R: Arithmetic and mathematical operations with objects of...
ArithMath-methods
R Documentation
Arithmetic and mathematical operations with objects of Transition* classes
Description
Standard arithmetic operators for computations with Transition* objects and numeric values.
Transition objects must have the same extent and resolution.
All arithmetic and mathematical operations that work on the sparse matrices are available for Transition* objects.
Value
Transition* object or numeric.
Author(s)
Jacob van Etten
Examples
#create a new raster and set all its values to unity.
raster <- raster(nrows=18, ncols=36)
raster <- setValues(raster,rep(1,ncell(raster)))
#create TransitionLayer objects
tr1 <- transition(raster,mean,4)
tr2 <- tr1
#arithmetic operations
tr3 <- tr1 * tr2
tr4 <- tr3 * 4
#mathematical operations
tr5 <- sqrt(tr4)