R version 4.0.2 (2020-06-22) -- "Taking Off Again"
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> 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)))
[1] 0 0 3 1 3 0 0 0 0 0
> # closed polygon:
> print(point.in.polygon(1:10,rep(4,10),c(3,5,5,3,3),c(3,3,5,5,3)))
[1] 0 0 2 1 2 0 0 0 0 0
>
> proc.time()
user system elapsed
0.209 0.024 0.227
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