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PGFplots：没有显示任何标记

tag-icon • tag-icon tikz-pgf pgfplots pgfplotstable
PGFplots：没有显示任何标记

我有标准差条，但没有符号标记。如何才能显示一个？

我从中获取了统计代码TikZ：如果用于 tikzpicture，如何将特定表传递给 \pgfplotstableset

\documentclass[tikz]{standalone}

\usepackage{pgfplots}
\usepackage{pgfplotstable}
\usepackage{filecontents}
\pgfplotsset{compat = 1.10}

%% Code chunk for statistics starts here...
\newcommand{\calcrowmean}{
  \def\rowmean{0}
  \pgfmathparse{\pgfkeysvalueof{/pgfplots/table/summary statistics/end index}-\pgfkeysvalueof{/pgfplots/table/summary statistics/start index}+1}
  \edef\numberofcols{\pgfmathresult}
  % ... loop over all columns, summing up the elements
  \pgfplotsforeachungrouped \col in {\pgfkeysvalueof{/pgfplots/table/summary statistics/start index},...,\pgfkeysvalueof{/pgfplots/table/summary statistics/end index}}{
    \pgfmathparse{\rowmean+\thisrowno{\col}/\numberofcols}
    \edef\rowmean{\pgfmathresult}
  }
}
\newcommand{\calcstddev}{
  \def\rowstddev{0}
  \calcrowmean
  \pgfplotsforeachungrouped \col in {\pgfkeysvalueof{/pgfplots/table/summary statistics/start index},...,\pgfkeysvalueof{/pgfplots/table/summary statistics/end index}}{
    \pgfmathparse{\rowstddev+(\thisrowno{\col}-\rowmean)^2/(\numberofcols-1)}
    \edef\rowstddev{\pgfmathresult}
  }
  \pgfmathparse{sqrt(\rowstddev)}
}

\pgfplotstableset{
  mystat/.style = {
    summary statistics/start index/.initial=1,
    summary statistics/end index/.initial=3,
    create col/mean/.style={
      /pgfplots/table/create col/assign/.code={% In each row ... 
        \calcrowmean
        \pgfkeyslet{/pgfplots/table/create col/next content}\rowmean
      }
    },
    create col/standard deviation/.style={
      /pgfplots/table/create col/assign/.code={% In each row ... 
        \calcstddev
        \pgfkeyslet{/pgfplots/table/create col/next content}\pgfmathresult
      }
    }
  }
}
%% ...code chunk for statistics ends here

\begin{document}

\begin{filecontents*}{inhibdata.txt}
  x rep1 rep2 rep3 rep4 rep5 rep6 rep7 rep8
  -6.60206 0.4707758 0.471134 0.464 0.4738401 0.4835494 0.4763314 0.4777448 0.4634806
  -6.60206 0.2826772 0.2869296 0.2830769 0.2863636 0.2739131 0.2830051 0.2679083 0.263196
\end{filecontents*}

\pgfplotstableset{
  mystat,
  create on use/mean/.style={create col/mean},
  create on use/stddev/.style={create col/standard deviation}
}

\begin{tikzpicture}
  \begin{axis}[
    align = center,
    xmin = -8.6,
    xmax = -5,
    ymin = 0.15,
    ymax = 0.65,
    xtick = {-8, -7, ..., -5}
    ]
    \addplot[only marks, mark = circle, red, error bars/.cd, y dir = both,
    y explicit] table[x = x, y = mean, y error = stddev]{inhibdata.txt};
    \legend{$Z' = 0.757$}; 
  \end{axis}
\end{tikzpicture}
\end{document}

我相信由于 SD 条太小所以pgfplots不会放入符号。

答案1

我不认为mark=circle这是有效的。但是，使用是有效的mark = o，但不确定这在那种情况下是否有助于显示错误栏：

在此处输入图片描述

笔记：

  • 要获得实心圆圈，请使用mark = *，并mark size=0.5pt根据需要调整大小。

代码：

\documentclass[tikz]{standalone}

\usepackage{pgfplots}
\usepackage{pgfplotstable}
\usepackage{filecontents}
%\pgfplotsset{compat = 1.10}

%% Code chunk for statistics starts here...
\newcommand{\calcrowmean}{
  \def\rowmean{0}
  \pgfmathparse{\pgfkeysvalueof{/pgfplots/table/summary statistics/end index}-\pgfkeysvalueof{/pgfplots/table/summary statistics/start index}+1}
  \edef\numberofcols{\pgfmathresult}
  % ... loop over all columns, summing up the elements
  \pgfplotsforeachungrouped \col in {\pgfkeysvalueof{/pgfplots/table/summary statistics/start index},...,\pgfkeysvalueof{/pgfplots/table/summary statistics/end index}}{
    \pgfmathparse{\rowmean+\thisrowno{\col}/\numberofcols}
    \edef\rowmean{\pgfmathresult}
  }
}
\newcommand{\calcstddev}{
  \def\rowstddev{0}
  \calcrowmean
  \pgfplotsforeachungrouped \col in {\pgfkeysvalueof{/pgfplots/table/summary statistics/start index},...,\pgfkeysvalueof{/pgfplots/table/summary statistics/end index}}{
    \pgfmathparse{\rowstddev+(\thisrowno{\col}-\rowmean)^2/(\numberofcols-1)}
    \edef\rowstddev{\pgfmathresult}
  }
  \pgfmathparse{sqrt(\rowstddev)}
}

\pgfplotstableset{
  mystat/.style = {
    summary statistics/start index/.initial=1,
    summary statistics/end index/.initial=3,
    create col/mean/.style={
      /pgfplots/table/create col/assign/.code={% In each row ... 
        \calcrowmean
        \pgfkeyslet{/pgfplots/table/create col/next content}\rowmean
      }
    },
    create col/standard deviation/.style={
      /pgfplots/table/create col/assign/.code={% In each row ... 
        \calcstddev
        \pgfkeyslet{/pgfplots/table/create col/next content}\pgfmathresult
      }
    }
  }
}
%% ...code chunk for statistics ends here

\begin{document}

\begin{filecontents*}{inhibdata.txt}
  x rep1 rep2 rep3 rep4 rep5 rep6 rep7 rep8
  -6.60206 0.4707758 0.471134 0.464 0.4738401 0.4835494 0.4763314 0.4777448 0.4634806
  -6.60206 0.2826772 0.2869296 0.2830769 0.2863636 0.2739131 0.2830051 0.2679083 0.263196
\end{filecontents*}

\pgfplotstableset{
  mystat,
  create on use/mean/.style={create col/mean},
  create on use/stddev/.style={create col/standard deviation}
}

\begin{tikzpicture}
  \begin{axis}[
    align = center,
    xmin = -8.6,
    xmax = -5,
    ymin = 0.15,
    ymax = 0.65,
    xtick = {-8, -7, ..., -5}
    ]
    \addplot[only marks, mark = o, red, error bars/.cd, y dir = both,
    y explicit] table[x = x, y = mean, y error = stddev]{inhibdata.txt};
    \legend{$Z' = 0.757$}; 
  \end{axis}
\end{tikzpicture}
\end{document}

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