd (sx, GSXMIN)) / 2.0d0
xyrange = (dgsgetd (sx, GSYMAX) - dgsgetd (sx, GSYMIN)) / 2.0d0
xymaxmin = - (dgsgetd (sx, GSYMAX) + dgsgetd (sx, GSYMIN)) / 2.0d0
$endif
} else {
xxrange = PIXEL(1.0)
xxmaxmin = PIXEL(0.0)
xyrange = PIXEL(1.0)
xymaxmin = PIXEL(0.0)
}
$if (datatype == r)
if (gsgeti (sy, GSTYPE) != GS_POLYNOMIAL) {
yxrange = (gsgetr (sy, GSXMAX) - gsgetr (sy, GSXMIN)) / 2.0
yxmaxmin = - (gsgetr (sy, GSXMAX) + gsgetr (sy, GSXMIN)) / 2.0
yyrange = (gsgetr (sy, GSYMAX) - gsgetr (sy, GSYMIN)) / 2.0
yymaxmin = - (gsgetr (sy, GSYMAX) + gsgetr (sy, GSYMIN)) / 2.0
$else
if (dgsgeti (sy, GSTYPE) != GS_POLYNOMIAL) {
yxrange = (dgsgetd (sy, GSXMAX) - dgsgetd (sy, GSXMIN)) / 2.0d0
yxmaxmin = - (dgsgetd (sy, GSXMAX) + dgsgetd (sy, GSXMIN)) / 2.0d0
yyrange = (dgsgetd (sy, GSYMAX) - dgsgetd (sy, GSYMIN)) / 2.0d0
yymaxmin = - (dgsgetd (sy, GSYMAX) + dgsgetd (sy, GSYMIN)) / 2.0d0
$endif
} else {
yxrange = PIXEL(1.0)
yxmaxmin = PIXEL(0.0)
yyrange = PIXEL(1.0)
yymaxmin = PIXEL(0.0)
}
# Get the shifts.
xshift = Mem$t[xcoeff] + Mem$t[xcoeff+1] * xxmaxmin / xxrange +
Mem$t[xcoeff+2] * xymaxmin / xyrange
yshift = Mem$t[ycoeff] + Mem$t[ycoeff+1] * yxmaxmin / yxrange +
Mem$t[ycoeff+2] * yymaxmin / yyrange
# Get the rotation and scaling parameters and correct for normalization.
if (nxxcoeff > 1)
a = Mem$t[xcoeff+1] / xxrange
else
a = PIXEL(0.0)
if (nxycoeff > 1)
b = Mem$t[xcoeff+nxxcoeff] / xyrange
else
b = PIXEL(0.0)
if (nyxcoeff > 1)
c = Mem$t[ycoeff+1] / yxrange
else
c = PIXEL(0.0)
if (nyycoeff > 1)
d = Mem$t[ycoeff+nyxcoeff] / yyrange
else
d = PIXEL(0.0)
call sfree (sp)
end
$endfor
|
