<div dir="ltr"><div>Hi there,</div><div><br></div><div>I'm running GRASS 7.x from OSGeo Live and I have a 7Gb GeoTiff DEM of my city which was acquired by LIDAR. </div><div>But, before generating itens like countours, slope, relief, etc... we'd like to remove non-natural objects such as buildings, constructions, light poles, tree and in first, to a have terrain model (surface height) before generating derived products.</div><div><br></div><div>What modules/functions of GRASS should I research for? Or maybe use some combination with other tools? (QGIS, GDAL DEM)</div><div><br></div><div>thanks in advance,</div><br clear="all"><div><div class="gmail_signature">Eduardo Patto Kanegae<br><a href="http://www.webmapit.com.br" target="_blank">http://www.webmapit.com.br</a> | @webmapit</div></div>
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