PostGIS  3.1.6dev-r@@SVN_REVISION@@

◆ RASTER_asRaster()

Datum RASTER_asRaster ( PG_FUNCTION_ARGS  )

Definition at line 723 of file rtpg_geometry.c.

724 {
725  GSERIALIZED *gser = NULL;
726 
727  LWGEOM *geom = NULL;
728  rt_raster rast = NULL;
729  rt_pgraster *pgrast = NULL;
730 
731  lwvarlena_t *wkb;
732  unsigned char variant = WKB_SFSQL;
733 
734  double scale[2] = {0};
735  double *scale_x = NULL;
736  double *scale_y = NULL;
737 
738  int dim[2] = {0};
739  int *dim_x = NULL;
740  int *dim_y = NULL;
741 
742  ArrayType *array;
743  Oid etype;
744  Datum *e;
745  bool *nulls;
746  int16 typlen;
747  bool typbyval;
748  char typalign;
749  int n = 0;
750  int i = 0;
751  int j = 0;
752  int haserr = 0;
753 
754  text *pixeltypetext = NULL;
755  char *pixeltype = NULL;
756  rt_pixtype pixtype = PT_END;
757  rt_pixtype *pixtypes = NULL;
758  uint32_t pixtypes_len = 0;
759 
760  double *values = NULL;
761  uint32_t values_len = 0;
762 
763  uint8_t *hasnodatas = NULL;
764  double *nodatavals = NULL;
765  uint32_t nodatavals_len = 0;
766 
767  double ulw[2] = {0};
768  double *ul_xw = NULL;
769  double *ul_yw = NULL;
770 
771  double gridw[2] = {0};
772  double *grid_xw = NULL;
773  double *grid_yw = NULL;
774 
775  double skew[2] = {0};
776  double *skew_x = NULL;
777  double *skew_y = NULL;
778 
779  char **options = NULL;
780  int options_len = 0;
781 
782  uint32_t num_bands = 0;
783 
784  int32_t srid = SRID_UNKNOWN;
785  char *srs = NULL;
786 
787  POSTGIS_RT_DEBUG(3, "RASTER_asRaster: Starting");
788 
789  /* based upon LWGEOM_asBinary function in postgis/lwgeom_ogc.c */
790 
791  /* Get the geometry */
792  if (PG_ARGISNULL(0))
793  PG_RETURN_NULL();
794 
795  gser = PG_GETARG_GSERIALIZED_P(0);
796  geom = lwgeom_from_gserialized(gser);
797 
798  /* Get a 2D version of the geometry if necessary */
799  if (lwgeom_ndims(geom) > 2) {
800  LWGEOM *geom2d = lwgeom_force_2d(geom);
801  lwgeom_free(geom);
802  geom = geom2d;
803  }
804 
805  /* empty geometry, return empty raster */
806  if (lwgeom_is_empty(geom)) {
807  POSTGIS_RT_DEBUG(3, "Input geometry is empty. Returning empty raster");
808  lwgeom_free(geom);
809  PG_FREE_IF_COPY(gser, 0);
810 
811  rast = rt_raster_new(0, 0);
812  if (rast == NULL)
813  PG_RETURN_NULL();
814 
815  pgrast = rt_raster_serialize(rast);
816  rt_raster_destroy(rast);
817 
818  if (NULL == pgrast)
819  PG_RETURN_NULL();
820 
821  SET_VARSIZE(pgrast, pgrast->size);
822  PG_RETURN_POINTER(pgrast);
823  }
824 
825  /* scale x */
826  if (!PG_ARGISNULL(1)) {
827  scale[0] = PG_GETARG_FLOAT8(1);
828  if (FLT_NEQ(scale[0], 0.0))
829  scale_x = &scale[0];
830  }
831 
832  /* scale y */
833  if (!PG_ARGISNULL(2)) {
834  scale[1] = PG_GETARG_FLOAT8(2);
835  if (FLT_NEQ(scale[1], 0.0))
836  scale_y = &scale[1];
837  }
838  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: scale (x, y) = %f, %f", scale[0], scale[1]);
839 
840  /* width */
841  if (!PG_ARGISNULL(3)) {
842  dim[0] = PG_GETARG_INT32(3);
843  if (dim[0] < 0) dim[0] = 0;
844  if (dim[0] != 0) dim_x = &dim[0];
845  }
846 
847  /* height */
848  if (!PG_ARGISNULL(4)) {
849  dim[1] = PG_GETARG_INT32(4);
850  if (dim[1] < 0) dim[1] = 0;
851  if (dim[1] != 0) dim_y = &dim[1];
852  }
853  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: dim (x, y) = %d, %d", dim[0], dim[1]);
854 
855  /* pixeltype */
856  if (!PG_ARGISNULL(5)) {
857  array = PG_GETARG_ARRAYTYPE_P(5);
858  etype = ARR_ELEMTYPE(array);
859  get_typlenbyvalalign(etype, &typlen, &typbyval, &typalign);
860 
861  switch (etype) {
862  case TEXTOID:
863  break;
864  default:
865 
866  lwgeom_free(geom);
867  PG_FREE_IF_COPY(gser, 0);
868 
869  elog(ERROR, "RASTER_asRaster: Invalid data type for pixeltype");
870  PG_RETURN_NULL();
871  break;
872  }
873 
874  deconstruct_array(array, etype, typlen, typbyval, typalign, &e,
875  &nulls, &n);
876 
877  if (n) {
878  pixtypes = (rt_pixtype *) palloc(sizeof(rt_pixtype) * n);
879  /* clean each pixeltype */
880  for (i = 0, j = 0; i < n; i++) {
881  if (nulls[i]) {
882  pixtypes[j++] = PT_64BF;
883  continue;
884  }
885 
886  pixeltype = NULL;
887  switch (etype) {
888  case TEXTOID:
889  pixeltypetext = (text *) DatumGetPointer(e[i]);
890  if (NULL == pixeltypetext) break;
891  pixeltype = text_to_cstring(pixeltypetext);
892 
893  /* trim string */
894  pixeltype = rtpg_trim(pixeltype);
895  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: pixeltype is '%s'", pixeltype);
896  break;
897  }
898 
899  if (strlen(pixeltype)) {
900  pixtype = rt_pixtype_index_from_name(pixeltype);
901  if (pixtype == PT_END) {
902 
903  pfree(pixtypes);
904 
905  lwgeom_free(geom);
906  PG_FREE_IF_COPY(gser, 0);
907 
908  elog(ERROR, "RASTER_asRaster: Invalid pixel type provided: %s", pixeltype);
909  PG_RETURN_NULL();
910  }
911 
912  pixtypes[j] = pixtype;
913  j++;
914  }
915  }
916 
917  if (j > 0) {
918  /* trim allocation */
919  pixtypes = repalloc(pixtypes, j * sizeof(rt_pixtype));
920  pixtypes_len = j;
921  }
922  else {
923  pfree(pixtypes);
924  pixtypes = NULL;
925  pixtypes_len = 0;
926  }
927  }
928  }
929 #if POSTGIS_DEBUG_LEVEL > 0
930  for (uint32_t u = 0; u < pixtypes_len; u++)
931  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: pixtypes[%u] = %u", i, pixtypes[i]);
932 #endif
933 
934  /* value */
935  if (!PG_ARGISNULL(6)) {
936  array = PG_GETARG_ARRAYTYPE_P(6);
937  etype = ARR_ELEMTYPE(array);
938  get_typlenbyvalalign(etype, &typlen, &typbyval, &typalign);
939 
940  switch (etype) {
941  case FLOAT4OID:
942  case FLOAT8OID:
943  break;
944  default:
945 
946  if (pixtypes_len) pfree(pixtypes);
947 
948  lwgeom_free(geom);
949  PG_FREE_IF_COPY(gser, 0);
950 
951  elog(ERROR, "RASTER_asRaster: Invalid data type for value");
952  PG_RETURN_NULL();
953  break;
954  }
955 
956  deconstruct_array(array, etype, typlen, typbyval, typalign, &e,
957  &nulls, &n);
958 
959  if (n) {
960  values = (double *) palloc(sizeof(double) * n);
961  for (i = 0, j = 0; i < n; i++) {
962  if (nulls[i]) {
963  values[j++] = 1;
964  continue;
965  }
966 
967  switch (etype) {
968  case FLOAT4OID:
969  values[j] = (double) DatumGetFloat4(e[i]);
970  break;
971  case FLOAT8OID:
972  values[j] = (double) DatumGetFloat8(e[i]);
973  break;
974  }
975  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: values[%d] = %f", j, values[j]);
976 
977  j++;
978  }
979 
980  if (j > 0) {
981  /* trim allocation */
982  values = repalloc(values, j * sizeof(double));
983  values_len = j;
984  }
985  else {
986  pfree(values);
987  values = NULL;
988  values_len = 0;
989  }
990  }
991  }
992 #if POSTGIS_DEBUG_LEVEL > 0
993  for (uint32_t u = 0; u < values_len; u++)
994  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: values[%u] = %f", i, values[i]);
995 #endif
996 
997  /* nodataval */
998  if (!PG_ARGISNULL(7)) {
999  array = PG_GETARG_ARRAYTYPE_P(7);
1000  etype = ARR_ELEMTYPE(array);
1001  get_typlenbyvalalign(etype, &typlen, &typbyval, &typalign);
1002 
1003  switch (etype) {
1004  case FLOAT4OID:
1005  case FLOAT8OID:
1006  break;
1007  default:
1008 
1009  if (pixtypes_len) pfree(pixtypes);
1010  if (values_len) pfree(values);
1011 
1012  lwgeom_free(geom);
1013  PG_FREE_IF_COPY(gser, 0);
1014 
1015  elog(ERROR, "RASTER_asRaster: Invalid data type for nodataval");
1016  PG_RETURN_NULL();
1017  break;
1018  }
1019 
1020  deconstruct_array(array, etype, typlen, typbyval, typalign, &e,
1021  &nulls, &n);
1022 
1023  if (n) {
1024  nodatavals = (double *) palloc(sizeof(double) * n);
1025  hasnodatas = (uint8_t *) palloc(sizeof(uint8_t) * n);
1026  for (i = 0, j = 0; i < n; i++) {
1027  if (nulls[i]) {
1028  hasnodatas[j] = 0;
1029  nodatavals[j] = 0;
1030  j++;
1031  continue;
1032  }
1033 
1034  hasnodatas[j] = 1;
1035  switch (etype) {
1036  case FLOAT4OID:
1037  nodatavals[j] = (double) DatumGetFloat4(e[i]);
1038  break;
1039  case FLOAT8OID:
1040  nodatavals[j] = (double) DatumGetFloat8(e[i]);
1041  break;
1042  }
1043  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: hasnodatas[%d] = %d", j, hasnodatas[j]);
1044  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: nodatavals[%d] = %f", j, nodatavals[j]);
1045 
1046  j++;
1047  }
1048 
1049  if (j > 0) {
1050  /* trim allocation */
1051  nodatavals = repalloc(nodatavals, j * sizeof(double));
1052  hasnodatas = repalloc(hasnodatas, j * sizeof(uint8_t));
1053  nodatavals_len = j;
1054  }
1055  else {
1056  pfree(nodatavals);
1057  pfree(hasnodatas);
1058  nodatavals = NULL;
1059  hasnodatas = NULL;
1060  nodatavals_len = 0;
1061  }
1062  }
1063  }
1064 #if POSTGIS_DEBUG_LEVEL > 0
1065  for (uint32_t u = 0; u < nodatavals_len; u++)
1066  {
1067  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: hasnodatas[%u] = %d", u, hasnodatas[u]);
1068  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: nodatavals[%u] = %f", u, nodatavals[u]);
1069  }
1070 #endif
1071 
1072  /* upperleftx */
1073  if (!PG_ARGISNULL(8)) {
1074  ulw[0] = PG_GETARG_FLOAT8(8);
1075  ul_xw = &ulw[0];
1076  }
1077 
1078  /* upperlefty */
1079  if (!PG_ARGISNULL(9)) {
1080  ulw[1] = PG_GETARG_FLOAT8(9);
1081  ul_yw = &ulw[1];
1082  }
1083  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: upperleft (x, y) = %f, %f", ulw[0], ulw[1]);
1084 
1085  /* gridx */
1086  if (!PG_ARGISNULL(10)) {
1087  gridw[0] = PG_GETARG_FLOAT8(10);
1088  grid_xw = &gridw[0];
1089  }
1090 
1091  /* gridy */
1092  if (!PG_ARGISNULL(11)) {
1093  gridw[1] = PG_GETARG_FLOAT8(11);
1094  grid_yw = &gridw[1];
1095  }
1096  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: grid (x, y) = %f, %f", gridw[0], gridw[1]);
1097 
1098  /* check dependent variables */
1099  haserr = 0;
1100  do {
1101  /* only part of scale provided */
1102  if (
1103  (scale_x == NULL && scale_y != NULL) ||
1104  (scale_x != NULL && scale_y == NULL)
1105  ) {
1106  elog(NOTICE, "Values must be provided for both X and Y of scale if one is specified");
1107  haserr = 1;
1108  break;
1109  }
1110 
1111  /* only part of dimension provided */
1112  if (
1113  (dim_x == NULL && dim_y != NULL) ||
1114  (dim_x != NULL && dim_y == NULL)
1115  ) {
1116  elog(NOTICE, "Values must be provided for both width and height if one is specified");
1117  haserr = 1;
1118  break;
1119  }
1120 
1121  /* scale and dimension provided */
1122  if (
1123  (scale_x != NULL && scale_y != NULL) &&
1124  (dim_x != NULL && dim_y != NULL)
1125  ) {
1126  elog(NOTICE, "Values provided for X and Y of scale and width and height. Using the width and height");
1127  scale_x = NULL;
1128  scale_y = NULL;
1129  break;
1130  }
1131 
1132  /* neither scale or dimension provided */
1133  if (
1134  (scale_x == NULL && scale_y == NULL) &&
1135  (dim_x == NULL && dim_y == NULL)
1136  ) {
1137  elog(NOTICE, "Values must be provided for X and Y of scale or width and height");
1138  haserr = 1;
1139  break;
1140  }
1141 
1142  /* only part of upper-left provided */
1143  if (
1144  (ul_xw == NULL && ul_yw != NULL) ||
1145  (ul_xw != NULL && ul_yw == NULL)
1146  ) {
1147  elog(NOTICE, "Values must be provided for both X and Y when specifying the upper-left corner");
1148  haserr = 1;
1149  break;
1150  }
1151 
1152  /* only part of alignment provided */
1153  if (
1154  (grid_xw == NULL && grid_yw != NULL) ||
1155  (grid_xw != NULL && grid_yw == NULL)
1156  ) {
1157  elog(NOTICE, "Values must be provided for both X and Y when specifying the alignment");
1158  haserr = 1;
1159  break;
1160  }
1161 
1162  /* upper-left and alignment provided */
1163  if (
1164  (ul_xw != NULL && ul_yw != NULL) &&
1165  (grid_xw != NULL && grid_yw != NULL)
1166  ) {
1167  elog(NOTICE, "Values provided for both X and Y of upper-left corner and alignment. Using the values of upper-left corner");
1168  grid_xw = NULL;
1169  grid_yw = NULL;
1170  break;
1171  }
1172  }
1173  while (0);
1174 
1175  if (haserr) {
1176  if (pixtypes_len) pfree(pixtypes);
1177  if (values_len) pfree(values);
1178  if (nodatavals_len) {
1179  pfree(nodatavals);
1180  pfree(hasnodatas);
1181  }
1182 
1183  lwgeom_free(geom);
1184  PG_FREE_IF_COPY(gser, 0);
1185 
1186  PG_RETURN_NULL();
1187  }
1188 
1189  /* skewx */
1190  if (!PG_ARGISNULL(12)) {
1191  skew[0] = PG_GETARG_FLOAT8(12);
1192  if (FLT_NEQ(skew[0], 0.0))
1193  skew_x = &skew[0];
1194  }
1195 
1196  /* skewy */
1197  if (!PG_ARGISNULL(13)) {
1198  skew[1] = PG_GETARG_FLOAT8(13);
1199  if (FLT_NEQ(skew[1], 0.0))
1200  skew_y = &skew[1];
1201  }
1202  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: skew (x, y) = %f, %f", skew[0], skew[1]);
1203 
1204  /* all touched */
1205  if (!PG_ARGISNULL(14) && PG_GETARG_BOOL(14) == TRUE) {
1206  if (options_len == 0) {
1207  options_len = 1;
1208  options = (char **) palloc(sizeof(char *) * options_len);
1209  }
1210  else {
1211  options_len++;
1212  options = (char **) repalloc(options, sizeof(char *) * options_len);
1213  }
1214 
1215  options[options_len - 1] = palloc(sizeof(char*) * (strlen("ALL_TOUCHED=TRUE") + 1));
1216  strcpy(options[options_len - 1], "ALL_TOUCHED=TRUE");
1217  }
1218 
1219  if (options_len) {
1220  options_len++;
1221  options = (char **) repalloc(options, sizeof(char *) * options_len);
1222  options[options_len - 1] = NULL;
1223  }
1224 
1225  /* get geometry's srid */
1226  srid = gserialized_get_srid(gser);
1227 
1228  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: srid = %d", srid);
1229  if (clamp_srid(srid) != SRID_UNKNOWN) {
1230  srs = rtpg_getSR(srid);
1231  if (NULL == srs) {
1232 
1233  if (pixtypes_len) pfree(pixtypes);
1234  if (values_len) pfree(values);
1235  if (nodatavals_len) {
1236  pfree(hasnodatas);
1237  pfree(nodatavals);
1238  }
1239  if (options_len) pfree(options);
1240 
1241  lwgeom_free(geom);
1242  PG_FREE_IF_COPY(gser, 0);
1243 
1244  elog(ERROR, "RASTER_asRaster: Could not find srtext for SRID (%d)", srid);
1245  PG_RETURN_NULL();
1246  }
1247  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: srs is %s", srs);
1248  }
1249  else
1250  srs = NULL;
1251 
1252  /* determine number of bands */
1253  /* MIN macro is from GDAL's cpl_port.h */
1254  num_bands = MIN(pixtypes_len, values_len);
1255  num_bands = MIN(num_bands, nodatavals_len);
1256  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: pixtypes_len = %d", pixtypes_len);
1257  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: values_len = %d", values_len);
1258  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: nodatavals_len = %d", nodatavals_len);
1259  POSTGIS_RT_DEBUGF(3, "RASTER_asRaster: num_bands = %d", num_bands);
1260 
1261  /* warn of imbalanced number of band elements */
1262  if (!(
1263  (pixtypes_len == values_len) &&
1264  (values_len == nodatavals_len)
1265  )) {
1266  elog(
1267  NOTICE,
1268  "Imbalanced number of values provided for pixeltype (%d), value (%d) and nodataval (%d). Using the first %d values of each parameter",
1269  pixtypes_len,
1270  values_len,
1271  nodatavals_len,
1272  num_bands
1273  );
1274  }
1275 
1276  /* get wkb of geometry */
1277  POSTGIS_RT_DEBUG(3, "RASTER_asRaster: getting wkb of geometry");
1278  wkb = lwgeom_to_wkb_varlena(geom, variant);
1279  lwgeom_free(geom);
1280  PG_FREE_IF_COPY(gser, 0);
1281 
1282  /* rasterize geometry */
1283  POSTGIS_RT_DEBUG(3, "RASTER_asRaster: rasterizing geometry");
1284  /* use nodatavals for the init parameter */
1285  rast = rt_raster_gdal_rasterize((unsigned char *)wkb->data,
1286  LWSIZE_GET(wkb->size) - LWVARHDRSZ,
1287  srs,
1288  num_bands,
1289  pixtypes,
1290  nodatavals,
1291  values,
1292  nodatavals,
1293  hasnodatas,
1294  dim_x,
1295  dim_y,
1296  scale_x,
1297  scale_y,
1298  ul_xw,
1299  ul_yw,
1300  grid_xw,
1301  grid_yw,
1302  skew_x,
1303  skew_y,
1304  options);
1305 
1306  if (pixtypes_len) pfree(pixtypes);
1307  if (values_len) pfree(values);
1308  if (nodatavals_len) {
1309  pfree(hasnodatas);
1310  pfree(nodatavals);
1311  }
1312  if (options_len) pfree(options);
1313 
1314  if (!rast) {
1315  elog(ERROR, "RASTER_asRaster: Could not rasterize geometry");
1316  PG_RETURN_NULL();
1317  }
1318 
1319  /* add target srid */
1320  rt_raster_set_srid(rast, srid);
1321 
1322  pgrast = rt_raster_serialize(rast);
1323  rt_raster_destroy(rast);
1324 
1325  if (NULL == pgrast) PG_RETURN_NULL();
1326 
1327  POSTGIS_RT_DEBUG(3, "RASTER_asRaster: done");
1328 
1329  SET_VARSIZE(pgrast, pgrast->size);
1330  PG_RETURN_POINTER(pgrast);
1331 }
variant
static uint8_t variant
Definition: cu_in_twkb.c:26
TRUE
#define TRUE
Definition: dbfopen.c:73
gserialized_get_srid
int32_t gserialized_get_srid(const GSERIALIZED *g)
Extract the SRID from the serialized form (it is packed into three bytes so this is a handy function)...
Definition: gserialized.c:126
lwgeom_from_gserialized
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
Definition: gserialized.c:239
lwgeom_ndims
int lwgeom_ndims(const LWGEOM *geom)
Return the number of dimensions (2, 3, 4) in a geometry.
Definition: lwgeom.c:938
LWVARHDRSZ
#define LWVARHDRSZ
Definition: liblwgeom.h:325
lwgeom_free
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1138
LWSIZE_GET
#define LWSIZE_GET(varsize)
Macro for reading the size from the GSERIALIZED size attribute.
Definition: liblwgeom.h:338
SRID_UNKNOWN
#define SRID_UNKNOWN
Unknown SRID value.
Definition: liblwgeom.h:229
lwgeom_to_wkb_varlena
lwvarlena_t * lwgeom_to_wkb_varlena(const LWGEOM *geom, uint8_t variant)
Definition: lwout_wkb.c:851
WKB_SFSQL
#define WKB_SFSQL
Definition: liblwgeom.h:2147
clamp_srid
int32_t clamp_srid(int32_t srid)
Return a valid SRID from an arbitrary integer Raises a notice if what comes out is different from wha...
Definition: lwutil.c:333
lwgeom_force_2d
LWGEOM * lwgeom_force_2d(const LWGEOM *geom)
Strip out the Z/M components of an LWGEOM.
Definition: lwgeom.c:776
FLT_NEQ
#define FLT_NEQ(x, y)
Definition: librtcore.h:2234
rt_pixtype_index_from_name
rt_pixtype rt_pixtype_index_from_name(const char *pixname)
Definition: rt_pixel.c:80
rt_raster_destroy
void rt_raster_destroy(rt_raster raster)
Release memory associated to a raster.
Definition: rt_raster.c:82
rt_pixtype
rt_pixtype
Definition: librtcore.h:185
PT_END
@ PT_END
Definition: librtcore.h:197
PT_64BF
@ PT_64BF
Definition: librtcore.h:196
rt_raster_new
rt_raster rt_raster_new(uint32_t width, uint32_t height)
Construct a raster with given dimensions.
Definition: rt_raster.c:48
rt_raster_serialize
void * rt_raster_serialize(rt_raster raster)
Return this raster in serialized form.
Definition: rt_serialize.c:521
rt_raster_gdal_rasterize
rt_raster rt_raster_gdal_rasterize(const unsigned char *wkb, uint32_t wkb_len, const char *srs, uint32_t num_bands, rt_pixtype *pixtype, double *init, double *value, double *nodata, uint8_t *hasnodata, int *width, int *height, double *scale_x, double *scale_y, double *ul_xw, double *ul_yw, double *grid_xw, double *grid_yw, double *skew_x, double *skew_y, char **options)
Return a raster of the provided geometry.
Definition: rt_raster.c:2491
rt_raster_set_srid
void rt_raster_set_srid(rt_raster raster, int32_t srid)
Set raster's SRID.
Definition: rt_raster.c:363
lwgeom_is_empty
static int lwgeom_is_empty(const LWGEOM *geom)
Return true or false depending on whether a geometry is an "empty" geometry (no vertices members)
Definition: lwinline.h:203
rtpg_getSR
char * rtpg_getSR(int32_t srid)
Definition: rtpg_internal.c:282
rtpg_trim
char * rtpg_trim(const char *input)
Definition: rtpg_internal.c:226
POSTGIS_RT_DEBUG
#define POSTGIS_RT_DEBUG(level, msg)
Definition: rtpostgis.h:61
POSTGIS_RT_DEBUGF
#define POSTGIS_RT_DEBUGF(level, msg,...)
Definition: rtpostgis.h:65
MIN
#define MIN(a, b)
Definition: shpopen.c:64
lwvarlena_t::size
uint32_t size
Definition: liblwgeom.h:321
lwvarlena_t::data
char data[]
Definition: liblwgeom.h:322
lwvarlena_t
Definition: liblwgeom.h:320
rt_raster_serialized_t::size
uint32_t size
Definition: librtcore.h:2253
rt_raster_serialized_t
Struct definitions.
Definition: librtcore.h:2251
rt_raster_t
Definition: librtcore.h:2285

References clamp_srid(), lwvarlena_t::data, FLT_NEQ, gserialized_get_srid(), lwgeom_force_2d(), lwgeom_free(), lwgeom_from_gserialized(), lwgeom_is_empty(), lwgeom_ndims(), lwgeom_to_wkb_varlena(), LWSIZE_GET, LWVARHDRSZ, MIN, POSTGIS_RT_DEBUG, POSTGIS_RT_DEBUGF, PT_64BF, PT_END, rtpixdump::rast, rt_pixtype_index_from_name(), rt_raster_destroy(), rt_raster_gdal_rasterize(), rt_raster_new(), rt_raster_serialize(), rt_raster_set_srid(), rtpg_getSR(), rtpg_trim(), lwvarlena_t::size, rt_raster_serialized_t::size, rt_raster_serialized_t::srid, SRID_UNKNOWN, TRUE, variant, and WKB_SFSQL.

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