## S3 method for class 'map'
identify(x, n = 1, index = FALSE, ...)
Arguments
x
a map object containing named polygons.
n
the number of clicks to wait for.
index
If TRUE, returns the index of the polygon, rather than
its name.
...
additional arguments passed to identify.default.
Details
The current algorithm is somewhat crude — selects the region whose
centroid is closest to the click. A more sophisticated approach would
use map.where.
Value
a character vector of length n, naming the selected regions.
Author(s)
Tom Minka
See Also
identify, map.where
Examples
identify(map("state", fill = TRUE, col = 0))
if(require(mapproj))
identify(map("world", proj = "lagrange", fill = TRUE, col = 0))