> both "_ "and "<-" are assignment operators
well, I've changed it in my script, but the result is the same.
> what do you get if you call
>
> in.polygon(grid2.point$x,grid2.point$y,polygon$x,polygon$y)
That's it !
In fact all my points in grid2.point where xy inverted. And I had no points
in polygon.
It was really a stupid mistake. Thanks for all !
Lionel
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