num2colormap.m

Version 1.0.0.0 (1.66 KB) by David Godlove
Convert numeric data to RGB values without changing the x,y data dimensions.
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Updated 27 Aug 2010

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I needed to create rgb jpg images of heatmaps that had the same dimensions as my input data. If a heatmap is created using the image function and then saved as a jpgeg, the dimensions of the resulting jpeg no longer correspond to the input dimensions of the data. This function returns a matrix of uint8 data with the same x and y dimensions as the data you input. The z dimension data correspond to RGB values. The output is suitable for conversion to jpg, tiff etc. using imwrite.m. This function supersedes num2jet.m. (Image processing toolbox required.)

Cite As

David Godlove (2024). num2colormap.m (https://www.mathworks.com/matlabcentral/fileexchange/28569-num2colormap-m), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2009a
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.0.0.0