Chromaticity Plotter

Version 1.0.0 (3 KB) by Nuno De Sá Teixeira
Plots the pixels of an image on a xy-chromaticity diagram along with some optional references.
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Updated 18 Mar 2026

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This function plots the pixels of an image on a xy-chromaticity diagram. It requires a csv file with the original CIExyz1931 color matching functions, titled "CIE_xyz_1931_2deg.csv" (available at https://cie.co.at/datatable/cie-1931-colour-matching-functions-2-degree-observer).
The function is meant to be used as an educational tool for course on Visual Perception.
The function accepts the following optional parameters:
- Image file
- Plot a reference RGB triangle
> Plot only the outline
> Plot a filled triangle
- Plot the daylight locus
- Plot the CIExyz1931 reference values along with wavelenght labels

Cite As

Nuno De Sá Teixeira (2026). Chromaticity Plotter (https://au.mathworks.com/matlabcentral/fileexchange/183461-chromaticity-plotter), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2024a
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.0.0