treecm (version 1.2.2)

treecm-package: Assessment of the position of the centre of mass of trees

Description

The centre of mass is a crucial data for arborists in order to consolidate a tree using steel or dynamic cables. Given field-recorded data on branchiness of a tree, the package:

• computes and plots the centre of mass of the tree itself
• simulates the shift in CM position as branches are pruned
• computes branches slenderness coefficient in order to aid the arborist identify potentially dangerous branches
• computes the force acting on a ground plinth and its best position relating to the tree centre of mass, should the tree need to be stabilized by a steel cable

The tree stem is ideally sectioned in logs. The weight of tree components is assessed based on

• the sum of volume of stem logs
• the sum of branches biomass

Field measures to be taken on logs and branches are described in importFieldData and are to be recorded on the tree itself, possibly using tree-climbing tecniques. In order to help the arborist in the pruning selection process a simple plot of branch coefficient of slenderness is implemented.

References

Source code is hosted at GitHub (http://mbask.github.com/treecm/)

See Also

logBiomass importFieldData

Examples

data(stonePine1TreeData)
vectors  <- treeVectors(stonePine1TreeData)
CM       <- centreOfMass(vectors)
plot(vectors, 
   main = "Centre Of Mass", 
   col = "grey30", 
   txtcol = "grey30")
plot(CM)
summary(CM)