Symbolic coordinates with commas

Question

How can I use symbolic x coords={} with commas as decimal separators?

For example, I need to use symbolic x coords={0,1.5,1.3}, which gives full stops as decimal separators. Using use comma does not have an effect (logically, so I have nothing against that).

Minimal working example:

\documentclass[border=2pt]{standalone}
\usepackage[utf8]{inputenc}
\usepackage{pgfplots}

\begin{document}
\begin{tikzpicture}
\begin{axis}[
    symbolic x coords={0,1.5,1.3},
    xtick=data,
    /pgf/number format/.cd,
    use comma,
]
    \addplot coordinates {
        (0, 1)
        (1.5, 2)
        (1.3, 1)
    };
\end{axis}
\end{tikzpicture}
\end{document}

Answer 1

As it is, PGFplots thinks that the symbolic coordinates are text strings, so it doesn't apply the number formatting options. To fix this, you can set xticklabel=\pgfmathprintnumber{\tick}, which feeds the strings through the number parser and formats them accordingly:

\documentclass[border=2pt]{standalone}
\usepackage[utf8]{inputenc}
\usepackage{pgfplots}

\begin{document}
\begin{tikzpicture}
\begin{axis}[
    symbolic x coords={0,1.5,1.3},
    xtick=data,
    /pgf/number format/.cd,
    use comma,
    xticklabel=\pgfmathprintnumber{\tick}
]
    \addplot coordinates {
        (0, 1)
        (1.5, 2)
        (1.3, 1)
    };
\end{axis}
\end{tikzpicture}
\end{document}