[Talk-in] Question regarding open-elevation map

firebird lrmodes at gmail.com
Fri Jun 1 09:21:31 UTC 2018

Hi Deepthi Patric,

As far as i know, elevation contours can be extracted from openly 
available data sets from ASTER / SRTM / ALOS satellite imagery services. 
Each one has different spatial resolution and elevation accuracy 
depending upon the measurement (remote sensing) technology.

Do take a look at : https://wiki.openstreetmap.org/wiki/Relief_maps

Geomorphometry and hydrological analysis depend upon the Digital 
Elevation Models derived from such preprocessed data sets.


On 05/31/2018 04:15 PM, Deepthi Patric wrote:
> How does the elevation map work ? Does it work by extracting contours 
> from SRTM ? Or does it use point-sampling tool ?
> Regards,
> Deepthi J
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