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{
"name": "raster_value",
"type": "function",
"description": "Returns the raster value found at the provided point.",
"arguments": [ {"arg":"layer","description":"the name or id of a raster layer"},
{"arg":"band","description":"the band number to sample the value from."},
{"arg":"point","description":"point geometry (for multipart geometries having more than one part, a null value will be returned)"}],
"examples": [ { "expression":"raster_value('dem', 1, make_point(1,1))", "returns":"25"}]
}