drawExtent

From raster v3.4-5 by Robert Hijmans

Create an Extent object by drawing on a map

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

Keywords: spatial

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())))
# }

Documentation reproduced from package raster, version 3.4-5, License: GPL (>= 3)

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