raster
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## Name

raster — raster spatial data type.

## Description

raster is a spatial data type used to represent raster data such as those imported from JPEGs, TIFFs, PNGs, digital elevation models. Each raster has 1 or more bands each having a set of pixel values. Rasters can be georeferenced.

Requires PostGIS be compiled with GDAL support. Currently rasters can be implicitly converted to geometry type, but the conversion returns the ST_ConvexHull of the raster. This auto casting may be removed in the near future so don't rely on it.

## Casting Behavior

This section lists the automatic as well as explicit casts allowed for this data type

Cast To | Behavior
geometry | automatic

## See Also

Chapter 12, Raster Reference

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