st_grayscale
st_grayscale in PostGIS Raster, not yet mapped to an operation.
| Engine | PostGIS Raster |
|---|---|
| Tool name | st_grayscale |
| Interface | sql |
| Implements | Not stated |
| Documentation | Not stated |
| Effects | Not stated |
| Notes | Not stated |
| Status | active |
Parameters
| Name | Type | Required | Default | Choices | Note |
|---|---|---|---|---|---|
rast | raster | no | Not stated | Not stated | Not stated |
redband | integer | no | 1 | Not stated | Not stated |
greenband | integer | no | 2 | Not stated | Not stated |
blueband | integer | no | 3 | Not stated | Not stated |
extenttype | text | no | 'INTERSECTION'::text | Not stated | Not stated |
rastbandargset | rastbandarg[] | no | Not stated | Not stated | Not stated |
SQL overloads
-
st_grayscale(rast raster, redband integer DEFAULT 1, greenband integer DEFAULT 2, blueband integer DEFAULT 3, extenttype text DEFAULT 'INTERSECTION'::text) → raster -
st_grayscale(rastbandargset rastbandarg[], extenttype text DEFAULT 'INTERSECTION'::text) → raster
Harvested by the postgis harvester from engine version
3.7.0. Names can change when an engine is harvested again.