The PLplot Plotting Library: Programmer's Reference Manual | ||
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plpoin
: Plot a glyph at the specified points
Plot a glyph at the specified points. (This function is largely
superseded by plstring
which gives access to many[!] more glyphs.)
code
=-1 means try to
just draw a point. Right now it's just a move
and a draw at the same place. Not ideal, since a sufficiently
intelligent output device may optimize it away, or there may be faster
ways of doing it. This is OK for now, though, and offers a 4X speedup
over drawing a Hershey font "point" (which is actually diamond shaped
and therefore takes 4 strokes to draw). If 0 < code < 32, then
a useful (but small subset) of Hershey symbols is plotted. If 32
<= code <= 127 the corresponding printable ASCII character is
plotted.
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Redacted form: plpoin(x, y, code)
This function is used in examples 1,6,14,21,29.