colour.sd_multi_leds¶
-
colour.
sd_multi_leds
(peak_wavelengths, fwhm, peak_power_ratios=None, shape=SpectralShape(360, 780, 1), method='Ohno 2005')[source]¶ Returns a multi LED spectral distribution of given spectral shape at given peak wavelengths and full widths at half maximum according to given method.
Parameters: - peak_wavelengths (array_like) – Wavelengths the multi LED spectral distribution will peak at, i.e. the peaks for each generated single LED spectral distributions.
- fwhm (array_like) – Full widths at half maximum, i.e. widths of the underlying gaussian spectral distributions measured between those points on the y axis which are half the maximum amplitude.
- peak_power_ratios (array_like, optional) – Peak power ratios for each generated single LED spectral distributions.
- shape (SpectralShape, optional) – Spectral shape used to create the spectral distribution.
- method (unicode, optional) – {‘Ohno 2005’}, Computation method.
Returns: Multi LED spectral distribution.
Return type: Notes
- By default, the spectral distribution will use the shape given by
colour.DEFAULT_SPECTRAL_SHAPE
attribute.
References
Examples
>>> sd = sd_multi_leds( ... np.array([457, 530, 615]), ... np.array([20, 30, 20]), ... np.array([0.731, 1.000, 1.660]), ... ) >>> sd.shape SpectralShape(360.0, 780.0, 1.0) >>> sd[500] # doctest: +ELLIPSIS 0.1295132...