Distance-Decay Data — calculate_distance_decay • spesim

Pair geographic distances between sites with community dissimilarities (Sorensen index computed as binary Bray-Curtis) for distance-decay plots.

Usage

calculate_distance_decay(abund_matrix, site_coords)

Arguments

abund_matrix: A site x species abundance data frame where the first column is site and the remaining columns are abundances.
site_coords: A data frame with numeric columns x and y giving site coordinates (in a projected CRS) in the same row order as abund_matrix.

Value

A data frame with two numeric columns:

Distance: Euclidean distance between site pairs.
Dissimilarity: Sorensen dissimilarity (0-1).

See also

plot_distance_decay, vegan::vegdist

Examples

if (FALSE) { # \dontrun{
dd <- calculate_distance_decay(abund_matrix, site_coords)
head(dd)
} # }