---
name: "plpoin"
section: "3plplot"
platform: "linux"
package: "plplot-doc"
version: "5.15.0+dfsg2-15"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/plpoin"
---

# plpoin(3plplot)

Plot a glyph at the specified points

## NAME

**plpoin** - Plot a glyph at the specified points

## SYNOPSIS

**plpoin**(*n*, *x*, *y*, *code*)

## DESCRIPTION

Plot a glyph at the specified points.  (This function is largely superseded by [**plstring**(3plplot)](/plstring/3plplot.md) which gives access to many\[!\] more glyphs.)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, and 29.

## ARGUMENTS

- *n* (**PLINT**(3plplot), input)

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

- *x* (**PLFLT\_VECTOR**(3plplot), input)

  A vector containing the x coordinates of points.

- *y* (**PLFLT\_VECTOR**(3plplot), input)

  A vector containing the y coordinates of points.

- *code* (**PLINT**(3plplot), 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.

## AUTHORS

Many developers (who are credited at http://plplot.org/credits.php) have contributed to PLplot over its long history.

## SEE ALSO

PLplot documentation at http://plplot.org/documentation.php.