Description Usage Arguments Value Note References See Also

Check the location of point(s) with respect to a polygon.

1 |

`poly` |
matrix containing the |

`pts` |
matrix of containing the |

An integer vector of indicators for each point in `pts`

,

- -1
error when number of polygon vertices exceeds 3000;

- 0
outside the polygon;

- 1
at the polygon boundary;

- 2
inside the polygon.

This function is provided here so that users do not need to load other
packages, as it is not available in the base **R** packages. THE
VERTICES MAY BE LISTED CLOCKWISE OR ANTICLOCKWISE

The return values have been changed from the original ones so that the point is inside (including at the boundary) if positive.

This Fortran code comes from Wm Randolph Franklin, Electrical, Computer, and Systems Engineering Department, Rensselaer Polytechnic Institute, Troy, New York, at website http://www.ecse.rpi.edu/Homepages/wrf.

`phat`

and `mcseg.test`

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