drawExtent: Create an Extent object by drawing on a map
In raster: Geographic Data Analysis and Modeling

drawExtent

R Documentation

Create an Extent object by drawing on a map

Description

Click on two points of a plot (map) to obtain an object of class Extent ('bounding box')

Usage

drawExtent(show=TRUE, col="red")

Arguments

`show`	logical. If `TRUE`, the extent will be drawn on the map
`col`	sets the color of the lines of the extent

Value

Extent

Examples

## Not run: 
r1 <- raster(nrow=10, ncol=10)
values(r1) <- runif(ncell(r1))
plot(r1)
# after running the following line, click on the map twice
e <- drawExtent()
# after running the following line, click on the map twice
mean(values(crop(r1, drawExtent())))

## End(Not run)

raster documentation built on Oct. 3, 2024, 1:08 a.m.