harmonica.gaussian_lowpass

harmonica.gaussian_lowpass

harmonica.gaussian_lowpass(grid, wavelength)[source]

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

  • grid (xarray.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.

  • wavelength (float) – The cutoff wavelength in low-pass filter. Its units are the same units of the grid coordinates.

Returns

gaussian lowpass (xarray.DataArray) – A xarray.DataArray after Gaussian low-pass of the passed grid.

References

[Geosoft1999]

See also

harmonica.filters.gaussian_lowpass_kernel

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