PostGIS  2.3.8dev-r@@SVN_REVISION@@

◆ RASTER_setScale()

Datum RASTER_setScale ( PG_FUNCTION_ARGS  )

Definition at line 917 of file rtpg_raster_properties.c.

References FALSE, PG_FUNCTION_INFO_V1(), rtrowdump::raster, RASTER_setScaleXY(), rt_raster_deserialize(), rt_raster_destroy(), rt_raster_serialize(), rt_raster_set_scale(), and rt_raster_serialized_t::size.

Referenced by RASTER_setSRID().

918 {
919  rt_pgraster *pgraster = NULL;
920  rt_pgraster *pgrtn = NULL;
922  double size = PG_GETARG_FLOAT8(1);
923 
924  if (PG_ARGISNULL(0))
925  PG_RETURN_NULL();
926  pgraster = (rt_pgraster *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
927  raster = rt_raster_deserialize(pgraster, FALSE);
928  if (!raster) {
929  PG_FREE_IF_COPY(pgraster, 0);
930  elog(ERROR, "RASTER_setScale: Could not deserialize raster");
931  PG_RETURN_NULL();
932  }
933 
934  rt_raster_set_scale(raster, size, size);
935 
936  pgrtn = rt_raster_serialize(raster);
937  rt_raster_destroy(raster);
938  PG_FREE_IF_COPY(pgraster, 0);
939  if (!pgrtn)
940  PG_RETURN_NULL();
941 
942  SET_VARSIZE(pgrtn, pgrtn->size);
943  PG_RETURN_POINTER(pgrtn);
944 }
void * rt_raster_serialize(rt_raster raster)
Return this raster in serialized form.
Definition: rt_serialize.c:521
raster
Be careful!! Zeros function's input parameter can be a (height x width) array, not (width x height): ...
Definition: rtrowdump.py:121
void rt_raster_set_scale(rt_raster raster, double scaleX, double scaleY)
Set scale in projection units.
Definition: rt_raster.c:137
void rt_raster_destroy(rt_raster raster)
Release memory associated to a raster.
Definition: rt_raster.c:82
#define FALSE
Definition: dbfopen.c:168
Struct definitions.
Definition: librtcore.h:2213
rt_raster rt_raster_deserialize(void *serialized, int header_only)
Return a raster from a serialized form.
Definition: rt_serialize.c:717
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