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 dimensionalxarray.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
) – Axarray.DataArray
after Gaussian low-pass of the passedgrid
.
References