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())))
# }
Community examples
Looks like there are no examples yet.