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Tag Archives: color map

Spectral lightness rainbow colormap

November 18, 2014by matteomycarta Leave a comment

Spectral lightness rainbow Quick post to share my replica of Ethan Montag ‘s Spectral lightness colormap from this paper. My version has a linear Lightness profile (Figure 1) that increases monotonically […]

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Cartography and mapping, Color, Geoscience, Matlab, Programming and code, Tutorial, VIsualization

Visualizing colormap artifacts

November 12, 2014by matteomycarta 1 Comment

In Evaluate and compare colormaps, I have shown how to extract and display the lightness profile of a colormap using Python. I do this routinely with colormaps, but I realize […]

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Cartography and mapping, Color, Graphics, Matlab, Programming and code, Research, Tutorial, VIsualization

What your brain does with colours when you are not “looking” – part 2

November 3, 2014by matteomycarta 7 Comments

In What your brain does with colours when you are not “looking”, part 1, I displayed some audio spectrogram data (courtesy of Giuliano Bernardi at the University of Leuven) using 5 different colormaps to render the amplitude […]

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Color, Geophysics, Geoscience, ImageJ, Matlab, Programming and code, Tutorial, VIsualization

New Matlab isoluminant colormap for azimuth data

October 30, 2014by matteomycarta 2 Comments

I recently added to my Matlab File Exchange function, Perceptually improved colormaps, a colormap for periodic data like azimuth or phase. I am going to briefly showcase it using data from my degree […]

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Color, Geophysics, Geoscience, Matlab, Programming and code, Tutorial, VIsualization

Parula: a new Matlab colormap

October 15, 2014by matteomycarta 9 Comments

Steve Eddins of the Matwork just published a post announcing a new Matlab colormap to replace Jet. It is called Parula (more to come on his blog about this intriguing name). […]

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Color, Matlab, VIsualization

What your brain does with colours when you are not “looking” – part 1

August 24, 2014by matteomycarta 4 Comments

When I published the last post of my series The rainbow is dead…long live the rainbow! there was a great discussion in the comments section with Giuliano Bernardi, a Ph.D. student at the University of […]

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Color, Geophysics, Geoscience, Matlab, Programming and code, VIsualization

Visualize Mt St Helen with Python and a custom color palette

May 8, 2014by matteomycarta 5 Comments

Evan Bianco of Agile Geoscience wrote a wonderful post on how to use python to import, manipulate, and display digital elevation data for Mt St Helens before and after the infamous […]

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Cartography and mapping, Color, Geology, Geoscience, Programming and code, Python, Tutorial, VIsualization

Convert color palettes to python matplotlib colormaps

April 25, 2014by matteomycarta 19 Comments

This is a quick post to show you how to import my perceptual color palettes – or any other color palette – into Python and convert them into Matplotlib colormaps. We […]

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Color, color-2, Graphics, Programming and code, Python, Tutorial, VIsualization

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Go ahead if you want to use my code, modify it, improve it, for non-commercial AND for commercial use. You are also welcome to download and reuse my media files - unless otherwise stated. With both code and images, please give full and clear credit to Matteo Niccoli as the author and mycarta.wordpress.com as the source.
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