Select points inside a polygon

`inpip(pts,poly,bound=NULL,quiet=TRUE)`

## Arguments

- pts
A points data set

- poly
A polygon data set

- bound
If points fall exactly on polygon boundaries, the default NULL gives arbitrary assignments. If TRUE, then all points "on" boundaries are set as within the polygon, if FALSE, outside.

- quiet
Do not report which points are on boundary for non-NULL bound

## Value

`inpip`

returns a vector of indices of the points in `pts`

that are located
in the polygon. Note that "in" is an arbitrary concept for points "on" the polygon boundary.

## References

Rowlingson, B. and Diggle, P. 1993 Splancs: spatial point pattern analysis
code in S-Plus. Computers and Geosciences, 19, 627-655;
the original sources can be accessed at:
https://www.maths.lancs.ac.uk/~rowlings/Splancs/. See also Bivand, R. and
Gebhardt, A. 2000 Implementing functions for spatial statistical analysis
using the R language. Journal of Geographical Systems, 2, 307-317.