PostGIS  2.3.8dev-r@@SVN_REVISION@@

◆ RASTER_getYScale()

Datum RASTER_getYScale ( PG_FUNCTION_ARGS  )

Definition at line 222 of file rtpg_raster_properties.c.

References PG_FUNCTION_INFO_V1(), rtrowdump::raster, RASTER_getXSkew(), rt_raster_deserialize(), rt_raster_destroy(), rt_raster_get_y_scale(), TRUE, and window::ysize.

Referenced by RASTER_getXScale().

223 {
224  rt_pgraster *pgraster;
226  double ysize;
227 
228  if (PG_ARGISNULL(0)) PG_RETURN_NULL();
229  pgraster = (rt_pgraster *) PG_DETOAST_DATUM_SLICE(PG_GETARG_DATUM(0), 0, sizeof(struct rt_raster_serialized_t));
230 
231  raster = rt_raster_deserialize(pgraster, TRUE);
232  if ( ! raster ) {
233  PG_FREE_IF_COPY(pgraster, 0);
234  elog(ERROR, "RASTER_getYScale: Could not deserialize raster");
235  PG_RETURN_NULL();
236  }
237 
238  ysize = rt_raster_get_y_scale(raster);
239 
240  rt_raster_destroy(raster);
241  PG_FREE_IF_COPY(pgraster, 0);
242 
243  PG_RETURN_FLOAT8(ysize);
244 }
raster
Be careful!! Zeros function's input parameter can be a (height x width) array, not (width x height): ...
Definition: rtrowdump.py:121
ysize
Definition: window.py:69
void rt_raster_destroy(rt_raster raster)
Release memory associated to a raster.
Definition: rt_raster.c:82
double rt_raster_get_y_scale(rt_raster raster)
Get scale Y in projection units.
Definition: rt_raster.c:159
Struct definitions.
Definition: librtcore.h:2213
#define TRUE
Definition: dbfopen.c:169
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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