package archimedes

Raised for undefined point styles.

Point styles are identified by strings.

add name f extents adds to the existing point styles, a new point style, referenced under the name name. This point style is made using the function f; the extents it takes is given by extents. The behaviour of adding a new point style whose name is already used by another is the same as the core Map.S.add (that is, the previous binding disappears).

• returns

  a list of all names currently declared.

  By default, the following marks are defined (a short explanation is given if the mark is not clear from the string):

  • "x", "-", "|", "+", "*",
  • "o" (a circle), "O" (a disk, i.e. same as "o" but filled),
  • "s" (a square), "S" (a filled square),
  • "d" (a diamond), "D" (a filled diamond),
  • "^" (an inverted V), "v", ">", "<",
  • "^-" (a triangle pointing upward), "v-", "|>", "<|",
  • "^--" (a filled triangle pointing upward), "v--", "||>", "<||",
  • "p" (a pentagon), "P" (a filled pentagon),
  • "h" (an hexagon), "H" (a filled hexagon),
  • "tic_up" (a small bar above the current location), "tic_down", "tic_left", "tic_right".