letsR (version 5.0)

lets.summarizer: Summarize variable(s) values in a presence-absence matrix within species' ranges

Description

Based on a Presence-Absence matrix with added variables (see lets.addvar), this function summarizes the values of such variable(s) per species (across the species' occupied cells. i.e. within their ranges).

Usage

lets.summarizer(x, pos, xy = TRUE, fun = mean, ...)

Arguments

x

Presence-absence matrix with variables added.

pos

Column position of the variables of interest.

xy

Logical, if TRUE the input matrix contains geographic coordinates in the first two columns.

fun

Function to be used to summarize the variable per species. Default is mean.

...

Other parameters passed to the function defined in fun.

Author

Bruno Vilela & Fabricio Villalobos

References

Villalobos, F. and Arita, H.T. 2010. The diversity field of New World leaf-nosed bats (Phyllostomidae). Global Ecology and Biogeography. 19, 200-211.

See Also

lets.addvar

lets.addpoly

lets.field

Examples

if (FALSE) {
data(PAM)
data(temp)
temp <- terra::unwrap(temp)
pamvar <- lets.addvar(PAM, temp)
resu <- lets.summarizer(x = pamvar, pos = ncol(pamvar),
                        xy = TRUE)
}