VoxR (version 0.5.1)

VoxR-package: Metrics extraction of trees from T-LiDAR data

Description

Tools for a geometric description of tree crown, tree growth and spatially differentiated objects recognition based on point cloud voxelisation.

Details

VoxR offers tools for 3d point cloud voxelisation (see vox), 3d point cloud projection and visualization of projections (see project, raster.proj, level and surface), geometrical description of 3d point cloud (see point.distance, axis.distance and axis.angle), tree growth analysis based on voxelised LiDAR point clouds comparison (see sub.obj) and spatially differentiated objects recognition (see obj.rec).

References

This package uses previous work from the following packages :

• raster : Robert J. Hijmans & Jacob van Etten (2013). raster: Geographic data analysis and modeling. R package version 2.1-25. http://CRAN.R-project.org/package=raster

These packages must be intalled to use the function raster.proj.

The examples of 3d functions are plotted using the plot3d function from the rgl package : Daniel Adler and Duncan Murdoch (2013). rgl: 3D visualization device system (OpenGL). R package version 0.93.932. http://CRAN.R-project.org/package=rgl

Examples

data(treecloud)

#-voxelisation using the vox function

treecloud_vox <- vox(treecloud,res=0.02)

#-visualisation

require(rgl)
library(rgl)
open3d()
plot3d(treecloud_vox,size=0.1)