PostGIS  2.2.7dev-r@@SVN_REVISION@@
Datum RASTER_getXScale ( PG_FUNCTION_ARGS  )

Definition at line 194 of file rtpg_raster_properties.c.

References rtrowdump::raster, rt_raster_deserialize(), rt_raster_destroy(), rt_raster_get_x_scale(), TRUE, and window::xsize.

195 {
196  rt_pgraster *pgraster;
198  double xsize;
199 
200  if (PG_ARGISNULL(0)) PG_RETURN_NULL();
201  pgraster = (rt_pgraster *) PG_DETOAST_DATUM_SLICE(PG_GETARG_DATUM(0), 0, sizeof(struct rt_raster_serialized_t));
202 
203  raster = rt_raster_deserialize(pgraster, TRUE);
204  if ( ! raster ) {
205  PG_FREE_IF_COPY(pgraster, 0);
206  elog(ERROR, "RASTER_getXScale: Could not deserialize raster");
207  PG_RETURN_NULL();
208  }
209 
210  xsize = rt_raster_get_x_scale(raster);
211 
212  rt_raster_destroy(raster);
213  PG_FREE_IF_COPY(pgraster, 0);
214 
215  PG_RETURN_FLOAT8(xsize);
216 }
tuple raster
Be careful!! Zeros function's input parameter can be a (height x width) array, not (width x height): ...
Definition: rtrowdump.py:121
xsize
Definition: window.py:68
double rt_raster_get_x_scale(rt_raster raster)
Get scale X in projection units.
Definition: rt_raster.c:150
void rt_raster_destroy(rt_raster raster)
Release memory associated to a raster.
Definition: rt_raster.c:82
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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