#77 Relative coordinates do not work as expected with compat>=1.11

[erikf]

Commands like

\draw (axis cs:0,0) -- ++(0,1cm);

do no longer work as expected if compat is set to 1.11 or later. I would expect a vertical line to be drawn. But I get a sloped line to the upper right.

Setting compat to 1.10 gives a vertical line.

\documentclass[border=5pt]{standalone}
\usepackage{pgfplots}
\begin{document}
        \pgfplotsset{compat=1.10}
    \begin{tikzpicture}
        \begin{axis}[
            xmin=-1,xmax=1,
            ymin=-1,ymax=1
        ]
            \draw (axis cs:0,0) -- ++(0,1cm);
        \end{axis}
    \end{tikzpicture}

        \pgfplotsset{compat=1.11}
    \begin{tikzpicture}
        \begin{axis}[
            xmin=-1,xmax=1,
            ymin=-1,ymax=1
        ]
            \draw (axis cs:0,0) -- ++(0,1cm);
        \end{axis}
    \end{tikzpicture}
\end{document}

[Christian Feuersänger]

Thanks for the bug report; I will take care of it.

For the time being, you can avoid the issue either by using compat=1.9 as in your example or by using "++(0cm,1cm)", i.e. dimensional units in both arguments.

The background is that pgfplots tries to interprete any coordinate within its axis cs automatically as of 1.11 -- and that failed here.

I will fix it.