bootstrapPercentChanges: Bootstraps rasters for testing significancy on comparable...

In tati-micheletti/usefun: Useful functions for my modules and packages

Description

Bootstraps rasters for testing significancy on comparable rasters of different species or scenarios

Usage

bootstrapPercentChanges(
  dataPath,
  years = c(2001, 2100),
  sampleSize = "auto",
  n = 100,
  shp = NULL,
  species = NULL,
  useFuture = FALSE
)

Arguments

dataPath	character. Path to raster data.
years	numeric. Years to compare. Currently this function only compares 2 years.
sampleSize	numeric or "auto" (default). What is the sample size (i.e. number of pixels) we want to use on the bootstrapping? If "auto" it calculates internally Cohen's D And Hedges G Effect Size.
n	numeric. Default is 100. How many iterations (random selection of 'sampleSize' pixels) should be done?
shp	character or shapefile. If you wish to calculate these metrics for separate areas. Needs to match the rasters. Default is NULL (i.e. the whole raster is only one area)
species	character. Default is NULL. Which species should this function be ran ?
useFuture	logical. Should use future to parallelize? Requires 'future' and 'future_apply“ packages

Value

list of significant species or scenarios with indication of increasing or decreasing

Author(s)

Tati Micheletti

tati-micheletti/usefun documentation built on June 29, 2020, 9:31 a.m.