mf_annotation: Plot an annotation

In riatelab/mapsf: Thematic Cartography

Plot an annotation

Description

Plot an annotation on a map.

Usage

mf_annotation(
  x,
  txt,
  pos = "topright",
  cex = 0.8,
  col_arrow,
  col_txt,
  halo = FALSE,
  bg,
  s = 1,
  ...
)

Arguments

x	an sf object with 1 row, a couple of coordinates (c(x, y)) or "interactive"
txt	the text to display
pos	position of the text, one of "topleft", "topright", "bottomright", "bottomleft" or "center"
cex	size of the text
col_arrow	arrow color
col_txt	text color
halo	add a halo around the text
bg	halo color
s	arrow size (min=1)
...	further text arguments.

Value

No return value, an annotation is displayed.

Examples

mtq <- mf_get_mtq()
mf_map(mtq)
mf_annotation(
  x = c(711167.8, 1614764),
  txt = "Look!\nImportant feature\nhere!",
  pos = "bottomleft", cex = 1.2, font = 2,
  halo = TRUE, s = 1.5
)

mf_annotation(
  x = mtq[20, ],
  txt = "This is less\nimportant",
  cex = .7, font = 3, s = 1.3
)

riatelab/mapsf documentation built on June 9, 2025, 10:07 p.m.