geoRcb

An extension of the Rpackage geoR that works with cost-based distances

Basically, three functions are adapted in order to admit custom distance matrices as additional arguments. Namely variog, to produce empirical variograms; likfit, to fit theoretical variograms and krige.conv, to preform kriging. Check the documentation on these functions for examples of usage.

The cost-based distance matrix need to be computed elsewhere. I have used GRASS GIS, with the help of a script. However, currently there is an R-package gdistance which could help in computing cost-based distances.

Instalation

  install.packages('devtools')  # package devtools needed
  devtools::install_github('famuvie/geoRcb')

Examples

   library(geoRcb)
   example('variog')
   example('likfit')
   example('krige.conv')

References

Antonio López-Quílez and Facundo Muñoz (2009). Geostatistical computing of acoustic maps in the presence of barriers. Mathematical and Computer Modelling 50(5-6):929-938. preprint | journal