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23 comments

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stared
When it comes to plot colors in matplotlib, it's why I start with

import seaborn as sns

to get a nice plot theme, not "good old 90s" style. See: https://speakerdeck.com/pmigdal/teaching-machine-learning?sl...

yoodenvranx
I started using viridis a few weeks ago and I love it!
Bromskloss
That was an amusing talk. I had fun watching it.
jules
In the talk when he showed the 3 similar maps getting equal score, and then the green one getting a much higher score, that could easily be because people couldn't decide between the 3 similar maps, to they went with the one different map. To do a proper comparison the test should be 1-1 or 3-3, not 3-1.
xiphias
They wanted green because it's a python library. He goes into the details in the talk
donquichotte
I also enjoy using Olga Botvinnik's prettyplotlib: github.com/olgabot/prettyplotlib
slmouradian
I dislike that the whole page, including the updates, do not contain any dates...
carreau
Good point. I'll ping authors to update page with dates.
jxy
If you use gnuplot, which I do exclusively, you may like this repository:

    https://github.com/Gnuplotting/gnuplot-palettes
wnkrshm
I'm pleased. They look extremely similar to the gnuplot and gnuplot2 color maps already present in matplotlib, my favorites.
martian
OP here: really worth watching the embedded video on this topic. Viridis is born out of an awesome, intense deep-dive into research on human vision and perception.
Aardwolf
Is it strange that I find the old "JET" the best? It uses the most hues (green, yellow, red and blue are all there), so things are the most distinguishable. The others are either only blue/green/yellow, or only purple/red/yellow.
Scaevolus
Quick, which represents a larger value, green or red?

Having a gradient between two colors, from dark to light, makes it easier to determine the scale. Rainbow gradients look nice, but hue transitions are nowhere near as intuitive as luminance.

pdabbadabba
I think you're both correct, but your points respond to different needs. For some types of results (and audiences and modes of presentation) its more important that the reader be able to determine the approximate value that a color corresponds to than that the reader be able to quickly intuit the progression of values. For me, Jet is better at the former while Viridis et al are better at the latter.
lalaithion
Yes, that's the point. People like it a lot but are worse at actually interpreting it. It's confusing when people have to read lots of confusing data quickly