Function UtmProjection.zone

Explicit UTM zone.

UtmZone zone() const pure nothrow @nogc @property @safe;

Example

Example reading the zone. 

import geodesy;
const projection = UtmProjection!double.fromZone(
    wgs84!double(), UtmZone.fromNumber(33), UtmHemisphere.north);
assert(projection.zone.number == 33);