At 02:27 PM 10/18/02 -0400, Steven M. Timbrook wrote: >I am working with USGS DEM's and I would like to merge neighboring >DEM's. I am looking for suggestions on how to perform this operation
General pointers (data sources, techniques, things to watch out for, reprojecting, mosaicing, fixing gaps, etc.), and a specific work flow illustrated with ESRI's Spatial Analyst (but easily adaptable to IDRISI, Grass, etc.), are available in my "GIS Course" Web pages at http://www.quantdec.com/SYSEN597 . Link to "Notes" and look for "Working with DEMs."
--Bill Huber Quantitative Decisions
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