OSM Tools
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Creating DEM from hgt files

Examples of maps on Basecamp and a GPS created using Openstreetmap data with newly generated DEM

plain with contours contours and DEM
plain with contours with contours & DEM

Tibet using OSM data

DEM File structure

Most of the file structure is now understood.:

wrong data correct data

With HGT Editor you can

  • correct ,modify and add DEM data
  • quickly detect ,locate and change void data .
    Many .hgt files include data which contain no vaild elevation.
  This .hgt file contains void data

DEM Orientation

On a GPS device if you have set orientation to Track up,your DEM is constantly recalculated depending on the direction you are going - this does not apply to your contours!