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PGFPlots：\pgfplotsset{compat=1.13} 和绘制箭头的问题

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PGFPlots：\pgfplotsset{compat=1.13} 和绘制箭头的问题

我正在为我的条形图绘制重要性标记（使用 pgfplots 为图表添加重要标记）。在用户的帮助下，我设法按照自己想要的方式绘制了箭头。代码在我的工作示例中运行良好，但当我将其放入原始文件中时，它无法编译并显示以下错误消息：

! Package pgfplots Error: Sorry, the input coordinate `0' has not been defined with 'symbolic x coords={Baseline,Stimulus}... Maybe it has been misspelled? Or did you mean something like [normalized]0?

我现在发现问题似乎出在 \pgfplotsset{compat=1.13} 命令上。当我将此命令（位于我的原始文件中）放入工作示例中时，它无法编译并给出相同的错误警告。

您知道如何解决这个问题吗？如果我的原始文件中没有 \pgfplotsset{compat=1.13} 命令，所有图表看起来都很奇怪，所以我不想删除它。

这是我的工作示例：

        \documentclass{apa6}
    \usepackage{pgfplots}
%%% if you delete this command (below), the file compiles:
    \pgfplotsset{compat=1.13}
    \usetikzlibrary{arrows.meta}

\begin{document}

\begin{tikzpicture}
\begin{axis}[
ybar,
enlargelimits=0.15,
height=0.7\textwidth,
legend style={at={(0.5,-0.15)},
anchor=north,legend columns=-1},
ylabel={Pupillenweite},
symbolic x coords={Baseline,Stimulus},
xtick=data,
]
%neutral
\addplot[blue,fill=blue!30!white,error bars/.cd,y dir=both,y explicit,]
coordinates{(Baseline,0.0476) +-(0.02117,0.02117) (Stimulus,-0.1809) +-(0.01841,0.01841)};
%negativ
\addplot[red,fill=red!30!white,error bars/.cd,y dir=both,y explicit,]
coordinates{(Baseline,0.0342) +-(0.02073,0.02073) (Stimulus,0.1013) +-(0.01904,0.01904)};
%significance
   \draw [arrows={Bar[left]-Bar[right]},  shorten <= -10pt, shorten >=5pt] 
        (axis cs:Baseline,0.1) -- node[midway, above]{*} (axis cs:Stimulus,0.1);
    \draw [arrows={Bar[left]-Bar[right]}, ] 
        (axis cs:Stimulus,0.15) ++(-10pt, 0) -- node[midway, above]{*} ++(30pt,0);
   \draw [arrows={Bar[left]-Bar[right]}, shorten <= 5pt, shorten >=-5pt] 
        (axis cs:Baseline,0.13) -- node[midway, above]{*} (axis cs:Stimulus,0.13);
\legend{neutral,emotional}
\end{axis}
\end{tikzpicture}

\end{document}

答案1

第二个 \draw 命令包括对起始坐标++(-10pt, 0)和结束坐标的修改++(30pt,0)。但是，这两个实例中 y 坐标都缺少单位说明符。因此，此\draw命令需要写成：

\draw [arrows={Bar[left]-Bar[right]}] 
    (axis cs:Stimulus,0.15) ++(-10pt,0pt) -- 
     node[midway, above]{*} ++(30pt,0pt);

结果如下：

在此处输入图片描述

这是 MWE：

\documentclass{apa6}
\usepackage{pgfplots}
\pgfplotsset{compat=1.13} % and above
\usetikzlibrary{arrows.meta}
\pagestyle{empty}         % remove page number
\begin{document}

\begin{tikzpicture}
\begin{axis}[
ybar,
enlargelimits=0.15,
height=0.7\textwidth,
legend style={at={(0.5,-0.15)},
anchor=north,legend columns=-1},
ylabel={Pupillenweite},
symbolic x coords={Baseline,Stimulus},
xtick=data,
]
%neutral
\addplot[blue,fill=blue!30!white,error bars/.cd,y dir=both,y explicit,]
coordinates{(Baseline,0.0476) +-(0.02117,0.02117) (Stimulus,-0.1809) +-(0.01841,0.01841)};
%negativ
\addplot[red,fill=red!30!white,error bars/.cd,y dir=both,y explicit,]
coordinates{(Baseline,0.0342) +-(0.02073,0.02073) (Stimulus,0.1013) +-(0.01904,0.01904)};
%significance
   \draw [arrows={Bar[left]-Bar[right]},  shorten <= -10pt, shorten >=0pt] 
        (axis cs:Baseline,0.1) -- node[midway, above]{*} (axis cs:Stimulus,0.1);
    \draw [arrows={Bar[left]-Bar[right]}, ] 
        (axis cs:Stimulus,0.15) ++(-10pt,0pt) -- % add pt to the y-coordinate
         node[midway, above]{*} ++(30pt,0pt);    % add pt to the y-coordinate
   \draw [arrows={Bar[left]-Bar[right]}, shorten <= 5pt, shorten >=-5pt] 
        (axis cs:Baseline,0.13) -- node[midway, above]{*} (axis cs:Stimulus,0.13);
\legend{neutral,emotional}
\end{axis}
\end{tikzpicture}

\end{document}

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