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lsst.afw g4f4f280218+81551fceaa
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Public Member Functions | |
| def | __init__ (self, image, Q=8, pedestal=None) |
A mapping for an asinh stretch, estimating the linear stretch by zscale
x = asinh(Q (I - z1)/(z2 - z1))/Q
Parameters
----------
image
The image to analyse, or a list of 3 images to be converted to an intensity image
Q : `int`
The asinh softening parameter
pedestal : `float` or sequence of `float`, optional
The value, or array of 3 values, to subtract from the images
N.b. pedestal, if not None, is removed from the images when calculating the zscale
stretch, and added back into Mapping.minimum[]
See also
--------
AsinhMapping
Definition at line 324 of file _rgbContinued.py.
| def lsst.afw.display.rgb._rgbContinued.AsinhZScaleMapping.__init__ | ( | self, | |
| image, | |||
Q = 8, |
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pedestal = None |
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| ) |
Reimplemented from lsst.afw.display.rgb._rgbContinued.AsinhMapping.
Definition at line 346 of file _rgbContinued.py.