= LIDAR Classification = == Purpose == == Method == === classify_las.out === This is a c++ utility written to do basic classification on LAS files. The current classification algorithms include: * Isolated points - identify points as noise (classification 7) if there is no other point within x metres of it. * Absolute elevation - identify points as noise (classification 7) if they are above or below a given elevation. A fence can be used to only classify points within a rectangular boundary. '''Usage''' '''YOU MUST BE ON A FEDORA 12 MACHINE TO RUN THIS''' {{{ -lasfilein The LAS file to be imported and classified -lasfileout The name of the output LAS file optional flags -isolated x Run the isolated points algorithm using a distance of x metres -above x Run the absolute elevation algorithm classifying points with elevation above x metres -below x Run the absolute elevation algorithm classifying points with elevation below x metres -fence minx miny maxx maxy Use a fence whose bounds are given by minx,miny maxx,maxy }}} Currently only one method can be used per run of the software. This is due to be changed shortly. '''Example''' - to classify isolated points {{{ classify_las.out -lasfilein example.LAS -lasfileout classified.LAS -isolated 5 }}}