sample.by.poly: Sample a Polygon at Fixed Density

In ncss-tech/sharpshootR: A Soil Survey Toolkit

Sample a Polygon at Fixed Density

Description

Generate sampling points within a SpatialPolygon object, according to a specified sampling density.

Usage

sample.by.poly(p, n.pts.per.ac=1, min.samples=5, 
sampling.type='regular', p4s=NULL)

Arguments

p	a Polygon object, with coordinates in a projected CRS with units of meters
n.pts.per.ac	requested sampling density in points per acre (results will be close)
min.samples	minimum requested number of samples per polygon
sampling.type	sampling type
p4s	a qualified proj4string that will be assigned to sampling points

Details

This function is typically accessed via some kind of helper function such as constantDensitySampling.

Value

A SpatialPoints object.

Note

This function expects that the Polygon object has coordinates associated with a projected CRS– e.g. units of meters. Invalid geometries may cause errors or yield incorrect sample sizes.

Author(s)

D.E. Beaudette

See Also

constantDensitySampling

ncss-tech/sharpshootR documentation built on April 9, 2024, 4:27 a.m.