Update get_spacings to allow xarray input

[w-k-jones]

Get spacings function currently only allows iris cube input, we should add the dataarray -> cube decorator to allow xarray input

tobac/tobac/utils/general.py

Line 369 in ed4c4bf

def get_spacings(field_in, grid_spacing=None, time_spacing=None):

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[w-k-jones]

It will be best to wait until both #380 and #400 have been merged to do this to avoid conflicts

[fsenf]

We have this functionality already in #334 waiting for approval by @w-k-jones and @fziegner . I am going to close to issue - hope that is fine for you.

[w-k-jones]

We have this functionality already in #334 waiting for approval by @w-k-jones and @fziegner . I am going to close to issue - hope that is fine for you.

We will have to update it to use the new method for calling decorators in #380 though