[Qgis-user] Merging DEMs

[Randal Hale]

I have two Digital Elevation Models - Imagine a square cut into two 
equal triangles.

No matter how I do it - One DEM overwrites the other one so I'm only 
ever getting half of the elevation model I want when I merge them. It 
appears GDAL only takes the last Elevation model and uses that to 
overwrite the First. I've tried making no-data transparent....I've 
converted the img to a tif (these are 1/9 DEMs from the USGS National 
Map). In someone's infinite wisdom they were cut at the North 
Carolina/South Carolina State Line.

Thoughts or ideas?

Randy

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Randal Hale, GISP
North River Geographic Systems, Inc
http://www.northrivergeographic.com
423.653.3611 rjhale at northrivergeographic.com
twitter:rjhale
http://about.me/rjhale