plpoin3: Plot a glyph at the specified 3D points

`plpoin3`: Plot a glyph at the specified 3D points
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#### `plpoin3`: Plot a glyph at the specified 3D points

`plpoin3 (` | n ,
| x ,
| y ,
| z ,
| code `)`;

Plot a glyph at the specified 3D points. (This function is largely superseded by `plstring3` which gives access to many[!] more glyphs.) Set up the call to this function similar to what is done for `plline3`. ``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.

`n` (``PLINT``, input)

  Number of points in the ``x`` and ``y`` vectors.

`x` (``PLFLT_VECTOR``, input)

  A vector containing the x coordinates of points.

`y` (``PLFLT_VECTOR``, input)

  A vector containing the y coordinates of points.

`z` (``PLFLT_VECTOR``, input)

  A vector containing the z 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.

Redacted form: `plpoin3(x, y, z, code)`

This function is not used in any example.

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