Add polygon coverage to a PresenceAbscence object

Add polygon coverage within cells of a PresenceAbsence object.

Usage

lets.addpoly(x, y, z, onlyvar = FALSE, count = FALSE)

Arguments

x: A PresenceAbsence object.
y: Polygon of interest.
z: A character indicating the column name of the polygon containing the attributes to be used.
onlyvar: If TRUE only the matrix object will be returned.
count: Logical, if TRUE a progress bar indicating the processing progress will be shown.

Value

The result is a presence-absence matrix of species with the polygons' attributes used added as columns at the right-end of the matrix. The Values represent the percentage of the cell covered by the polygon attribute used.

Author

Bruno Vilela

Examples

if (FALSE) {
data(PAM)  # Phyllomedusa presence-absence matrix
data(wrld_simpl)  # World map
Brazil <- wrld_simpl[wrld_simpl$NAME == "Brazil", ]  # Brazil (polygon)

# Check where is the variable name 
# (in this case it is in "NAME" which will be my z value)
names(Brazil)

PAM_pol <- lets.addpoly(PAM, Brazil, "NAME", onlyvar = TRUE)
}