plerrx: Draw error bars in x direction

`plerrx`: Draw error bars in x direction
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#### `plerrx`: Draw error bars in x direction

`plerrx (` | n,
| xmin,
| xmax,
| y`)`;

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`).

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

  Number of error bars to draw.

`xmin` (``PLFLT_VECTOR``, input)

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

`xmax` (``PLFLT_VECTOR``, input)

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

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

  A vector containing the y coordinates of the error bars.

Redacted form:

- General: `plerrx(xmin, ymax, y)`

This function is used in example 29.

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