Hello,<br>i'm new to grass and not shure if i'm missing something but using "r.horizon" with GRASS 6.4.0 on Windows 7 in the single point mode gives me the "Unable to set up lat/long projection parameters" error. Im using a astergdem (<a href="http://asterweb.jpl.nasa.gov/gdem.asp">http://asterweb.jpl.nasa.gov/gdem.asp</a>).<br>
<br>Command used: <br>r.horizon -d --verbose elevin=astadem@TEST_r_horizon horizonstep=1 coord=47.113697,11.310281 dist=0.7<br><br>g.region -p <br>projection: 3 (Längen- und Breitengrad)<br>
zone: 0<br>datum: wgs84<br>ellipsoid: wgs84<br>north: 50:00:00.5N<br>south: 45:59:59.5N<br>west: 7:59:59.5E<br>east: 18:00:00.5E<br>nsres: 0:00:01<br>ewres: 0:00:01<br>rows: 14401<br>
cols: 36001<br>cells: 518450401<br><br>g.proj -p <br>-PROJ_INFO-------------------------------------------------<br>name : Lat/Lon<br>
proj : ll<br>datum : wgs84<br>ellps : wgs84<br>no_defs : defined<br>-PROJ_UNITS------------------------------------------------<br>unit : degree<br>units : degrees<br>meters : 1.0<br><br>
The raster displays correctly when using d.rast and displays correct elevation values with r.what.<br>Same problem when projecting raster into utm coordinates or using a smaller region within the large dem.<br> <br>Can't find the problem. Can anybody help me?<br>
<br>Thanks a lot!<br><br>regards<br>Marc<br><br>