This function sets the color table in JSON format for a specified band of a raster object.
Syntax
raster ST_SetColorTable(raster rast, integer band_sn, cstring clb);
Parameters
Parameter | Description |
---|---|
rast | The raster object. |
band_sn | The sequence number of the band, which starts from 0. |
clb | The color table in JSON format. For more information, see ST_ColorTable. |
Examples
update rast set rast=ST_SetColorTable(rast,0,
'{"compsCount":4,
"entries":[
{"value":0,"c1":0,"c2":0,"c3":0,"c4":255},
{"value":1,"c1":0,"c2":0,"c3":85,"c4":255},
{"value":2,"c1":0,"c2":0,"c3":170,"c4":255}
]
}');
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(1 row)