[Tex/LaTex] Add labels to tikzpicture plots

tikz-pgf

How do you add labels like A and B to the two plots below?

I tried some variations of \node (A) at ([xshift=-1.3cm, yshift=1cm]group c1r1.north west) {\color{black} (A)};, but this didn't work, mainly because I am not using a group plots environment. Here is my code:

\documentclass[]{article}
    \usepackage{pgfplots, alphalph}
    \usepgfplotslibrary{groupplots}
    \pagenumbering{gobble}

\begin{document}

\begin{figure}
\hspace*{-3.5cm}
\centering
\begin{minipage}{.5\textwidth}
  \centering
  \begin{tikzpicture}
\begin{axis}[ 
    title={My title},
    axis lines=middle,
    axis line style={->},
    ylabel near ticks,
    xlabel near ticks,
    scaled y ticks = false,
    yticklabel style={/pgf/number format/fixed},
    xlabel={x-label},
    ylabel={y-label}]


\end{axis} 
\end{tikzpicture}
\end{minipage}%
\begin{minipage}{1.3\textwidth}
  \centering
  \begin{tikzpicture}
\begin{axis}[ 
    title={My title},
    axis lines=middle,
    axis line style={->},
    ylabel near ticks,
    xlabel near ticks,
    scaled y ticks = false,
    yticklabel style={/pgf/number format/fixed},
    xlabel={x-label},
    ylabel={y-label}]
\end{axis} 
\end{tikzpicture}
\end{minipage}
\end{figure}

\end{document}

Best Answer

You want to put A and B at the upper right corner of the plots?

Then the node current bounding box can be used. This method works independently from package pgfplots.

\documentclass[]{article}
    \usepackage{pgfplots, alphalph}
    \usepgfplotslibrary{groupplots}
    \pagenumbering{gobble}

\begin{document}

\begin{figure}
\hspace*{-3.5cm}
\centering
\begin{minipage}{.5\textwidth}
  \centering
  \begin{tikzpicture}
\begin{axis}[
    title={My title},
    axis lines=middle,
    axis line style={->},
    ylabel near ticks,
    xlabel near ticks,
    scaled y ticks = false,
    yticklabel style={/pgf/number format/fixed},
    xlabel={x-label},
    ylabel={y-label}]
\end{axis}
  \node[below right]
    at (current bounding box.north west) {A};
\end{tikzpicture}
\end{minipage}%
\begin{minipage}{1.3\textwidth}
  \centering
  \begin{tikzpicture}
\begin{axis}[
    title={My title},
    axis lines=middle,
    axis line style={->},
    ylabel near ticks,
    xlabel near ticks,
    scaled y ticks = false,
    yticklabel style={/pgf/number format/fixed},
    xlabel={x-label},
    ylabel={y-label}]
\end{axis}
  \node[below right]
    at (current bounding box.north west) {B};
\end{tikzpicture}
\end{minipage}
\end{figure}

\end{document}

Related Solutions

[Tex/LaTex] Polar plots, add degree symbol and hide the radius axis labels

For printing the degree symbol in the tick labels, you can set xticklabel=$\pgfmathprintnumber{\tick}^\circ$ (\pgfmathprintnumber makes sure that the numbers are rounded nicely, \tick contains the label value, and \circ is the symbol).

The horizontal black line is the y axis, which you can hide using the key hide y axis.

Bonus hints: Instead of using empty legend entries, you can add forget plot to the helper plots. That way they won't get a legend entry. In your case, you don't even need the helper plots: You can let all plots run from 0 to 360 degrees, and use abs(<expr>) instead of just <expr> to get the same results.

For line plots, you don't need to say color=red, you can just say red.

Options that are common to all plots can be set using every axis plot/.style={thick, samples=100, domain=0:360}, which helps keep the code leaner and more maintainable.

\documentclass[border=5mm]{standalone}

\usepackage{pgfplots}
\usepgfplotslibrary{polar}
\begin{document}

 \begin{tikzpicture} % p56
    \begin{polaraxis} [
            ytick=\empty,
            hide y axis,
            xticklabel=$\pgfmathprintnumber{\tick}^\circ$,
            legend entries={
                Omnidirectional,
                Figure-8,
                Subcardioid,
                Cardioid,
                Supercardioid,
                Hypercardioid
            },
            legend cell align=left,
            legend style={
                at={(1.7,0.5)},
                anchor=east
            },
            every axis plot/.style={
                thick,
                samples=100,
                domain=0:360
            }
        ]
        %Ominidirectional
    \addplot[black]{1};
        %Figure 8 (Bidirectional)
    \addplot[blue]{abs(cos(x))};
        %subcardiod
    \addplot[green]{0.7 + 0.3*cos(x)};
        %cardiod
    \addplot[brown]{0.5 + 0.5*cos(x)};
        %Supercardioid
    \addplot[red]{abs(0.37 + 0.63*cos(x))};
        %Hypercardioid
    \addplot[violet]{abs(0.25 + 0.75*cos(x))};
    \end{polaraxis}
\end{tikzpicture}
\end{document}

[Tex/LaTex] Box Plots in tikzpicture – Two Plots per y tick

Perhaps something like this, though some manual fiddling is required. Start by reducing the height of the boxes, by adding /pgfplots/boxplot/box extend=0.3 to the axis options. The default value is 0.8, adjust this to your liking.

Then for each plot, set draw position to some value slightly above or below the tick value. E.g. draw position=1.2 and 0.8 as in this example.

\documentclass{article}
\usepackage{pgfplots}
\usepgfplotslibrary{statistics}
\begin{document}

\begin{tikzpicture}
  \begin{axis} [
        title=Scenario 1,
        height=6.0cm, width=8.0cm,
        xmin=6, xmax=20, xtick={6,8,...,20},
    ytick={1,2,3},
    yticklabels={Mon, Tue, Wed},
        legend style={at={(0.5,-0.2)}, anchor=north, legend columns=-1},
    ymin=0,ymax=4,
    /pgfplots/boxplot/box extend=0.3
    ]
    \addplot+ [
    boxplot prepared={
      upper quartile=15,
      lower quartile=8,
      upper whisker=19,
      lower whisker=7,
      draw position=1.2
    },
    ] coordinates {};
    \addplot+ [
    boxplot prepared={
      upper quartile=17,
      lower quartile=10,
      upper whisker=19,
      lower whisker=7,
      draw position=0.8
    },
    ] coordinates {};
  \end{axis}
\end{tikzpicture}

\end{document}

Best Answer

Related Solutions

[Tex/LaTex] Polar plots, add degree symbol and hide the radius axis labels

[Tex/LaTex] Box Plots in tikzpicture – Two Plots per y tick

Related Question