lazer.geo

Functions for routine geospatial operations.

get_fiona_drivers(writable_only=False)

Returns a list of supported vector drivers for fiona.

Source code in lazer/geo.py

def get_fiona_drivers(writable_only: bool = False) -> list:
    """Returns a list of supported vector drivers for fiona."""
    if writable_only:
        drivers = []
        for key, value in fio.supported_drivers.items():
            if "w" in value:
                drivers.append(key)
    else:
        drivers = list(fio.supported_drivers.keys())

    return drivers

utm_zone(lon, lat)

Computes the UTM zone and hemisphere based on a WGS84 (lat, lon) pair

Parameters:

Name	Type	Description	Default
lon	float	longitude (x) in WGS-84 coordinates	required
lat	float	latitude (y) in WGS-84 coordinates	required

Returns:

Type	Description
(zone, hemisphere)	[utm_zone (1-60), hemisphere (N/S)]

Source code in lazer/geo.py

def utm_zone(lon: float, lat: float):
    """Computes the UTM zone and hemisphere based on a WGS84 (lat, lon) pair

    Args:
        lon: longitude (x) in WGS-84 coordinates
        lat: latitude (y) in WGS-84 coordinates

    Returns:
        (zone, hemisphere): [utm_zone (1-60), hemisphere (N/S)]
    """
    # zone is based on longitude, hemisphere on latitude
    zone = int((np.floor((lon + 180) / 6) % 60) + 1)
    hemisphere = "N" if lat >= 0.0 else "S"

    return (zone, hemisphere)