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

# plerrx(3plplot)

Draw error bars in x direction

## NAME

**plerrx** - Draw error bars in x direction

## SYNOPSIS

**plerrx**(*n*, *xmin*, *xmax*, *y*)

## DESCRIPTION

Draws a set of *n* error bars in x direction, the i'th error bar extending from *xmin*\[i\] to *xmax*\[i\] at y coordinate *y*\[i\].  The terminals of the error bars are of length equal to the minor tick length (settable using [**plsmin**(3plplot)](/plsmin/3plplot.md)).

Redacted form: General: **plerrx(xmin, ymax, y)**

This function is used in example 29.

## ARGUMENTS

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

  Number of error bars to draw.

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

  A vector containing the x coordinates of the left-hand endpoints of the error bars.

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

  A vector containing the x coordinates of the right-hand endpoints of the error bars.

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

  A vector containing the y coordinates of the error bars.

## 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.