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Points2Grid------------Points2Grid generates Digital Elevation Models (DEM) using a local griddingmethod. The local gridding algorithm computes grid cell elevation using acircular neighbourhood defined around each grid cell based on a radiusprovided by the user. This neighbourhood is referred to as a bin, while thegrid cell is referred to as a DEM node. Up to four values — minimum,maximum, mean, or inverse distance weighted (IDW) mean — are computed forpoints that fall within the bin. These values are then assigned to thecorresponding DEM node and used to represent the elevation variation overthe neighbourhood represented by the bin. If no points are found within agiven bin, the DEM node receives a value of null. The Points2Grid servicealso provides a null filing option, which applies an inverse distanceweighted focal mean via a square moving window of 3, 5, or 7 pixels to fillcells in the DEM that have null values.More information about Points2Grid (SVN, downloads, mailing list) can be foundat: http://www.opentopography.org/index.php/resources/otforge/points2grid.INSTALLATION------------Please read the INSTALL file for details on the installation process.USE---If any of your pre-requisites (curl, liblas, or PDAL) are installed on non-standardlocation, please set your LD_LIBRARY_PATH accordingly. To view complete usage information, please type "./points2grid" from thecommand-line.