Posted 8/10/2017 09:50 (#6178103 - in reply to #6174125) Subject: RE: Viewer for LIDAR Data, GSL or GNP
Oops. Out spraying fungicide on beans, late to reply.
Here, I think the file extension for the DEM's and DTM's is .adf. I am sure there are others.
When I load a DEM I get a grayscale image where the elevation value is represented by the range from black to white. Then I create a polygon, clip the DEM, and use the contour tool to create contour lines. But I am working with base county-wide datasets - they either take a long time to contour, or they crash my PC.