[Tex/LaTex] PGF boxplot with annotations

annotationsboxplotpgfplots

I read the section about boxplots in the pgfplots manual but I cant get it to work.
I need to display the median inside the boxplot above or below the line of the median.
How can I add the values to the Plot?
Here is my code so far:

\documentclass[12pt,tikz,border=10pt]{standalone}

\usepackage{pgfplots}
\pgfplotsset{compat=newest}
\usetikzlibrary{pgfplots.statistics}


\begin{document}


\begin{tikzpicture}
\begin{axis}[
width  = .5\textwidth,
height = 12cm,
axis x line*=bottom,
axis y line=left,
enlarge y limits,
ymajorgrids,
major x tick style = transparent,
ylabel = {Time},
ymin=8.15,
ymax=40,
xmin=0,
xmax=3,
xticklabels={,,},
xtick={1,...,3},
boxplot/draw direction=y,
]

\addplot+[boxplot prepared={
    lower whisker=9.06, lower quartile=9.29,
    median=12.10,
    upper quartile=13.125, upper whisker=14.05,
    box extend=0.4}, color=blue
]
coordinates {};


\addplot+[boxplot prepared={
    lower whisker=19.22, lower quartile=20.255,
    median=21.58,
    upper quartile=30.15, upper whisker=30.15,
    box extend=0.4}, color=red]
coordinates {(0, 37.05)};

\end{axis}

\end{tikzpicture}
\end{document}

Best Answer

Right after the coordinates for the boxplot, add the code for one of the nodes found in the example in the manual. I just changed left to above/below, and reduced the inner sep to get the number closer to the line.

\documentclass[12pt,tikz,border=10pt]{standalone}

\usepackage{pgfplots}
\pgfplotsset{compat=newest}
\usetikzlibrary{pgfplots.statistics}

\begin{document}   
\begin{tikzpicture}
\begin{axis}[
width  = .5\textwidth,
height = 12cm,
axis x line*=bottom,
axis y line=left,
enlarge y limits,
ymajorgrids,
major x tick style = transparent,
ylabel = {Time},
ymin=8.15,
ymax=40,
xmin=0,
xmax=3,
xticklabels={,,},
xtick={1,...,3},
boxplot/draw direction=y,
]

\addplot+[boxplot prepared={
    lower whisker=9.06, lower quartile=9.29,
    median=12.10,
    upper quartile=13.125, upper whisker=14.05,
    box extend=0.4}, color=blue
]
coordinates {}
node[above,inner sep=1pt,font=\tiny] at
(boxplot box cs: \boxplotvalue{median},0.5)
{\pgfmathprintnumber{\boxplotvalue{median}}};;


\addplot+[boxplot prepared={
    lower whisker=19.22, lower quartile=20.255,
    median=21.58,
    upper quartile=30.15, upper whisker=30.15,
    box extend=0.4}, color=red]
coordinates {(0, 37.05)}
node[above,inner sep=1pt,font=\tiny] at
(boxplot box cs: \boxplotvalue{median},0.5)
{\pgfmathprintnumber{\boxplotvalue{median}}};

\end{axis}

\end{tikzpicture}
\end{document}

Related Solutions

[Tex/LaTex] plotting two time series with bounds

This happens because PGFPlots only uses one "stack" per axis: You're stacking the second confidence interval on top of the first. The easiest way to fix this is probably to use the approach described in "Is there an easy way of using line thickness as error indicator in a plot?": After plotting the first confidence interval, stack the upper bound on top again, using stack dir=minus. That way, the stack will be reset to zero, and you can draw the second confidence interval in the same fashion as the first:

\documentclass{standalone}
\usepackage{pgfplots, tikz}

\usepackage{pgfplotstable}

\pgfplotstableread{
temps   y_h y_h__inf    y_h__sup    y_f y_f__inf    y_f__sup    

1   0.237340    0.135170    0.339511    0.237653    0.135482    0.339823    
2   0.561320    0.422007    0.700633    0.165871    0.026558    0.305184    
3   0.694760    0.534205    0.855314    0.074856    -0.085698   0.235411    
4   0.728306    0.560179    0.896432    0.003361    -0.164765   0.171487    
5   0.711710    0.544944    0.878477    -0.044582   -0.211349   0.122184    
6   0.671241    0.511191    0.831291    -0.073347   -0.233397   0.086703    
7   0.621177    0.471219    0.771135    -0.088418   -0.238376   0.061540    
8   0.569354    0.431826    0.706882    -0.094382   -0.231910   0.043146    
9   0.519973    0.396571    0.643376    -0.094619   -0.218022   0.028783    
10  0.475121    0.366990    0.583251    -0.091467   -0.199598   0.016664    
}{\table}

\begin{document}
\begin{tikzpicture}

    \begin{axis}
    % y_h confidence interval
    \addplot [stack plots=y, fill=none, draw=none, forget plot]   table [x=temps, y=y_h__inf]   {\table} \closedcycle;
    \addplot [stack plots=y, fill=gray!50, opacity=0.4, draw opacity=0, area legend]   table [x=temps, y expr=\thisrow{y_h__sup}-\thisrow{y_h__inf}]   {\table} \closedcycle;
    % subtract the upper bound so our stack is back at zero
    \addplot [stack plots=y, stack dir=minus, forget plot, draw=none] table [x=temps, y=y_h__sup] {\table};

    % y_f confidence interval
    \addplot [stack plots=y, fill=none, draw=none, forget plot]   table [x=temps, y=y_f__inf]   {\table} \closedcycle;
    \addplot [stack plots=y, fill=gray!50, opacity=0.4, draw opacity=0, area legend]   table [x=temps, y expr=\thisrow{y_f__sup}-\thisrow{y_f__inf}]   {\table} \closedcycle;

    % the line plots (y_h and y_f)    
    \addplot [stack plots=false, very thick,smooth,blue]  table [x=temps, y=y_h]   {\table};
    \addplot [stack plots=false, very thick,smooth,blue]  table [x=temps, y=y_f]   {\table};
    \end{axis}

\end{tikzpicture}
\end{document}

[Tex/LaTex] How to hide empty (value 0) ybars with pgfplots

You can use

 y filter/.expression={y==0 ? nan : y}

in the options of \addplot.

\documentclass{article}

% ---------------------------------- tikz
\usepackage{pgfplots}          % to print charts
\pgfplotsset{compat=1.12}

\begin{document}

\begin{figure}
  \centering
  \begin{tikzpicture}
    \begin{axis} [
      % general
      ybar,
      scale only axis,
      height=0.5\textwidth,
      width=1.2\textwidth,
      ylabel={\# Dots},
      nodes near coords,
      xlabel={Variation},
      xticklabel style={
        rotate=90,
        anchor=east,
      },
      %enlarge x limits={abs value={3}},
      ]
      \addplot+[y filter/.expression={y==0 ? nan : y}] table [
        x=grade,
        y=value,
      ] {
grade   value
-11 0
-10 0
-9  0
-8  0
-7  0
-6  0
-5  3
-4  1
-3  2
-2  15
-1  11
0   179
1   8
2   1
3   0
4   1
5   2
6   0
7   0
8   0
9   0
10  0
11  0
      };
    \end{axis}
  \end{tikzpicture}
\end{figure}
\end{document}

Best Answer

Related Solutions

[Tex/LaTex] plotting two time series with bounds

[Tex/LaTex] How to hide empty (value 0) ybars with pgfplots

Related Question