Changes between Initial Version and Version 1 of Help/DEM_scripts


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Timestamp:
Feb 9, 2012 10:15:16 AM (8 years ago)
Author:
adbe
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  • Help/DEM_scripts

    v1 v1  
     1== DEM scripts ==
     2This page details and explains the use of the DEM creation scripts:
     3   '''lidardem.sh'''[[BR]]
     4   '''asterdem.sh'''[[BR]]
     5   '''nextmapdem.sh'''[[BR]]
     6   '''lidar_aster_dem.sh'''
     7The scripts listed are written in bash.
     8
     9These scripts are used to create a DEM from LiDAR and elevation model tiles.
     10The scripts use grass GIS to read in the elevation tiles and perform patching and various other operations on the data to create a DEM.
     11GRASS is a GIS (Geograohic Information System) and details of it can be found at: http://grass.fbk.eu/. There is a detailed api and usage guide, it is available for free download at: http://grass.fbk.eu/download/index.php.
     12
     13=== Creating a DEM from ASTER data using ''asterdem.sh'' script ===
     14ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) is a sensor on the Terra satellite, ASTER is partly being used to obtain elevation maps. The ASTER version 1 have an approximate resolution of 30 metres, version 2 however has an approximate resolution of 15 metres.