Hi Chuck,
Thanks for your so detail help.
The Lidar DEM is 0.9m resolution. It can be seen in ArcCatalog as raster dataset (please see below)
However, it is shown as two folder in windows explorer (please see below)
When I try to load it into Inroads, it can not be recognized. Could you explain in more detail how to load if possible?
Thanks!
Charley