options("rgdal_show_exportToProj4_warnings"="none")
library(sp)
# open polygon:
print(point.in.polygon(1:10,1:10,c(3,5,5,3),c(3,3,5,5)))
# closed polygon:
print(point.in.polygon(1:10,rep(4,10),c(3,5,5,3,3),c(3,3,5,5,3)))
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