PGFPlots：了解如何在不同的图层上绘制图表并排列它们

Question

我已经回答过前面的问题了 [1，2，3]，但我仍然无法弄清楚如何在不同的图层上绘制图表并改变它们的绘制顺序。

对于这个 MWE，如果我能弄清楚如何改变这三个图的出现顺序，使得图例条目具有相同的顺序，同时尽可能保持图命令/定义的顺序相同，我将不胜感激。

\RequirePackage{luatex85}
\documentclass{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=newest}

\begin{document}

\begin{tikzpicture}
    \begin{axis}[
            legend style={
                at={([yshift=30pt]0.5,1)},
                anchor=north},
            legend columns=-1,
            xmin=0, xmax=10,
            ymin=0, ymax=10,
        ]
        %
        \addplot [red,      line width = 5pt,   domain=0:10]    {x}; \addlegendentry{$x$}   
        \addplot [black,    line width = 5pt,   domain=0:10]    {(x-5)^2}; \addlegendentry{$(x-5)^2$}
        \addplot [yellow,   line width = 5pt,   domain=0:10]    {10-(x-5)^2}; \addlegendentry{$10-(x-5)^2$}
    \end{axis}
\end{tikzpicture}

\end{document}

Answer 1

如果您确实需要\addplot在不同的图层上绘制 s，请查看以下代码。

有关解决方案如何运作的更多详细信息，请查看代码中的注释。

% used PGFPlots v1.14
\documentclass[border=5pt]{standalone}
\usepackage{pgfplots}
    \pgfplotsset{
        % define the layers you need.
        % (Don't forget to add `main' somewhere in that list!!)
        layers/my layer set/.define layer set={
            background,
            main,
            foreground
        }{
            % you could state styles here which should be moved to
            % corresponding layers, but that is not necessary here.
            % That is why we don't state anything here
        },
        % activate the newly created layer set
        set layers=my layer set,
    }
\begin{document}
    \begin{tikzpicture}
        \begin{axis}[
            legend style={
                % (it is better to use `anchor=south' because then the gap
                % between the top axis line and the lower border of the
                % legend is independent of the height of the legend box)
                at={([yshift=10pt]0.5,1)},
                anchor=south,
            },
            legend columns=-1,
            xmin=0, xmax=10,
            ymin=0, ymax=10,
            % moved common `\addplot' options here
            domain=0:10,
            every axis plot post/.append style={
                line width=5pt,
            },
            % change `clip mode' to `individual' to avoid unwanted clipping
            clip mode=individual,
        ]
            \addplot [
                red,
                % and with `on layer' you can state the layer where the
                % plot should be drawn on
                on layer=foreground,
            ] {x};
                \addlegendentry{$x$}
            % because we don't state a layer here, this plot will be drawn
            % on layer `main'
            \addplot [black] {(x-5)^2};
                \addlegendentry{$(x-5)^2$}
            \addplot [
                yellow,
                on layer=background,
            ] {10-(x-5)^2};
                \addlegendentry{$10-(x-5)^2$}
        \end{axis}
    \end{tikzpicture}
\end{document}