Combine Terrain Layers - One is an Erdas-Imagine-Elevation-Grid with Pyramids

PeterDrexelPeterDrexel Global Mapper UserPosts: 41Trusted User
edited March 2012 in Bug Report
I Try to calculate the difference between 2 Elevation-Grids, one is stored as ArcAscii and one as Erdas IMG. If I do so and if I am zoomed out far it seams that Globalmapper 13 uses a wrong elevation for the img-file (it seams gm uses the Pyramid-Elevation of the IMG-File rather then the "Hires"-Elevation).
If I zoom into the Dataset and calculate the difference-Model again the result seams OK.


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