gdal_contour

Create contour lines and polygons from a digital elevation model.

TLDR

Create a vector dataset with contour lines spread over an 100-meter [i]nterval while [a]ttributing the elevation property as "ele"

$ gdal_contour -a [ele] -i [100.0] [path/to/input.tif] [path/to/output.gpkg]
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Create a vector dataset with [p]olygons spread over an 100-meter [i]nterval
$ gdal_contour -i [100.0] -p [path/to/input.tif] [path/to/output.gpkg]
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