![]() ![]() However, this value is non-monotonic in JET, such that ONE value in brightness may induce different values in perception. One first feature of colors in visual perception is its value, that is the total brightness, that acts as the most direct feature. JET is to be banned because it is perceptually ambiguous. Your eyes will make a constant set of saccades to match the plot with the bar. Indeed, colors are subjective in the sense that they are interpreted by the brain (in the sense that a spectrum is transformed into a neural activity) into different levels of valence (or value) as a function of the colorbar given next to it. You need the plot because you need to show data and you need a colormap because you know that the color you show will not be seen equally by all persons: any color is an interpretation through our visual perception. "<25").īut again, see the video, there are a lot of examples in there as well as complete explanations. Also change the color scale: starting at 0, even if it is logical from a scientific point of view, may not be a good idea to represent these specific data (but change your colorbar to reflect that, e.g. If you don't like viridis, use the other colormaps that were discussed in the video above: they have the same nice properties, and they won't make your data lie. Do the same thing in viridis, and you would merely have the impression that you are putting more or less light on the exact same thing. It creates contrast out of nowhere: just change your color scale a little bit in jet and you should see that the picture is change dramatically. ![]() However this comes at a very high price: jet literally shows things that do not exist. You said it yourself: jet almost never lacks contrast. Jet is very pleasing because it is flashy, colorful, and it does not require you to think about your color scale: even if you have just a few outliers, you still get "all the features" in your plot. You could also google it because there are a lot of (reasonable) jet-bashing everywhere. ![]()
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