Elevation and difference maps for each of the 14 quadrangles used in the study are portrayed here. The elevation maps use the 30 meter DEMs and employ various color schemes. Colors on different images do not indicate equivalent elevations.
Difference is defined as:
Zdiff = [3 arc second elevation] - [30m bilinearly interpolated elevation]
On the following difference maps, red indicates stronger postive values for Zdiff, meaning that the 3 arc second value is larger than the 30m estimate. Blue indicates negative values for Zdiff, which means that the 3 arc second value is smaller than the 30m estimate. White are areas in which the difference is close to zero.
An absolute color scale was used to indicate differences for all difference maps, so these can be compared directly.
13 of the 14 quads have both an untransformed difference map and a transformed one using the coefficients which reduced the RMSE the most.
S.B. lv1 difference maps. Left: untransformed. Right: transformed
S.B. lv2 difference maps. Left: untransformed. Right: transformed
Salis. Potrero difference maps. Left: untransformed. Right: transformed
Cuy. Peak difference maps. Left: untransformed. Right: transformed
Camarillo difference maps Left: untransformed. Right: transformed
Oxnard untransformed difference map
Elkhorn difference maps Left: untransformed. Right: transformed
Fellows difference maps Left: untransformed. Right: transformed
N. Oildale difference maps Left: untransformed. Right: transformed
Buena Vista difference maps Left: untransformed. Right: transformed
Devils Speedway difference maps Left: untransformed. Right: transformed
Furnace difference maps Left: untransformed. Right: transformed
High Peak difference maps Left: untransformed. Right: transformed
Ashton difference maps Left: untransformed. Right: transformed