The
first image was created by combining a colored, hillshaded digital elevation
model with a scanned map image from the Conservation Fund’s Civil War
Battlefield Guide.The results
were displayed with the ArcView 3D Analyst and captured as a JPG image
file.
The next four images use digital orthophoto quarter quad (DOQQ) aerial
photography draped over a digital elevation model, and displayed with Erdas’s
Virtual GIS package.