polygon_grid: Polygon grid
In daffp/shapegrid: Create grid of points

Description Usage Arguments Details Value Examples

View source: R/polygon_grid.R

Create a grid of points within a polygon (DON'T USE – doesn't work correctly. See plot in examples.)

1	polygon_grid(N, NV, vertices)

`N`	The number of subintervals each side should be divided into i.e. there are (N+1) points on a side.
`NV`	The number of vertices in the polygon.
`vertices`	A vector of length `2.NV` giving the (x,y) coordinates of each vertex of the polygon or a matrix with two rows and `2.NV` columns of vertex coordinates.

Code taken from https://people.sc.fsu.edu/~jburkardt/cpp_src/polygon_grid/polygon_grid.html.

Returns a matrix with the x and y positions of each point in the grid.

v = cbind( c(0, 0.5), c(0.5,0), c(1,1), c(1.5,0),c(2,0.5))
par(mfrow=c(1,3))
for(i in 1:3){
  pts = polygon_grid(10, ncol(v)-i+1, c(v[, seq(ncol(v)-i+1)]))
  plot(pts, main=bquote(.(i)~ "vertices")) 
}