utm-zone

Find the UTM zone for your GeoJSON.

Provided a GeoJSON object (with coordinates using WGS84), calculate the Proj.4 definition or EPSG code for a suitable UTM zone for this geometry. This will only work if the geometry has limited geographic size, so that it can fit into a single UTM zone.

Note that this module does not do any reprojection of coordinates, you might want to look at pyproj for that.

For a rough overview of how the UTM zone is calculated, have a look at https://gis.stackexchange.com/a/190209/467.

See also https://github.com/perliedman/utm-zone for a JavaScript version of this module.

API

epsg(geojson)

Returns the EPSG code for the UTM zone of the provided GeoJSON object.

proj(geojson)

Returns the Proj.4 string for the UTM zone of the provided GeoJSON object.