complementarity {changeRangeR}

Compare raster values within and outside of a mask

Description

Compare raster values within and outside of a mask

Usage

complementarity(ras1, ras1mask)

Arguments

ras1

'raster' object of categorical values (e.g., a species richness map)

ras1mask

'raster' object representing areas of interest (e.g., protected areas)

Value

A list of two objects. The first is the proportion of the range within the mask, and the second is the proportion of unique values masked.

Examples

# create raster
ras1 <- raster::raster(nrows=108, ncols=108, xmn=-50, xmx=50)
raster::values(ras1)<- runif(n = (108*108))
ras1[ras1 < 0.5] <- NA
ras1[!is.na(ras1)] <- 1
# create ras1mask
ras1mask <- raster::raster(nrows=108, ncols=108, xmn=-50, xmx=50)
raster::values(ras1mask)<- runif(n = (108*108))
ras1mask[ras1mask < 0.15] <- NA
ras1mask[!is.na(ras1mask)] <- 1
# complementarity
complementarity(ras1, ras1mask)