entropy: Extract model entropy

In johnbaums/rmaxent: Tools for working with Maxent in R

Description

Extract the entropy of a Maxent model from a lambdas objects generated by parse_lambdas().

Usage

entropy(x)

Arguments

x	A lambdas object returned by parse_lambdas().

See Also

parse_lambdas() project()

Examples

# Below we use the dismo::maxent example to fit a Maxent model:
if (require(dismo) && require(rJava) && 
    file.exists(system.file('java/maxent.jar', package='dismo'))) {
  fnames <- list.files(system.file('ex', package="dismo"), '\\.grd$', 
                       full.names=TRUE )
  predictors <- stack(fnames)
  occurrence <- system.file('ex/bradypus.csv', package='dismo')
  occ <- read.table(occurrence, header=TRUE, sep=',')[,-1]
  me <- maxent(predictors, occ, path=file.path(tempdir(), 'example'), 
               factors='biome')

  # ... and then parse the lambdas information:
  lam <- parse_lambdas(me)
  entropy(lam)
}

johnbaums/rmaxent documentation built on July 3, 2020, 5:36 p.m.