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为 pgfplot 图片添加额外标签

tag-icon • tag-icon tikz-pgf pgfplots dateplot
为 pgfplot 图片添加额外标签

我想将开始和结束标签作为额外标签​​添加到 pgfplot。示例如下：

\documentclass[border=2mm]{standalone}
\usepackage{pgfplots}
\usepgfplotslibrary{dateplot}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
axis x line=middle,
axis y line=middle,
xmajorgrids={false},
xminorgrids={false},
ymajorgrids={true},
yminorgrids={false},
minor tick num=1,
      date ZERO=2017-09-27 13:41:49.913,xmin=2017-09-27 13:35:00,xmax=2017-09-27 14:15:55:00,
      date coordinates in=x,
      xtick distance=0.003472222222222222,% 5min, 5/60/24 = 0.003472222222222222
      xticklabel style={
        rotate=90,
        anchor=near xticklabel,
      },
      xticklabel=\hour:\minute:\second,
      x tick label as interval,
      ytick distance=5,
      ylabel=\%,
      yticklabel={\pgfmathprintnumber{\tick}\%},
      extra x ticks={2017-09-27 13:41:49.913,2017-09-27 14:15:46.336},
      extra x tick labels={13:41:49,14:15:46},
      ]
      \addplot table [col sep=comma,x=col1,y=col2,mark=] {
col1,col2
2017-09-27 13:41:49.913,9.08
2017-09-27 13:55:16.793,0.63
2017-09-27 14:05:42.076,14.84
2017-09-27 14:15:46.336,0.37
};
\end{axis}
\end{tikzpicture}
\end{document}

应该在第一个点和最后一个点处添加两个额外的 xlabel。

2017-09-27 13:41:49.913 --> 13:41:49.913
2017-09-27 14:15:46.336  --> 14:15:46.336

但实际上，只添加了一个标签，并且位置不在开始或结束。

查看输出： 在此处输入图片描述

答案1

这是由于您添加了 造成的x tick label as interval，这也适用于额外的刻度。您有两个刻度，因此您会在中间得到一个标签。

还要注意，秒数始终为零，因此输入中是否有秒数据实际上并不重要。13:41:00将绘制到与相同的点13:41:59。

代码输出

\documentclass[border=2mm]{standalone}
\usepackage{pgfplots}
\usepgfplotslibrary{dateplot}
\pgfplotsset{compat=1.15}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
width=12cm,height=5cm,
axis x line=middle,
axis y line=middle,
xmajorgrids={false},
xminorgrids={false},
ymajorgrids={true},
yminorgrids={false},
minor tick num=1,
      date ZERO=2017-09-27 13:41:49.913,xmin=2017-09-27 13:35:00,xmax=2017-09-27 14:15:55:00,
      date coordinates in=x,
      xtick distance=0.003472222222222222,% 5min, 5/60/24 = 0.003472222222222222
      xticklabel style={
        rotate=90,
        anchor=near xticklabel,
      },
      xticklabel=\hour:\minute:\second,
      ytick distance=5,
      ylabel=\%,
      yticklabel={\pgfmathprintnumber{\tick}\%},
      extra x ticks={2017-09-27 13:41:49.913,2017-09-27 14:15:46.336},
      extra x tick labels={13:41:49,14:15:46},
      ]
      \addplot table [col sep=comma,x=col1,y=col2,mark=] {
col1,col2
2017-09-27 13:41:49.913,9.08
2017-09-27 13:55:16.793,0.63
2017-09-27 14:05:42.076,14.84
2017-09-27 14:15:46.336,0.37
};
\end{axis}
\end{tikzpicture}
\end{document}

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