basicbox: Produce a basic square or rectangular mapping polygon

In ahb108/sparch: Assorted methods to supplement core spatial packages in R

Description

Function to produce a basic square or rectangular box (e.g. for polygon clipping or plot borders)

Usage

basicbox(ll, ur, ul = c(ll[1], ur[2]), lr = c(ur[1], ll[2]), proj4string = NA)

Arguments

ll	coordinates of the lower left corner
ur	coordinates of the upper right corner
ul	coordinates of the upper left corner (by default set automatically)
lr	coordinates of the lower right corner (by default set automatically)
proj4string	projection string of class CRS.

Value

An object of class SpatialPolygonsDataFrame

Examples

utm34n <- CRS("+init=epsg:32634") # Greek UTM (west)
b <- basicbox(c(681900,4010900), c(682500,4011400), proj4string=utm34n)
plot(b, axes=TRUE)

ahb108/sparch documentation built on Feb. 3, 2021, 1:21 a.m.