[Tex/LaTex] pgfplots: Pointwise Positioning of Explicit Point Meta

nodespgfplots

I am drawing several diagrams like the following one:

I would like to label the important points with $P_1$ , $P_2$ and so on. The problem is that there is no global position for the nodes that fits for all.

I don't want that the label to cover the diagram line.

Is there a clever way to avoid that?
Can I have a fourth column (s, F, Label and Position) with N(orth), W(est), S(outh) and E(ast) for example?
Have you a good idea?

Here's my code so far:

\documentclass{standalone}

\usepackage{pgfplots}

\begin{document}

\begin{tikzpicture}
\begin{axis}[
    axis lines = middle,
    enlargelimits = true,
    xlabel = {Travel $s$ in mm},
    ylabel = {Force $F$ in N},
    width =120mm,
    height= 80mm,
    title = {Force-Travel-Diagram},
]
\addplot[
    line width=1pt,
    mark=*,
    x=s,
    y=F,
    nodes near coords,
    point meta=explicit symbolic,
    nodes={font=\small},
    nodes near coords align={anchor=west},
] table
[
row sep=\\,
meta=Label
] 
{
s F Label\\
0 0 {$P_0$}\\
0.03 2 {$P_1$}\\
0.7 6 {$P_2$}\\
0.71 5 {$P_3$}\\
1.4 12 {$P_4$}\\
};
\end{axis}
\end{tikzpicture}

\end{document}

Best Answer

You can use

visualization depends on={value \thisrow{anchor}\as\myanchor},,
every node near coord/.append style={font=\small,anchor=\myanchor}

and add a fourth column with anchors.

\documentclass{standalone}

\usepackage{pgfplots}

\begin{document}

\begin{tikzpicture}
\begin{axis}[
    axis lines = middle,
    enlargelimits = true,
    xlabel = {Travel $s$ in mm},
    ylabel = {Force $F$ in N},
    width =120mm,
    height= 80mm,
    title = {Force-Travel-Diagram},
]
\addplot[
    line width=1pt,
    mark=*,
    x=s,
    y=F,
    nodes near coords,
    point meta=explicit symbolic,
    visualization depends on={value \thisrow{anchor}\as\myanchor},,
    every node near coord/.append style={font=\small,anchor=\myanchor}
    %nodes={font=\small},
%    nodes near coords align={anchor=west},
] table
[
row sep=\\,
meta=Label
]
{
s F Label anchor\\
0 0 {$P_0$} {south west}\\
0.03 2 {$P_1$} south\\
0.7 6 {$P_2$} south\\
0.71 5 {$P_3$} north\\
1.4 12 {$P_4$} west\\
};
\end{axis}
\end{tikzpicture}

\end{document}

Remember that you can also use angles as anchors. For example,

s F Label anchor\\
0 0 {$P_0$} 120\\
0.03 2 {$P_1$} 270\\
0.7 6 {$P_2$} 270\\
0.71 5 {$P_3$} 90\\
1.4 12 {$P_4$} 180\\

works, where anchor is specified with angles giving total flexibility.

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[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

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