zscale module¶
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stsci.numdisplay.zscale.
zscale
(image, nsamples=1000, contrast=0.25, bpmask=None, zmask=None)¶ Implement IRAF zscale algorithm
Parameters: - image (arr) – 2-d numpy array
- nsamples (int (Default: 1000)) – Number of points in array to sample for determining scaling factors
- contrast (float (Default: 0.25)) – Scaling factor for determining min and max. Larger values increase the difference between min and max values used for display.
- bpmask (None) – Not used at this time
- zmask (None) – Not used at this time
Returns: Return type: (z1, z2)