| map.text {maps} | R Documentation |
Like map, but labels the regions.
map.text(database, regions = ".", labels, cex = 0.75, add = FALSE, move = FALSE, ...)
database |
character string naming a geographical database, or a list of
x, y, and names obtained from a previous call to
map. |
regions |
character vector that names the polygons to draw. |
labels |
character vector of labels, one for each region. Defaults to the names in the database. |
cex |
character expansion factor. |
add |
If FALSE, a map is drawn, then labels placed on top. If
TRUE, labels are added to the existing map. |
move |
If TRUE, labels are moved so that they don't
overlap. Requires the mining library (not in CRAN, contact
tpminka@media.mit.edu). |
... |
Other arguments are the same as in map. |
If add = FALSE, a map is drawn by calling map.
Then the label for each region is placed at the centroid of the region
polygon.
The return value is a map object, as from map.
Tom Minka
map.text("world", "ira") # iran and iraq
map.text("state", "penn")
map.text("county", "penn") # Pennsylvania counties
map.text("county", "new jersey") # New Jersey counties