huracanpy.calc.azimuth#

huracanpy.calc.azimuth(lon, lat, track_id=None, ellps='WGS84', centering='forward')[source]#

Compute azimuth between points using geodesic calculation.

Parameters:

  • lon (xarray.DataArray) – Longitude and latitude points

  • lat (xarray.DataArray) – Longitude and latitude points

  • track_id (array_like, optional) – Track ID at each point

  • ellps (str, optional) – The definition of the globe to use for the geodesic calculation (see pyproj.Geod). Default is “WGS84”.

  • centering (str, optional) –

    • “forward” gives the angle based on the track point and the following track point. The last point of each track will be NaN

    • ”backward” gives the angle based on the track point and the previous track point. The first point of each track will be NaN

    • ”centre” gives the angle based on the centred difference of track points. The first and last points of each track will be NaN

    • ”adaptive” gives the same as centred, but fills in the first point of each track with the forward difference, and the last point of each track with the backward difference

Returns:

Azimuth in degrees.

0° corresponds to northward (or stagnating); 90° corresponds to eastward; 180° corresponds to southward; -90° corresponds to westwards.

Return type:

xarray.DataArray