Identify Data Type to Open
The program forces you to select the type of data because:
- Some data formats, like Geotiffs, could be either DEMs or imagery, and
nothing in the file or its metadata makes this apparent. The program
needs to know the type of data, because it supports different menu choices
depending of the data's characteristics.
- The program originally had completely different display operations for
DEMs and imagery. While this has mostly been replaced with a common
map window, the data structures for a DEM and an image remain quite
distinct.
- In the early days of GIS and remote sensing, completely different
programs were used for the two operations, and that philosophy still has
some remnants in the MICRODEM source code.
The most important data open operations:
Last revision 9/28/2017