Generate a grid of points
gridpts(poly,npts,xs,ys)
A points object containing a grid of points inside the polygon. If npts
is specified, then a grid spacing xs
and ys
will be calculated to give
approximately npts
in the polygon. If xs
and ys
are given then these
will be used to generate a number of points in the polygon.
polygon in which to generate the points
approximate number of points to generate
grid spacing in x and y
Either npts
or xs
and ys
must be specified. If all three
are given then xs
and ys
are ignored.
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.