BaseStretch¶
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class
astropy.visualization.
BaseStretch
[source]¶ Bases:
astropy.visualization.BaseTransform
Base class for the stretch classes, which, when called with an array of values in the range [0:1], return an transformed array of values, also in the range [0:1].
Attributes Summary
A stretch object that performs the inverse operation.
Methods Summary
__call__
(self, values[, clip, out])Transform values using this stretch.
Attributes Documentation
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inverse
¶ A stretch object that performs the inverse operation.
Methods Documentation
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__call__
(self, values, clip=True, out=None)[source]¶ Transform values using this stretch.
- Parameters
- valuesarray_like
The input values, which should already be normalized to the [0:1] range.
- clipbool, optional
If
True
(default), values outside the [0:1] range are clipped to the [0:1] range.- out
ndarray
, optional If specified, the output values will be placed in this array (typically used for in-place calculations).
- Returns
- result
ndarray
The transformed values.
- result
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