1

I'm having problems with the vertical alignment of my bar chart. I started using a single xbar chart for my data, but it looked terrible, since one item is very large and the other very small. So, i had the idea of making multiple charts for each item, but the don't really align.This is the first version, where the scaling is catastrophic. I want to be able to compare the different plots.

If i try to make multiple xbar charts, they are not aligned.

enter image description here

\documentclass{report}
\usepackage{pgfplots}
\usepackage{tikz}
\begin{document}
\begin{figure}
\begin{tikzpicture} 
\begin{axis}[tickwidth = 0pt,xbar, xmin=0, width=12cm, height=3.5cm, enlarge y limits=0.5, symbolic y coords={no,yes}, ytick=data, nodes near coords,y axis line style = { opacity = 0 },
   axis x line       = none ] 
\addplot coordinates {(1000000,yes) (2000000,no)}; 
\addplot coordinates {(4000000,yes) (1000000,no)}; 
\end{axis} 
\end{tikzpicture}
\begin{tikzpicture} 
\begin{axis}[  tickwidth= 0pt,xbar, xmin=0, width=12cm, height=3.5cm, enlarge y limits=0.5, symbolic y coords={noooooo,yeeeeees}, ytick=data, nodes near coords,y axis line style = { opacity = 0 },
   axis x line       = none ] 
\addplot coordinates {(3,noooooo) (7,yeeeeees)};
\addplot coordinates {(30,noooooo) (1,yeeeeees)}; 
\end{axis} 
\end{tikzpicture}
\end{figure}

\begin{figure}
\begin{tikzpicture} 
\begin{axis}[  tickwidth= 0pt,xbar, xmin=0, enlarge y limits=0.5, symbolic y coords={noooooo,yeeeeees, yes, no}, ytick=data, nodes near coords,y axis line style = { opacity = 0 },
   axis x line       = none ] 
\addplot coordinates {(3,noooooo) (7,yeeeeees) (1000000,yes) (2000000,no)};
\addplot coordinates {(30,noooooo) (1,yeeeeees)(4000000,yes) (1000000,no)}; 
\end{axis} 
\end{tikzpicture}
\end{figure}
\end{document}
1

I guess the easiest way to align the plots vertically is to simply make use of the groupplots library.

(Please note that there currently seems to be a bug when symbolic coords are used in a groupplot. That is why I needed to use a different approach to provide the data. And because I anyway was "forced" to restate the data I also switched them from coordinates to table which is much more flexible (as well).)

For the details please have a look at the comments in the code.

% used PGFPlots v1.16
\documentclass[border=5pt]{standalone}
\usepackage{pgfplots}
    % load the `groupplots` library
    \usepgfplotslibrary{groupplots}
\begin{document}
\begin{tikzpicture}
    \begin{groupplot}[
        group style={
            % define `groupplot` size (2 vertical plots) ...
            group size=1 by 2,
            % ... and the distance between the plots
            vertical sep=5mm,
        },
        % (here are your options which are in common for all plots)
        width=12cm,
        height=3.5cm,
        tickwidth=0pt,
        xbar,
        xmin=0,
        enlarge y limits={abs=0.5},     % <-- (adapted)
        ytick=data,
        nodes near coords,
        y axis line style={opacity=0},
        axis x line=none,
        legend style={
            % position the legend below the plot
            at={(0.0,-0.1)},
            anchor=north west,
            % (add the rest of style you want to use here)
        },
        % use the coordinate index for the y value
        % (which is needed after restating the data `coordinates` to a `table`)
        table/y expr={\coordindex},
    ]
    % start the first plot
    \nextgroupplot[
        % names to be stated as `yticklabels`
        % (which were before the `symbolic y coords`)
        yticklabels={no,yes},
    ]
        % restated data from `coordinates` to `table` which is much simpler
        % (one could also combine all data in a single data file and call
        %  different columns from that here)
        \addplot table {
            1000000
            2000000
        };
        \addplot table {
            4000000
            1000000
        };
    \nextgroupplot[yticklabels={noooooo,yeeeeees}]
        \addplot table {
            3
            7
        };
        \addplot table {
            30
            1
        };
        % add the legend entries to the last `\nextgroupplot`
        \legend{a,b}
    \end{groupplot}
\end{tikzpicture}
\end{document}

image showing the result of above code

  • 1
    Thank you very much, it works perfectly, but how can i add a legend in the middle underneath my bar charts? – cerdn Aug 21 '19 at 14:37
  • 1
    See my edited answer. I guess this is enough thus that you can adapt that to your needs. – Stefan Pinnow Aug 21 '19 at 14:53

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.