Description Usage Arguments Value Author(s) See Also Examples
Add polygon coverage within cells of a PresenceAbsence object.
1 | lets.addpoly(x, y, z, onlyvar = FALSE)
|
x |
A |
y |
Polygon of interest. |
z |
A character indicating the column name of the polygon containing the attributes to be used. |
onlyvar |
If |
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.
Bruno Vilela
1 2 3 4 5 6 7 8 9 10 11 12 13 | ## Not run:
data(PAM) # Phyllomedusa presence-absence matrix
require(maptools)
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")
## End(Not run)
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