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在 pgf 图中对齐图和其他几个相关问题

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在 pgf 图中对齐图和其他几个相关问题

我正在摸索着使用 pgfplots。一页上有 3 个图。我有几个问题：

  1. 图中的条形在不同程度上浮动在轴上方。如何将条形固定到轴上？

2.我希望上部条形图和下部条形图之间有更多间距，我该如何实现？我试过 \vspace，但没有效果。

请参阅我的 MWE

\documentclass{article}
\usepackage{booktabs, caption}
\usepackage{tabularx}
\usepackage[online]{threeparttable}
\usepackage{siunitx}
\usepackage{graphics}
\usepackage{adjustbox}
\usepackage{pgfplots}
\pgfplotsset{compat=1.9}
\usepackage{amsmath}

\begin{document}

\begin{tikzpicture} [baseline]
    \begin{axis}[
      x=1.5cm,
      bar width=.4cm,
       %enlarge x limits=1,
      xticklabels={0,1,2,$\geq3$},
      title= \textbf{\# of cats per week for whom I was directly repsonsible},
      title style={align=center,text width=5.2cm},
      enlargelimits=.15,
      ylabel=\textbf{Frequency},
      xlabel=\textbf{\# of cats},
      xtick={0,...,3}, % To make sure the tick labels match the data points
      xticklabel style={text height=2ex},
      nodes near coords,
      nodes near coords align={vertical}] % Make all letters the same height so they align properly
        \addplot[ybar] coordinates {
            (0, 4)
            (1, 9)
            (2, 26)
            (3, 33)
        };
    \end{axis}
 \end{tikzpicture} 
\hspace{1cm} 
 \begin{tikzpicture}[baseline]
        \begin{axis}[
          xshift=4em,          
          x=1.5cm,
          bar width=.4cm,
           %enlarge x limits=1,
          xticklabels={0,1,2,$\geq3$},
          title= \textbf{Avg \# of cats from whom I obtained a complete physical exam and presented the results to the Vet was:                 
          },
          title style={align=center,text width=7cm},
          enlargelimits=.15,
          ylabel=\textbf{Frequency},
          xlabel=\textbf{\# of cats},
          xtick={0,...,3}, % To make sure the tick labels match the data points
          xticklabel style={text height=2ex},
          nodes near coords,
          nodes near coords align={vertical}] % Make all letters the same height so they align properly
            \addplot[ybar] coordinates {
                (0, 3)
                (1, 17)
                (2, 20)
                (3, 31)
            };
        \end{axis}
\end{tikzpicture}
\vspace{5pt}
 \begin{tikzpicture}[baseline]
        \begin{axis}[
          xshift=4em,          
          x=1.5cm,
          bar width=.4cm,
           %enlarge x limits=1,
          xticklabels={0,1,2,$\geq3$},
          title= \textbf{Avg \# of procedures (e.g., lumbar punctures) that I was allowed to perform was:},
          title style={align=center,text width=7cm},
          enlargelimits=.15,
          ylabel=\textbf{Frequency},
          xlabel=\textbf{\# of procedures},
          xtick={0,...,3}, % To make sure the tick labels match the data points
          xticklabel style={text height=2ex},
          nodes near coords,
          nodes near coords align={vertical}] % Make all letters the same height so they align properly
            \addplot[ybar] coordinates {
                (0, 53)
                (1, 8)
                (2, 7)
                (3, 3)
            };
        \end{axis}
\end{tikzpicture}


\end{document}

答案1

如图所示https://tex.stackexchange.com/a/208681/32374，您需要更改指定轴的放大方式。而不是enlargelimits=0.15，而是使用

enlarge x limits=.15,
enlarge y limits={0.15, upper},

然后，我还必须指定ymin=0。我还编辑了您的轴以使用样式ybar而不是图，因为这会设置刻度线等，因此它们（恕我直言）看起来会更好一些。

对于第二个问题，您只需通过插入一些额外的空白行将第二张图移到新段落即可。然后您的\vspace代码就会起作用。请参见下面的修复示例。请注意，我在此示例中“最小化”了您的序言。

最后，最新版本的pgfplots截至撰写本文时1.11- 您不使用它的原因是什么？

\documentclass{article}
\usepackage[margin=1in]{geometry}
\pagestyle{empty}
\usepackage{pgfplots}
\pgfplotsset{compat=1.9}

\begin{document}

\begin{tikzpicture}[baseline]
    \begin{axis}[
        x=1.5cm,
        bar width=.4cm,
        %enlarge x limits=1,
        xticklabels={0,1,2,$\geq3$},
        title= \textbf{\# of cats per week for whom I was directly repsonsible},
        title style={align=center,text width=5.2cm},
        % Change these lines
        enlarge x limits=.15,
        enlarge y limits={0.15, upper},
        ymin=0,
        ybar,
        %Change the above lines
        ylabel=\textbf{Frequency},
        xlabel=\textbf{\# of cats},
        xtick={0,...,3}, % To make sure the tick labels match the data points
        xticklabel style={text height=2ex},
        nodes near coords,
        nodes near coords align={vertical} % Make all letters the same height so they align properly
    ]
    \addplot[black, fill=none] coordinates {
        (0, 4)
        (1, 9)
        (2, 26)
        (3, 33)
    };
    \end{axis}
\end{tikzpicture}
%
\hspace{1cm}
%
\begin{tikzpicture}[baseline]
    \begin{axis}[
        xshift=4em,
        x=1.5cm,
        bar width=.4cm,
        %enlarge x limits=1,
        xticklabels={0,1,2,$\geq3$},
        title= \textbf{Avg \# of cats from whom I obtained a complete physical exam and presented the results to the Vet was:
        },
        title style={align=center,text width=7cm},
        % Change these lines
        enlarge x limits=.15,
        enlarge y limits={0.15, upper},
        ymin=0,
        ybar,
        %Change the above lines
        ylabel=\textbf{Frequency},
        xlabel=\textbf{\# of cats},
        xtick={0,...,3}, % To make sure the tick labels match the data points
        xticklabel style={text height=2ex},
        nodes near coords,
        nodes near coords align={vertical}
    ] % Make all letters the same height so they align properly
    \addplot[black, fill=none] coordinates {
            (0, 3)
            (1, 17)
            (2, 20)
            (3, 31)
    };
    \end{axis}
\end{tikzpicture}

\vspace{1in}

\begin{tikzpicture}[baseline]
    \begin{axis}[
        xshift=4em,
        x=1.5cm,
        bar width=.4cm,
        %enlarge x limits=1,
        xticklabels={0,1,2,$\geq3$},
        title= \textbf{Avg \# of procedures (e.g., lumbar punctures) that I was allowed to perform was:},
        title style={align=center,text width=7cm},
        % Change these lines
        enlarge x limits=.15,
        enlarge y limits={0.15, upper},
        ymin=0,
        ybar,
        %Change the above lines
        ylabel=\textbf{Frequency},
        xlabel=\textbf{\# of procedures},
        xtick={0,...,3}, % To make sure the tick labels match the data points
        xticklabel style={text height=2ex},
        nodes near coords,
        nodes near coords align={vertical} % Make all letters the same height so they align properly
        ]
    \addplot[black, fill=none] coordinates {
    (0, 53)
    (1, 8)
    (2, 7)
    (3, 3)
    };
    \end{axis}
\end{tikzpicture}
\end{document}

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