make_CrownPolygons: Fit polygon hulls around tree crowns in a clustered point...
In niknap/MeanShiftR: Tree delineation from lidar using mean shift clustering

Description Usage Arguments Value Author(s)

View source: R/make_CrownPolygons_function.R

The function creates crown projection area polygons from a clustered point cloud of a forest stand. The input point cloud needs to have a column containing tree ID / cluster ID of each point. There are different options for the shape of the polygons.

make_CrownPolygons(
  pc.dt,
  type = "convexhull",
  N.min = 20,
  Ext.min = 2,
  Ext.max = 50,
  proj4string = CRS(as.character(NA))
)

`pc.dt`	Point cloud in data.table format containing columns X, Y, Z and ID
`type`	Shape of the desired polygons ("convexhull", "ellipse" or "circle")
`N.min`	Minimum number of points in a cluster to be considered as a tree crown
`Ext.min`	Minimum horizontal extent (in meters, in X- and Y-direction) of a cluster to be considered as a tree crown
`Ext.max`	Maximum horizontal extent (in meters, in X- and Y-direction) of a cluster to be considered as a tree crown
`proj4string`	Projection string of class CRS-class