hvlines - draw horizontal and vertical lines

Overview

A small PGFPlots library to draw horizontal and vertical lines.

Installation and loading

Place tikzlibrarypgfplots.hvlines.code.tex in a directory read by your TeX compiler. Load it through

\usetikzlibrary{calc} % required
\usepgfplotslibrary{hvlines}

Licence

Gnu General Public version, 3, as for PGFPlots.

Motivation and usage

Two keys, vertical line and horizontal line are defined that could be called in the options of axis. They took key-values with key at for the position and style for the style of the line.

The lines are plotted before the addplot through the execute at begin axis.

Example

 \begin{axis}[vertical line={at=2.5,style={blue}},horizontal line={at=1.5,style={dashed,->}}]
     \addplot table {
 	    1	1
 	    2	2
 	3	3.5};
 \end{axis}

For an alternative possibility, see this Stack Exchange question

Note

This is an experimental, alpha release, designed first for personnal use.

TODO

• Add commands for defining nodes.
• Dealing with missing value at.