transformation.spatial — Spatial

The transformation.spatial module contains wrappers around pyproj for spatial transformations.

New in version 0.1.0.

autocnet.transformation.spatial.oc2og(lon, lat, semi_major, semi_minor)

Converts planetocentric latitude to planetographic latitude using pyproj pipeline.

Parameters

• lon (float) – longitude 0 to 360 domain (in degrees)

• lat (float) – planetocentric latitude (in degrees)

• semi_major (float) – Radius from the center of the body to the equator

• semi_minor (float) – Radius from the center of the body to the pole

Returns

• lon (float) – longitude (in degrees)

• lat (float) – planetographic latitude (in degrees)

autocnet.transformation.spatial.og2oc(lon, lat, semi_major, semi_minor)

Converts planetographic latitude to planetocentric latitude using pyproj pipeline.

Parameters

• lon (float) – longitude 0 to 360 domain (in degrees)

• lat (float) – planetographic latitude (in degrees)

• semi_major (float) – Radius from the center of the body to the equator

• semi_minor (float) – Radius from the center of the body to the pole

Returns

• lon (float) – longitude (in degrees)

• lat (float) – planetocentric latitude (in degrees)

autocnet.transformation.spatial.reproject(record, semi_major, semi_minor, source_proj, dest_proj, **kwargs)

Thin wrapper around PyProj’s Transform() function to transform 1 or more three-dimensional point from one coordinate system to another. If converting between Cartesian body-centered body-fixed (BCBF) coordinates and Longitude/Latitude/Altitude coordinates, the values input for semi-major and semi-minor axes determine whether latitudes are planetographic or planetocentric and determine the shape of the datum for altitudes. If semi_major == semi_minor, then latitudes are interpreted/created as planetocentric and altitudes are interpreted/created as referenced to a spherical datum. If semi_major != semi_minor, then latitudes are interpreted/created as planetographic and altitudes are interpreted/created as referenced to an ellipsoidal datum.

Parameters

• record (object) – Pandas series object

• semi_major (float) – Radius from the center of the body to the equater

• semi_minor (float) – Radius from the pole to the center of mass

• source_proj (str) – Pyproj string that defines a projection space ie. ‘geocent’

• dest_proj (str) – Pyproj string that defines a project space ie. ‘latlon’

Returns

Transformed coordinates as y, x, z

Return type

list