mpd.: Mean pairwise distance
In funphylocom: Functional traits, phylogenies, communities, simulations

Description Usage Arguments Details Value Author(s)

Calculates mean pairwise distance separating taxa in a community (slightly modified from the picante function: mpd)

1	mpd.(samp, dis, abundance.weighted = FALSE, ord = TRUE)

`samp`	Community data matrix.
`dis`	Interspecific distance matrix.
`abundance.weighted`	Should mean pairwise diatnces be weighted by species abundance? (default = FALSE).
`ord`	Order rows and columns of the matrices? (defaults to `TRUE`). Note that sites are never ordered.

Two changes from original mpd function: (1) avoid NA values (TODO: better description here). (2) give useful error messages for poorly named samp and dis. Also please be aware that if abundance.weighted = FALSE, then samp should be explicitly a presence-absence matrix (i.e. with zeros and ones only).

Vector of MPD values for each community.

Code modified from original version by Steven Kembel.

funphylocom documentation built on May 2, 2019, 5 p.m.