mapsf (version 0.11.0)

mf_label: Plot labels

Description

Put labels on a map.

Usage

mf_label(
  x,
  var,
  col,
  cex = 0.7,
  overlap = TRUE,
  lines = TRUE,
  halo = FALSE,
  bg,
  r = 0.1,
  q = 1,
  ...
)

Value

No return value, labels are displayed.

Arguments

x

object of class sf

var

name(s) of the variable(s) to plot

col

labels color, it can be a single color or a vector of colors

cex

labels cex, it can be a single size or a vector of sizes

overlap

if FALSE, labels are moved so they do not overlap.

lines

if TRUE, then lines are plotted between x,y and the word, for those words not covering their x,y coordinate

halo

if TRUE, a 'halo' is displayed around the text and additional arguments bg and r can be modified to set the color and width of the halo.

bg

halo color, it can be a single color or a vector of colors

r

width of the halo, it can be a single value or a vector of values

q

quality of the non overlapping labels placement. Possible values are 0 (quick results), 1 (reasonable quality and speed), 2 (better quality), 3 (insane quality, can take a lot of time).

...

further text arguments.

Examples

mtq <- mf_get_mtq()
mf_map(mtq)
mtq$cex <- c(rep(.8, 8), 2, rep(.8, 25))
mf_label(
  x = mtq, var = "LIBGEO",
  col = "grey10", halo = TRUE, cex = mtq$cex,
  overlap = FALSE, lines = FALSE
)