| 71 | 71 | To return sensible results you will need a dem. One should have already been completed in the unpacking stage. If not, it will need to be created. If the project is in the UK you can use [wiki:Processing/NextMapDEMs Nextmap data] (try running `nextmapdem.sh` in the project directory to do it automatically, otherwise see the [wiki:Processing/NextMapDEMs wiki page]). If it's non-UK, you'll need to use [wiki:Help/LeicaLidarDems LiDAR data] (you may wish to use this anyway if it's available - see [wiki:Processing/CreateTifs here] on how to do this using a script), or failing that [wiki:Processing/SRTMDEMs SRTM 90m data]. Copy it into the dem directory. Once you've done this include the DEM file in the config file by entering "dem=<dem_file_name>" under the DEFAULT section. |