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Like map, but labels the regions.
map.text(database, regions = ".", exact = FALSE, labels, cex = 0.75,
add = FALSE, move = FALSE, ...)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
character string naming a geographical database, or a list of
x, y, and names obtained from a previous call to
map.
character vector that names the polygons to draw.
If 'TRUE', only exact matches with 'regions' are selected for drawing.
character vector of labels, one for each region selected. Defaults to the names in the database.
character expansion factor.
If FALSE, a map is drawn, then labels placed on top. If
TRUE, labels are added to the existing map.
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.
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
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