letsR (version 5.0)

lets.gridirizer: Fits a grid into a PresenceAbsence object

Description

This function creates a grid in shapefile format and adds its cells' IDs to the presence-absence matrix. The function was created to facilitate the use of the PresenceAbsence object for the ones who prefer to work with a grid in shapefile format.

Usage

lets.gridirizer(x)

Value

The result is a list of two objects. The first is a grid in shapefile format; the second is a presence-absence matrix with an aditional column called SP_ID (shapefile cell identifier).

Arguments

x

A PresenceAbsence object.

Author

Bruno Vilela

See Also

plot.PresenceAbsence

lets.presab.birds

Examples

if (FALSE) {
data(PAM)
PAM.grid <- lets.gridirizer(PAM)
names(PAM.grid)
# Grid in polygon format (can be saved in shapefile)
PAM.grid$Grid
# Presence-absence matrix (beggining only)
head(PAM.grid$Presence[, 1:5])

}