Recent work from Megan Henriksen and the LROC team is improving their color-shaded relief and slope maps, see New Dynamically Generated Color-shaded Reliefs For Narrow Angle Camera Digital Terrain Models.
@thare pointed out that although it’s a major step away from the traditional rainbow color ramp (see NASA please no rainbows, troubles with rainbows or a dangerous rainbow), we can question the use of divergent color ramps for topography, especially for people with Color Vision Deficiency (CVD).
- Quote: “A divergent colormap is used to compare data values to a reference value in a way that visually highlights whether values are above or below the reference.” [ref].
- Topography generally doesn’t have that reference (even including sea-level for Earth).
We propose to produce and test different color ramps, including: