magneticScattering.dft.calc_params_from_roi

calc_params_from_roi(current, roi, datashape)

Given the current extent of the image and the desired roi to upsample, the appropriate offset and upsample values are provided.

Parameters:

current4-tuple of float

Current extent of the image.

roi4-tuple of float

Desired roi.

datashapetuple of int

Desired shape of the data.

Returns:

offset, upsampletuple of float

Offset and upsample values that will yield the desired roi when the discrete Fourier transform is calculated.