genUSStateGrid: Generating a Grid over a US State

View source: R/utils.R

genUSStateGridR Documentation

Generating a Grid over a US State

Description

This function generate a grid of points over a US state with given increment size or resolution.

Usage

   genUSStateGrid(state, incr = NULL, resolution = NULL)

Arguments

state

the name of a US state.

incr

a numeric vector of length 2 specifying the increment in longitude and latitude.

resolution

a numeric vector of length 2 specifying the size of the grid in longitude and latitude.

Value

A data.frame:

lon

longitude of the grid point.

lat

latitude of the grid point.

id

the id number of the county in which the grid point is located.

county

the name of the county in which the grid point is located.

Author(s)

Jun Yan jun.yan@uconn.edu

See Also

genUSStateSites

Examples

mygrid <- genUSStateGrid('iowa', resolution=c(8, 4))
map('state', 'iowa')
points(mygrid)

brian-j-smith/ramps documentation built on Feb. 2, 2023, 5:54 a.m.