Open it and extract the lidar folder to replace the one you just deleted. Go to the exercise_data\forestry\lidar\ folder, there you can find the file QGIS_2_2_toolbox.zip.This is valid for some installations of QGIS 2.2 and 2.4. If you have a folder named lidar, delete it.An old lidar plugin might be installed by default in your system in the folder C:/Program Files/QGIS Valmiera/apps/qgis/python/plugins/processing/.Close QGIS, if you have already started it.First you will have to set up the Processing framework settings to properly work with LAStools: You can obtain a digital elevation model (DEM) from a LiDAR point cloud and then create a hillshade raster that is visually more intuitive for presentation purposes. Managing LiDAR data within QGIS is possible using the Processing framework and the algorithms provided by LAStools.
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