OpenDX Terrain
This map records land height and ocean depth. The scale-bar gives us information on colors assigned to a specific height, we see different values of blue in which darker is deeper, a high saturated blue is sea level but lighter blue has not been assigned to the scale, it is present in the map and it doesn't have a value. The lighter blue is used to enhance the look of the image, but the its presence affects the scale. Aside from color we have a three dimensional representation of the same information. Although is an attractive image, is very difficult to read. The height and depth of the earth is out of scale in relationship to the area and size of the globe.

Map Source: IBM Research, OpenDX

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