calculate_allocation    Sample allocation type and count
calculate_coobs         coobs algorithm sampling
calculate_distance      Distance to access layer
calculate_lhsOpt        Analyze optimal Latin hypercube sample number
calculate_pcomp         Raster principal components
calculate_pop           Population descriptors
calculate_representation
                        Compare sample representation within sraster
                        strata
calculate_sampsize      Sample size determination
extract_metrics         Extract metrics
extract_strata          Extract strata
sample_ahels            Adapted Hypercube Evaluation of a Legacy Sample
                        (ahels)
sample_balanced         Balanced sampling
sample_clhs             Conditioned Latin Hypercube Sampling
sample_existing         Sample existing
sample_nc               Nearest centroid (NC) sampling
sample_srs              Simple random sampling
sample_strat            Stratified sampling
sample_sys_strat        Systematic stratified sampling
sample_systematic       Systematic sampling
strat_breaks            Breaks stratification
strat_kmeans            k-means stratification
strat_map               Map a raster stack of a list of rasters
strat_poly              Stratify using polygons
strat_quantiles         Quantiles stratification
