earthkit.meteo.wind.fieldlist.polar_to_xy

earthkit.meteo.wind.fieldlist.polar_to_xy(magnitude, direction, convention='meteo')

Convert wind/vector data from polar representation to xy representation.

Parameters:

  • magnitude (FieldList|Field) – Speed/magnitude of the vector.

  • direction (FieldList|Field) – Direction of the vector (degrees). Must be of the same type as magnitude (FieldList or Field) and have the same number of fields as magnitude.

  • convention (str) –

    Specify how direction is interpreted. The possible values are as follows:

    • ”meteo”: direction is the meteorological wind direction (see direction() for explanation)

    • ”polar”: direction is the angle measured anti-clockwise from the x axis (East/right) to the vector

Returns:

  • FieldList|Field – X vector component (same units as magnitude). The result has the same type as the input (FieldList or Field).

  • FieldList|Field – Y vector component (same units as magnitude). The result has the same type as the input (FieldList or Field).

Return type:

tuple[earthkit.data.FieldList | earthkit.data.Field, earthkit.data.FieldList | earthkit.data.Field]

Notes

In the target xy representation the x axis points East while the y axis points North.