Provided by: plplot-doc_5.9.9-2ubuntu2_all
plpoin - Plot a glyph at the specified points
plpoin(n, x, y, code)
Plot a glyph at the specified points. (This function is largely superseded by plstring(3plplot) which gives access to many[!]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. Redacted form: plpoin(x, y, code) This function is used in examples 1,6,14,21,29.
n (PLINT, input) Number of points in the x and y arrays. x (PLFLT *, input) Pointer to an array with X coordinates of points. y (PLFLT *, input) Pointer to an array with Y coordinates of points. code (PLINT, input) Hershey symbol code (in "ascii-indexed" form with -1 <= code <= 127) corresponding to a glyph to be plotted at each of the n points.
Geoffrey Furnish and Maurice LeBrun wrote and maintain PLplot. This man page was automatically generated from the DocBook source of the PLplot documentation, maintained by Alan W. Irwin and Rafael Laboissiere.
PLplot documentation at http://plplot.sourceforge.net/resources. February, 2012 PLPOIN(3plplot)