Draw an ID box on an image — id

Modified graphics::legend function to draw small boxes with ID information on top of images

Usage

id_box(
  x,
  y = NULL,
  legend,
  col = par("col"),
  border = "black",
  angle = 45,
  bty = "o",
  bg = "white",
  box.lwd = par("lwd"),
  box.lty = par("lty"),
  box.col = par("fg"),
  cex = 1,
  xjust = 0,
  yjust = 1,
  adj = c(0.25, 0),
  text.width = NULL,
  text.col = par("col"),
  text.font = NULL,
  ncol = 1,
  horiz = FALSE,
  inset = 0,
  xpd,
  seg.len = 1
)

Arguments

x, y: the x and y co-ordinates to be used to position the legend. They can be specified by keyword or in any way which is accepted by xy.coords: See ‘Details’.
legend: a character or expression vector of length \(\ge 1\) to appear in the legend. Other objects will be coerced by as.graphicsAnnot.
col: the color of points or lines appearing in the legend.
border: the border color for the boxes (used only if fill is specified).
angle: angle of shading lines.
bty: the type of box to be drawn around the legend. The allowed values are "o" (the default) and "n".
bg: the background color for the legend box. (Note that this is only used if bty != "n".)
box.lty, box.lwd, box.col: the line type, width and color for the legend box (if bty = "o").
cex: character expansion factor relative to current par("cex"). Used for text, and provides the default for pt.cex.
xjust: how the legend is to be justified relative to the legend x location. A value of 0 means left justified, 0.5 means centered and 1 means right justified.
yjust: the same as xjust for the legend y location.
adj: numeric of length 1 or 2; the string adjustment for legend text. Useful for y-adjustment when labels are plotmath expressions.
text.width: the width of the legend text in x ("user") coordinates. (Should be positive even for a reversed x axis.) Can be a single positive numeric value (same width for each column of the legend), a vector (one element for each column of the legend), NULL (default) for computing a proper maximum value of strwidth(legend)), or NA for computing a proper column wise maximum value of strwidth(legend)).
text.col: the color used for the legend text.
text.font: the font used for the legend text, see text.
ncol: the number of columns in which to set the legend items (default is 1, a vertical legend).
horiz: logical; if TRUE, set the legend horizontally rather than vertically (specifying horiz overrides the ncol specification).
inset: inset distance(s) from the margins as a fraction of the plot region when legend is placed by keyword.
xpd: if supplied, a value of the graphical parameter xpd to be used while the legend is being drawn.
seg.len: the length of lines drawn to illustrate lty and/or lwd (in units of character widths).