Pgfplots nodes near coords with error bar

bar chartnodes-near-coordspgfplots

I am working on a horizontal bar plot with error bars. In addition I'd like to place the actual value of each bar with nodes near coords in the plot. However they tend to overlap with the positive error bar. In some cases this is easy to fix with nodes near coords style={xshift=32pt}. However that only makes sense if the error bars are roughly within the same range. Is there any way to tie the node to the positive error bar's end?

\documentclass[a4paper, BCOR=4mm, fontsize=12pt, twoside]{scrreprt}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[ngerman]{babel}

\usepackage{tikz}
\usepackage{pgfplots}
\pgfplotsset{compat=newest}
\pgfplotsset{/pgf/number format/use comma}

\begin{document}

\begin{figure}[htb]
\centering
\begin{tikzpicture} 
\begin{axis}[xbar, bar width=0.7cm, width=0.7\textwidth,
                xmin=0, xmax=7, enlarge y limits = {abs = .8},
                xmajorgrids=true, xminorgrids=true,
                major y tick style={draw=none}, minor x tick num=1,
                minor grid style={dashed},
                ytick={-1,-2}, 
                yticklabels={A,B},
                yticklabel style={align=right},
                nodes near coords, nodes near coords style={xshift=32pt},
                legend style={cells={anchor=west},at={(0.5,-0.15)},anchor=north}, legend reversed,
                ]
                
\addplot [fill=red!30, error bars/.cd, x dir=both, x explicit] coordinates {
        (4.5,-1) +- (1.197,0)
        (3.88,-2) +- (0.995,0)
    };
    
\addplot [fill=green!30, error bars/.cd, x dir=both, x explicit] coordinates {
        (5.4,-1) +- (0.7,0)
        (4.2,-2) +- (1.508,0)
    };
    
\addplot [fill=yellow!30, error bars/.cd, x dir=both, x explicit] coordinates {
        (5.4,-1) +- (0.57,0)
        (4.21,-2) +- (0.833,0)
    };
    
\end{axis}
\end{tikzpicture}
\end{figure}

\end{document}

Best Answer

All right, thanks a lot to Stefan, it actually works with inline tables! Here ist the solution:

The key properties are:

visualization depends on={\thisrow{error} \as \offset},
node near coords style={shift={(axis direction cs:\offset,0)}}

Full example:

\documentclass[a4paper, fontsize=12pt]{scrreprt}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}

\usepackage{tikz}
\usepackage{pgfplots}
\pgfplotsset{compat=newest}
\pgfplotsset{/pgf/number format/use comma}

\begin{document}

\begin{tikzpicture} 
\begin{axis}[xbar, bar width=0.7cm, width=0.7\textwidth,
                xmin=0, xmax=7, enlarge y limits = {abs = .8},
                xmajorgrids=true, xminorgrids=true,
                major y tick style={draw=none}, minor x tick num=1,
                minor grid style={dashed},
                ytick={-1,-2}, 
                yticklabels={A,B},
                yticklabel style={align=right},
                nodes near coords,
                visualization depends on={\thisrow{error} \as \offset},
                node near coords style={shift={(axis direction cs:\offset,0)}}
                ]
                
\addplot [fill=red!30, error bars/.cd, x dir=both, x explicit] table [x=value, y=position, x error=error] {
        value   position    error
        4.5     -1          1.197
        3.88    -2          0.995
    };
    
\addplot [fill=green!30, error bars/.cd, x dir=both, x explicit] table [x=value, y=position, x error=error] {
        value   position    error
        5.4     -1          0.7
        4.2     -2          1.508
    };
    
\addplot [fill=yellow!30, error bars/.cd, x dir=both, x explicit] table [x=value, y=position, x error=error] {
        value   position    error
        5.4     -1          0.57
        4.21    -2          0.833
    };
    
\end{axis}
\end{tikzpicture}

\end{document}

Related Solutions

[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}

[Tex/LaTex] pgfplots: percentage in matrix plot

It does not work in your MWE because you are overwriting it by also giving the option nodes near coors to the \addplot command. Remove the latter one (or specify format here), and it will print. I added a thinspace before the percentage sign, although it can also be recommended to load the siunitx package and let that format and typeset the values for you.

Anyway, here's the quickfixed version:

\documentclass[border=3pt]{standalone}
\usepackage{pgfplots}
\pgfplotsset{%
  width=5cm,
  height=18cm,
  compat=1.13,
  colormap={blackwhite}{gray(0cm)=(1); gray(1cm)=(0.5)},
  xticklabels={LPIBG, ALL, HPIBG},
  xtick={0,...,2},
  ytick=\empty
}

\begin{document}
\begin{tikzpicture}
\begin{axis}[%
  enlargelimits=false,
  xlabel style={font=\footnotesize},
  ylabel style={font=\footnotesize},
  legend style={font=\footnotesize},
  xticklabel style={font=\footnotesize},
  yticklabel style={font=\footnotesize},
  colorbar,
  colorbar style={%
    ytick={0,20,40,60,80,100},
    yticklabels={0,20,40,60,80,100},
    yticklabel={\pgfmathprintnumber\tick\,\%},
    yticklabel style={font=\footnotesize}
  },
  point meta min=0,
  point meta max=100,
  nodes near coords={\pgfmathprintnumber\pgfplotspointmeta\,\%},
  every node near coord/.append style={xshift=0pt,yshift=-7pt, black, font=\footnotesize},
]

\addplot[
matrix plot,
mesh/cols=3,
point meta=explicit]
table[meta=C]{
  x y C
  0 0 80
  1 0 36
  2 0 40
  0 1 64
  1 1 80
  2 1 60
  0 2 52
  1 2 84
  2 2 72
  0 3 72
  1 3 28
  2 3 32
  0 4 56
  1 4 84
  2 4 80
  0 5 72
  1 5 52
  2 5 44
  0 6 4
  1 6 84
  2 6 41
  0 7 37
  1 7 69
  2 7 84
  0 8 63
  1 8 53
  2 8 82
  0 9 78
  1 9 74
  2 9 39
  0 10 39
  1 10 63
  2 10 88
  0 11 76
  1 11 74
  2 11 49
  0 12 39
  1 12 6
  2 12 88
  0 13 46
  1 13 33
  2 13 75
  0 14 88
  1 14 67
  2 14 54
  0 15 79
  1 15 83
  2 15 75
  0 16 50
  1 16 46
  2 16 71
  0 17 92
  1 17 71
  2 17 75
  0 18 46
  1 18 33
  2 18 8
};
\end{axis}
\end{tikzpicture}
\end{document}

Best Answer

Related Solutions

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

[Tex/LaTex] pgfplots: percentage in matrix plot

Related Question