slice_wcs¶
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pvextractor.
slice_wcs
(wcs, spatial_scale)[source]¶ Slice a WCS header for a spectral cube to a Position-Velocity WCS, with ctype “OFFSET” for the spatial offset direction
Parameters: wcs :
WCS
The WCS of the spectral cube. This should already be sanitized and have the spectral axis along the third dimension.
spatial_scale: :class:`~astropy.units.Quantity`
The spatial scale of the position axis
Returns: wcs_slice
WCS
The resulting WCS slice