RASTER_getYUpperLeft()

Datum RASTER_getYUpperLeft

(

PG_FUNCTION_ARGS

)

Definition at line 336 of file rtpg_raster_properties.c.

{
    rt_pgraster *pgraster;
    rt_raster raster;
    double yul;
 
    if (PG_ARGISNULL(0)) PG_RETURN_NULL();
    pgraster = (rt_pgraster *) PG_DETOAST_DATUM_SLICE(PG_GETARG_DATUM(0), 0, sizeof(struct rt_raster_serialized_t));
 
    raster = rt_raster_deserialize(pgraster, TRUE);
    if ( ! raster ) {
        PG_FREE_IF_COPY(pgraster, 0);
        elog(ERROR, "RASTER_getYUpperLeft: Could not deserialize raster");
        PG_RETURN_NULL();
    }
 
    yul = rt_raster_get_y_offset(raster);
 
    rt_raster_destroy(raster);
    PG_FREE_IF_COPY(pgraster, 0);
 
    PG_RETURN_FLOAT8(yul);
}

References rtrowdump::raster, rt_raster_deserialize(), rt_raster_destroy(), rt_raster_get_y_offset(), and TRUE.

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