Magnetic

pyBADA Magnetic declination module Developped @EUROCONTROL (EIH) 2024

class pyBADA.magnetic.Grid(inputJSON=None)[source]

Bases: object

This class provides methods to calculate the magnetic declination at a given latitude and longitude using pre-loaded grid data.

The grid data is loaded from a JSON file, and the closest grid point is used to determine the magnetic declination.

getClosestIdx(LAT_target, LON_target)[source]

Finds the index of the closest grid point for a given latitude and longitude.

Parameters:

  • LAT_target (float) – Target latitude.

  • LON_target (float) – Target longitude.

Returns:

Index of the closest point in the grid or None if no point is found.

Return type:

int or None

getClosestLatitude(LAT_target)[source]

Finds the closest latitude in the grid to the target latitude.

Parameters:

LAT_target (float) – Target latitude to search for.

Returns:

The closest latitude from the grid or None if the target is out of bounds.

Return type:

float or None

getClosestLongitude(LON_target)[source]

Finds the closest longitude in the grid to the target longitude.

Parameters:

LON_target (float) – Target longitude to search for.

Returns:

The closest longitude from the grid or None if the target is out of bounds.

Return type:

float or None

getMagneticDeclination(LAT_target, LON_target)[source]

Returns the magnetic declination for the closest grid point to the target coordinates.

Parameters:

  • LAT_target (float) – Target latitude.

  • LON_target (float) – Target longitude.

Returns:

Magnetic declination at the closest grid point or None if no point is found.

Return type:

float or None