Utilities

fetch([dataset, clear_cache, download_all])	Fetch a dataset included in mdreg
fetch_zarr([dataset, clear_cache, download_all])	Fetch a zarray dataset included in mdreg
fit_pixels(ydata[, model, p0, xdata, ...])	Fit a model pixel-wise
defo_jacobian_2d(defo)	Calculate the Jacobian matrix and determinant from a 2D deformation field.
defo_norm(defo[, norm])	Calculate the norm of a deformation field.