GIS 6005 Lab 4 - Color Ramps

The Color Brew ramp roughly shares the same class intervals as the adjusted progression ramp, with higher steps between G and B values and lower steps between R values. The intervals between classes on the Color Brewer ramp are not equal intervals though, while the ramps I selected in ArcGIS were exact intervals. The values calculated above for the class intervals are averages. Additionally, the values in Color Brewer don’t uniformly increase as you move to a lighter shade. For example, the R values increase from 185 to 223, then decrease to 201, the rise again to 241. You can also see visually that the saturation appears to change throughout the palette in a nonuniform way, such as the second color appearing very bright and intense compared to the other colors in the palette.

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