[GIS] How to create a digital elevation map

demtandem-x

I am very new to Quantum GIS, I want to create a digital elevation map a particular region, I would very much appreciate if some one gives me a step by step procedure.

Thank you

edit by Martin: I have the same question, but I want to create DEM from scan map (the territory of interest is aprox. 28 square km). Work flow: First open the map in an image editor (GIMP), select by colors with some tolerance and select the black color. Invert selection and delete non-black stuff. Save as Tiff WITH NO COMPRESSION.
And then what is next step in QGIS with Grass Plugin? How can I get the contour values to the Tiff (my big problem)? After all is no problem make DEM from contours, I guess.
Sorry for this "stupid" questions and thanks for all your replyings.
Regards Martin

Best Answer

there are lots of information about creating dem. but you must be clear about what data you have?

  1. Creating a DEM from contours, here
  2. Creating a DEM from vector data, here
  3. Creating Maps from SRTM Data, here
  4. Inverse Distance Weighting (IDW) Interpolation using QGIS , here
  5. A workflow for creating beautiful relief shaded dems using GDAL, here

dem

i hope it helps you...

Related Question