RS_GeoReference

Returns the georeference metadata of raster as a string in GDAL or ESRI format as commonly seen in a world file. Default is GDAL if not specified. Both formats output six lines: scalex, skewy, skewx, scaley, upperleftx, upperlefty. In GDAL format the upper-left coordinates refer to the corner of the upper-left pixel, while in ESRI format they are shifted to the center of the upper-left pixel.

Usage

utf8 RS_GeoReference(rast: raster)
utf8 RS_GeoReference(rast: raster, format: utf8)

Arguments

• rast (raster): Input raster
• format (utf8): Output format: ‘GDAL’ (default; alias ‘PIXEL’) reports the upper-left corner of the upper-left pixel; ‘ESRI’ (alias ‘NODE’) shifts the coordinates to the center of the upper-left pixel. The center shift maps through the full affine transform, so it is exact for skewed (rotated) rasters too.

See Coordinate Reference Systems for how SedonaDB represents and compares CRS.

Examples

SELECT RS_GeoReference(RS_Example());

┌───────────────────────────────┐
│ rs_georeference(rs_example()) │
│              utf8             │
╞═══════════════════════════════╡
│ 2.0000000000…                 │
└───────────────────────────────┘