lets.gridirizer: Fits a grid into a PresenceAbsence object
In letsR: Data Handling and Analysis in Macroecology

Description Usage Arguments Value Author(s) See Also Examples

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.

1	lets.gridirizer(x)

`x`	A `PresenceAbsence` object.

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).

Bruno Vilela

plot.PresenceAbsence

lets.presab.birds

## Not run: 
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])

## End(Not run)