我想手动延伸 y 轴以包含零

Question

我有以下箱线图：

\documentclass{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.8}
\usepgfplotslibrary{statistics}
\begin{document}
\begin{tikzpicture}
  \begin{axis}
    [title = {Deletion of Focal and Arm-level SCNAs},ylabel = {$log_{2}(I_{C}/I_{N})$},
    boxplot/draw direction=y,
    xtick={1,2},
    xticklabels={Focal, Arm}
    ]
    \addplot+[mark options = {blue},
    boxplot prepared={
      lower whisker=-0.9197604,
      lower quartile=-0.4621040,
      median=-0.2362183,
      upper quartile=-0.1566109,
      upper whisker=-0.1003486
    }, color = blue 
    ] coordinates {};
     \addplot+[mark = *,mark options = {blue},
    boxplot prepared={
     lower whisker=-0.2970707,
     lower quartile=-0.2019435,
     median=-0.1603655,
     upper quartile=-0.1199740,
     upper whisker=-0.1012605
    }, color = blue
    ] coordinates {(0,-0.3299711)(0,-0.3299711)(0,-0.3642782)(0,-0.3930741)(0,-0.4372732)(0,-0.6161027)};
     \draw[black, dashed]
      (axis cs:0, -0.1) coordinate (tmp)
      (current axis.west |- tmp) -- (current axis.east |- tmp);
    \end{axis}
\end{tikzpicture}
\hspace{0.15cm}
\end{document}

得到：

我想修改 yaxis，以便它可以在标签中包含零。有什么简单的技巧吗？谢谢！

Answer 1

使用 pgfplots 文档进行简单检查http://texdoc.net/texmf-dist/doc/latex/pgfplots/pgfplots.pdf第 223 页，产生以下单行编辑：

\documentclass{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.8}
\usepgfplotslibrary{statistics}
\begin{document}
\begin{tikzpicture}
  \begin{axis}
    [title = {Deletion of Focal and Arm-level SCNAs},ylabel = {$log_{2}(I_{C}/I_{N})$},
    boxplot/draw direction=y,
    xtick={1,2},
    xticklabels={Focal, Arm},
    ymin=-1, ymax=0  %%%%%%%%%%%%%%%%%%%%%%%%%%% One Line edit
    ]
    \addplot+[mark options = {blue},
    boxplot prepared={
      lower whisker=-0.9197604,
      lower quartile=-0.4621040,
      median=-0.2362183,
      upper quartile=-0.1566109,
      upper whisker=-0.1003486
    }, color = blue 
    ] coordinates {};
     \addplot+[mark = *,mark options = {blue},
    boxplot prepared={
     lower whisker=-0.2970707,
     lower quartile=-0.2019435,
     median=-0.1603655,
     upper quartile=-0.1199740,
     upper whisker=-0.1012605
    }, color = blue
    ] coordinates {(0,-0.3299711)(0,-0.3299711)(0,-0.3642782)(0,-0.3930741)(0,-0.4372732)(0,-0.6161027)};
     \draw[black, dashed]
      (axis cs:0, -0.1) coordinate (tmp)
      (current axis.west |- tmp) -- (current axis.east |- tmp);
    \end{axis}
\end{tikzpicture}
\hspace{0.15cm}
\end{document}