Generate sampling points within a SpatialPolygon object, according to a specified sampling density.
sample.by.poly(p, n.pts.per.ac=1, min.samples=5,
sampling.type='regular', p4s=NULL)
A SpatialPoints
object.
a Polygon object, with coordinates in a projected CRS with units of meters
requested sampling density in points per acre (results will be close)
minimum requested number of samples per polygon
sampling type
a qualified proj4string that will be assigned to sampling points
D.E. Beaudette
This function is typically accessed via some kind of helper function such as constantDensitySampling
.
constantDensitySampling