colour.sd_CIE_standard_illuminant_A

colour.sd_CIE_standard_illuminant_A(shape=SpectralShape(360, 780, 1))[source]

CIE Standard Illuminant A is intended to represent typical, domestic, tungsten-filament lighting.

Its spectral distribution is that of a Planckian radiator at a temperature of approximately 2856 K. CIE Standard Illuminant A should be used in all applications of colorimetry involving the use of incandescent lighting, unless there are specific reasons for using a different illuminant.

Parameters:shape (SpectralShape, optional) – Spectral shape used to create the spectral distribution of the CIE Standard Illuminant A.
Returns:CIE Standard Illuminant A. spectral distribution.
Return type:SpectralDistribution

References

[CIETC1-482004n]

Examples

>>> from colour import SpectralShape
>>> sd_CIE_standard_illuminant_A(SpectralShape(400, 700, 10))
... # doctest: +ELLIPSIS
SpectralDistribution([[ 400.        ,   14.7080384...],
                      [ 410.        ,   17.6752521...],
                      [ 420.        ,   20.9949572...],
                      [ 430.        ,   24.6709226...],
                      [ 440.        ,   28.7027304...],
                      [ 450.        ,   33.0858929...],
                      [ 460.        ,   37.8120566...],
                      [ 470.        ,   42.8692762...],
                      [ 480.        ,   48.2423431...],
                      [ 490.        ,   53.9131532...],
                      [ 500.        ,   59.8610989...],
                      [ 510.        ,   66.0634727...],
                      [ 520.        ,   72.4958719...],
                      [ 530.        ,   79.1325945...],
                      [ 540.        ,   85.9470183...],
                      [ 550.        ,   92.9119589...],
                      [ 560.        ,  100.       ...],
                      [ 570.        ,  107.1837952...],
                      [ 580.        ,  114.4363383...],
                      [ 590.        ,  121.7312009...],
                      [ 600.        ,  129.0427389...],
                      [ 610.        ,  136.3462674...],
                      [ 620.        ,  143.6182057...],
                      [ 630.        ,  150.8361944...],
                      [ 640.        ,  157.9791857...],
                      [ 650.        ,  165.0275098...],
                      [ 660.        ,  171.9629200...],
                      [ 670.        ,  178.7686175...],
                      [ 680.        ,  185.4292591...],
                      [ 690.        ,  191.9309499...],
                      [ 700.        ,  198.2612232...]],
                     interpolator=SpragueInterpolator,
                     interpolator_args={},
                     extrapolator=Extrapolator,
                     extrapolator_args={...})