RS_IsEmpty

Returns true when the raster has zero visible volume — some dimension has length 0, so it holds no cells. This is visible-volume emptiness, not byte-emptiness: a lazy raster whose pixels are resolved on demand carries no bytes but is not empty.

Usage

boolean RS_IsEmpty(rast: raster)

Arguments

• rast (raster): Input raster

Examples

SELECT RS_IsEmpty(RS_Example());

┌──────────────────────────┐
│ rs_isempty(rs_example()) │
│          boolean         │
╞══════════════════════════╡
│ false                    │
└──────────────────────────┘