pickMean: pickMean

In sdmvspecies: Create Virtual Species for Species Distribution Modelling

Description

pick mean method

Usage

pickMean(env.stack, subset = NULL, stack = FALSE)

Arguments

env.stack	a rasterStack object that contain the environment variable
subset	subset is a string vector that contain environment variables names which into calculate, if NULL that all var in env.stack will calculate.
stack	stack is an option that if you want not compose them togethor (result return as a rasterStack). Default is FALSE

Details

This method mainly implement pick mean method

Value

rasterLayer or rasterStack if stack is set to TRUE

References

Jiménez-Valverde, A., & Lobo, J. M. (2007). Threshold criteria for conversion of probability of species presence to either–or presence–absence. Acta oecologica, 31(3), 361-369.

Examples

# load the sdmvspecies library
library("sdmvspecies")
library("raster")
# find package's location
package.dir <- system.file(package="sdmvspecies")
# let see where is our sdmvspecies is installed in
package.dir
# find env dir under the package's location
env.dir <- paste(package.dir, "/external/env/", sep="")
# let see env dir
env.dir
# get the environment raster file
files <- list.files(path=env.dir, pattern="*.bil$", full.names=TRUE)
# make raster stack
env.stack <- stack(files)
# run pick mean
species.raster <- pickMean(env.stack)
# plot map
plot(species.raster)

sdmvspecies documentation built on May 2, 2019, 5:11 a.m.