type_text: Text annotations plot type

Description

Type function for adding text annotations to a plot. This function allows you to draw text at specified (x,y) coordinates.

type_text(
  labels,
  adj = NULL,
  pos = NULL,
  offset = 0.5,
  vfont = NULL,
  font = NULL
)

labels: Character vector of length 1 or of the same length as the number of x,y coordinates.
adj: one or two values in \([0, 1]\) which specify the x (and optionally y) adjustment (‘justification’) of the labels, with 0 for left/bottom, 1 for right/top, and 0.5 for centered. On most devices values outside \([0, 1]\) will also work. See below.
pos: a position specifier for the text. If specified this overrides any adj value given. Values of 1, 2, 3 and 4, respectively indicate positions below, to the left of, above and to the right of the specified (x,y) coordinates.
offset: when pos is specified, this value controls the distance (‘offset’) of the text label from the specified coordinate in fractions of a character width.
vfont: NULL for the current font family, or a character vector of length 2 for Hershey vector fonts. The first element of the vector selects a typeface and the second element selects a style. Ignored if labels is an expression.
font: Font to be used, following graphics::par()


tinyplot(mpg ~ hp | factor(cyl),
  data = mtcars,
  type = type_text(
    labels = row.names(mtcars),
    font = 2,
    adj = 0))

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