raster (version 3.6-11)

drawExtent: 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")

Value

Extent

Arguments

show

logical. If TRUE, the extent will be drawn on the map

col

sets the color of the lines of the extent

Examples

Run this code
if (FALSE) {
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())))
}

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