Plot a text — mf_text • mapsf

Plot a text on the map.

Usage

mf_text(
  x,
  txt = "Text",
  cex = 0.8,
  col_txt,
  pos = "center",
  offset = 0,
  align = "center",
  font = 1,
  family = "sans",
  halo = FALSE,
  col_halo,
  cex_halo = cex,
  box = FALSE,
  col_box,
  col_box_border,
  lwd_box = 2,
  line = 0,
  clockwise = TRUE,
  lwd = 2,
  col_line,
  arrow = TRUE,
  cex_arrow = 1,
  adj = c(0, 0)
)

Arguments

x: an sf object (the first row is used), a couple of coordinates (c(x, y)), a position (one of 'topleft', 'top','topright', 'right', 'bottomright', 'bottom', 'bottomleft', 'left'), or "interactive" for interactive placement.
txt: text to display
cex: text size
col_txt: text color
pos: position of the text relative to x (one of 'center', 'topleft', 'top', 'topright', 'right', 'bottomright', 'bottom', 'bottomleft', 'left'). Ignored if x is a position.
offset: offset between the text and x. Ignored if x is a position.
align: text alignement, one of "left", "right" or "center"
font: text font
family: text family
halo: add a halo around the text
col_halo: halo color
cex_halo: halo width
box: add a box around the text
col_box: box color
col_box_border: box border color
lwd_box: line width of the box border
line: type of the line drawn between the text and x. 0 for no line, 1 for a straight line, 2 for a line with an angle, 3 for a curved line. Ignored if x is a position.
clockwise: direction of the curve for types 2 and 3
lwd: line width
col_line: line color
arrow: add an arrow to the line
cex_arrow: arrow size
adj: adjust the text position in x and y directions

Value

No return value, an text is displayed.

Examples

library(mapsf)
mf_theme("base")
mtq <- mf_get_mtq()
mtq_p <- mf_get_mtq("points")
mf_map(mtq, expandBB = c(0, .1, 0, .3))
mf_map(mtq_p[c(2, 3, 17, 28), ],
  pch = 4, lwd = 1.5, cex = .5, col = "red",
  add = TRUE
)
mf_title("Title of the map", banner = TRUE)
mf_frame()
mf_text(x = "topright", txt = "x = 'topright'")
mf_text(
  x = "bottomleft",
  txt = "x = 'bottomleft'\nadj = c(4,4)\nalign = 'left'",
  adj = c(4, 4),
  align = "left"
)
mf_text(
  x = c(728000, 1625500),
  txt = "x = c(X, Y)",
  pos = "right",
  line = 2,
  offset = 5
)
mf_text(
  mtq[3, ],
  txt = "pos = 'top'\nhalo = TRUE",
  pos = "top",
  align = "center",
  halo = TRUE
)
mf_text(
  mtq[3, ],
  txt = "pos = 'bottomleft'\nhalo = TRUE\nalign = 'right'",
  pos = "bottomleft",
  align = "right",
  halo = TRUE
)
mf_text(
  x = mtq[17, ],
  txt = "pos = 'bottomright'\nline = 1\nbox = TRUE",
  pos = "bottomright",
  offset = 10,
  line = 1,
  box = TRUE
)
mf_text(
  x = mtq[17, ],
  txt = "pos = 'topright'\nline = 1\nalign = 'left'",
  pos = "topright",
  offset = 15,
  align = "left",
  line = 1
)
mf_text(
  x = mtq[2, ],
  txt = "pos = 'topleft'\nline = 2\nbox = TRUE\nclockwise = TRUE",
  pos = "topleft",
  offset = 8,
  clockwise = TRUE,
  line = 2,
  box = TRUE
)
mf_text(
  x = mtq[2, ],
  txt = "pos = 'bottomleft'\nline = 2\nclockwise = FALSE",
  pos = "bottomleft",
  offset = 6,
  clockwise = FALSE,
  line = 2,
  box = FALSE
)
mf_text(
  x = mtq[28, ],
  txt = "pos = 'topright'\nline = 3\nclockwise = FALSE",
  pos = "topright",
  offset = 10,
  clockwise = FALSE,
  line = 3,
  halo = TRUE,
  align = "left"
)
mf_text(
  x = mtq[28, ],
  txt = "pos = 'right'\nline = 3\nbox = TRUE\nclockwise = TRUE",
  pos = "right",
  offset = 10,
  clockwise = TRUE,
  line = 3,
  box = TRUE
)