lsst.display.matplotlib.matplotlib.AsinhNormalize Class Reference

Inheritance diagram for lsst.display.matplotlib.matplotlib.AsinhNormalize:

Public Member Functions
	__init__ (self, minimum=0, dataRange=1, Q=8)
Public Member Functions inherited from lsst.display.matplotlib.matplotlib.Normalize
	__call__ (self, value, clip=None)

Public Attributes
	mapping = afwRgb.AsinhMapping(minimum, dataRange, Q)

Protected Member Functions
	_getMinMaxQ (self)

Detailed Description

Provide an asinh stretch for mtv()

Constructor & Destructor Documentation

__init__()

lsst.display.matplotlib.matplotlib.AsinhNormalize.__init__	(		self,
			minimum = 0,
			dataRange = 1,
			Q = 8 )

Initialise an object able to carry out an asinh mapping

@param minimum   Minimum pixel value (default: 0)
@param dataRange Range of values for stretch if Q=0; roughly the
                 linear part (default: 1)
@param Q Softening parameter (default: 8)

See Lupton et al., PASP 116, 133

Member Function Documentation

_getMinMaxQ()

lsst.display.matplotlib.matplotlib.AsinhNormalize._getMinMaxQ ( self )

protected

Return an asinh mapping's minimum and maximum value, and Q

Regrettably this information is not preserved by AsinhMapping
so we have to reverse engineer it

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The documentation for this class was generated from the following file:

• python/lsst/display/matplotlib/matplotlib.py