Spectral and XYZ Color Functions

version (33.3 KB) by Jeff Mather
Label plots with spectra. Convert wavelengths to RGB. Functions for color matching and illuminants.


Updated Mon, 08 Nov 2010 10:33:39 +0000

View License

This is the beginning of a set of functions for working with color as wavelengths (spectral color) and in the xyY and XYZ color spaces.

Current functionality includes:

spectrumLabel - Add a color bar containing the visible spectrum to a plot's X axis.

spectrumRGB - Converts wavelengths of light to equivalent RGB values (in the sRGB space).

colorMatchFcn - Raw data of popular color matching functions (spectra to XYZ) for various standard observers:
* CIE 1931 2-degree
* CIE 1964 10-degree
* CIE 1931 2-degree modified by Judd (1951)
* CIE 1931 2-degree modified by Judd (1951) and Vos (1978)
* Stiles and Burch 2-degree (1955)
* Stiles and Burch 10-degree (1959)

illuminant - Raw data for the A, D65, and E standard illuminants.

Cite As

Jeff Mather (2022). Spectral and XYZ Color Functions (https://www.mathworks.com/matlabcentral/fileexchange/7021-spectral-and-xyz-color-functions), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R14SP1
Compatible with any release
Platform Compatibility
Windows macOS Linux

Inspired: Perceptually improved colormaps

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!