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Hi, Though many people like rainbow palettes there are many criticisms of them. One is that they can create the illusion of large data differences where there are only small differences in the data being shown. Think of a SST plot where there is a sharp line between reds and yellows, where there is really nothing important going on but the contrast draws the eye to it. Another is that they're not readily visible to people with color blindness. These articles talk about both of those effects, https://www.scientificamerican.com/article/end-of-the-rainbow-new-map-scale-is-more-readable-by-people-who-are-color-blind/ The current default, viridis, is one of a family of palettes in
common use in R and Matlab and elsewhere. I think it can be pretty
dark at the dark end, but making choices with color levels and
perhaps choosing other palettes is Another thought we had about this was to maybe remind us all that
the choice of color palette is worth thinking about, and perhaps
customizing for different kinds of data. I like the palettes
called blue_green_yellow and yellow_green_blue. By coincidence, when your mail came yesterday I had just been updating this FAQ, showing more of the newer color palettes also introduced with the viridis palette. https://ferret.pmel.noaa.gov/Ferret/faq/ferret-color-palettes This FAQ talks about some more palette choices (it needs some
updates to modernize the graphics)!
-Ansley
On 8/29/2019 7:46 PM, Xi Chang wrote:
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Ansley Manke NOAA/PMEL Science Data Integration Group 7600 Sand Point Way NE 206-526-6246 |