Simple helper function to prepare data for model fitting
prepareData(x, p, b, factors, xy=FALSE)Raster* object
presence points
background (or absence) points
vectors indicating which variables are factors (using layer names or numbers)
logical. If TRUE, the first two columns of the returned data.frame will be the coordinates of p and b (labeled 'x' and 'y')
data.frame with nlayers(x)+1 columns and nrow(p) + nrow(b) rows. The first column, 'pb' indicates whether a record represents presence '1' or background '0' values. The other columns have the values from the Raster* object.