schoenersD: Calculates Schoener's D-value between two RasterLayers.

In isocat: Isotope Origin Clustering and Assignment Tools

Description

RasterLayers must have identical resolutions and extents.

Usage

schoenersD(rast1, rast2)

Arguments

rast1	Input RasterLayer
rast2	Input RasterLayer 2

Details

Calculates similarity value of two RasterLayers using Schoener's D-metric.

Examples

# Generate example probability surfaces.
myiso <- raster::rasterFromXYZ(isoscape)
myiso_sd <- raster::rasterFromXYZ(isoscape_sd)
df <- data.frame(
        ID = c(-100, -80, -50),
        isotopeValue = c(-100, -80, -50),
        SD_indv = rep(5, 3)
        )
assignmentModels <- isotopeAssignmentModel(
        ID = df$ID,
        isotopeValue = df$isotopeValue,
        SD_indv = df$SD_indv,
        precip_raster = myiso,
        precip_SD_raster = myiso_sd,
        nClusters = FALSE
        )

# Calculate Schoener's D-metric of spatial similarity between two of the
# example probability surfaces.
schoenersD(assignmentModels[[1]], assignmentModels[[2]])
## 0.969156

isocat documentation built on July 8, 2020, 5:15 p.m.