harmonica.gaussian_lowpass

harmonica.gaussian_lowpass(grid, wavelength)

Calculate the Gaussian low-pass of a potential field grid

Compute the Gaussian low-pass of regular gridded data using frequency domain calculations through Fast Fourier Transform.

Parameters:

gridxarray.DataArray

A two dimensional xarray.DataArray whose coordinates are evenly spaced (regular grid). Its dimensions should be in the following order: northing, easting. Its coordinates should be defined in the same units.

wavelengthfloat

The cutoff wavelength in low-pass filter. Its units are the same units of the grid coordinates.

Returns:

gaussian lowpassxarray.DataArray

A xarray.DataArray after Gaussian low-pass of the passed grid.

See also

harmonica.filters.gaussian_lowpass_kernel

References

[Geosoft1999]