I am currently trying to create a species distribution model in R using maxent. The shape file I have is a map of an island. When viewed in ArcMap it has a set extent--in Lat and Long. I can successfully pull this into R and plot presence points. However, I cannot plot any points that are outside of the lat/long extent of the map's shape file. Is there a way of widening/expanding the extent of this shape file so that I can plot points further offshore?
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