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<div><span>Hi Jorn,</span></div><div><span><br></span></div><div><span>I've been able to successfully import point data into rasters using the very clear steps outlined on the GRASS LiDAR wiki page here :</span><a href="http://grass.osgeo.org/wiki/LIDAR">http://grass.osgeo.org/wiki/LIDAR</a> with r.in.xyz (<a href="http://grass.osgeo.org/grass64/manuals/html64_user/r.in.xyz.html">http://grass.osgeo.org/grass64/manuals/html64_user/r.in.xyz.html</a>)</div><div><br></div><div>especially the section titled "<span class="Apple-style-span" style="font-family: sans-serif; font-size: 15px; font-weight: bold; line-height: 19px; ">Import LAS as raster DEM".</span></div><div>If you are starting with the text file you can do something like </div><div><br></div><div>r.in.xyz input=<path to yourfile> output=<foo> fs=" " x=1 y=2 z=3</div><div><br></div><div><br></div><div>learned that ensuring that the region (g.region rast) is set to the extent of your data and that the region resolution determines the </div><div><span>As the tutorial says you may want to do a </span></div><div><span><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; line-height: 14px; font: normal normal normal 13px/normal Courier; background-color: rgb(249, 249, 249); "><br></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; line-height: 14px; font: normal normal normal 13px/normal Courier; background-color: rgb(249, 249, 249); ">v.surf.rst layer=0 in=${BASEMAP}_pt elev=${BASEMAP}.rst</p><div><br></div><div>to fill holes in the data</div><div><span><br></span></div><div><span>hope this helps!</span></div></span></div>
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<span><br>-- <br>Peter Tittmann<div>c 707 849 4135<br><br></div></span>
<p style="color: #a0a0a0;">On Friday, February 18, 2011 at 4:01 PM, Jorn Anke wrote:</p>
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<pre>Hi,<br><br>I have a pointcloud, (EUREF-89, sone 32 Norway, northern hemisphere), stored in a text file with format: X Y Z R G B. <br><br>I can easily import this file into commercial software like AutoCad + proprietary engineering software, and make a <br>dem out of it, run profiling, make elevation maps, and so on. <br><br>I would however very much like to be able to do the same thing in a open source software like GRASS GIS. By now, I have spent <br>quite some hours trying out GRASS, but still not managed to have it work. I would therefore very much appreciate if someone would <br>take the bother and walk me through the steps required, if possible with a copy of a working chain of commands required in order <br>to accomplish my goal.<br><br>An example file can be found here; <a href="http://uavmapping.com/forum/index.php?topic=17.0">http://uavmapping.com/forum/index.php?topic=17.0</a><br>(Notice, there are a considerable number of outliners, that should probably have been removed from the file).<br><br><br>Best regards,<br><br>Jorn<br></pre>
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