SDMtune (version 0.2.1)

plotCor: Plot Correlation

Description

Plot a correlation matrix heat map with the value of the correlation coefficients according with the given method. If cor_th is passed then it prints only the coefficients that are higher or lower than the given threshold.

Usage

plotCor(bg, method = "spearman", cor_th = NULL)

Arguments

bg

code'>SWD object used to compute the correlation matrix.

method

character. The method used to compute the correlation matrix, default is "spearman".

cor_th

numeric. If provided it prints only the coefficients that are higher or lower than the given threshold, default is NULL.

Value

A ggplot object.

Examples

# NOT RUN {
# Acquire environmental variables
files <- list.files(path = file.path(system.file(package = "dismo"), "ex"),
                    pattern = "grd", full.names = TRUE)
predictors <- raster::stack(files)

# Prepare background locations
bg_coords <- dismo::randomPoints(predictors, 10000)

# Create SWD object
bg <- prepareSWD(species = "Virtual species", a = bg_coords,
                 env = predictors, categorical = "biome")

# Plot heat map
plotCor(bg, method = "spearman")

# Plot heat map showing only values higher than given threshold
plotCor(bg, method = "spearman", cor_th = 0.8)
# }