colour.constant_spd¶

colour.constant_spd(k, shape=SpectralShape(360, 780, 1), dtype=<type 'numpy.float64'>)[source]¶

Returns a spectral power distribution of given spectral shape filled with constant \(k\) values.

Parameters:	k (numeric) – Constant \(k\) to fill the spectral power distribution with. shape (SpectralShape, optional) – Spectral shape used to create the spectral power distribution. dtype (type) – Data type used for the spectral power distribution.
Returns:	Constant \(k\) to filled spectral power distribution.
Return type:	SpectralPowerDistribution

Notes

By default, the spectral power distribution will use the shape given by colour.DEFAULT_SPECTRAL_SHAPE attribute.

Examples

>>> spd = constant_spd(100)
>>> spd.shape
SpectralShape(360.0, 780.0, 1.0)
>>> spd[400]
100.0