[Tex/LaTex] How to plot stacked pie charts using LaTeX

tikz-pgf

I need to plot the following diagram:

data-chart

But how I do not know any of the packages

datatool,
PGF/TikZ,
PSTricks,
datapie.

I know how to do simple pie charts with datapie, but this one it a bit tricky.

Best Answer

Just for fun, a TikZ solution inspired by Jake's wheelchart:

\documentclass[border=3mm]{standalone}
\usepackage{tikz}
\begin{document}

% The main macro
% #1 - List of value/color pairs
% #2 - inner radius
% #3 - outer radius
\newcommand{\wheelchart}[3]{
    % Calculate total
    \pgfmathsetmacro{\totalnum}{0}
    \foreach \value/\colour in {#1} {
        \pgfmathparse{\value+\totalnum}
        \global\let\totalnum=\pgfmathresult
    }

    % Calculate the thickness and the middle line of the wheel
    \pgfmathsetmacro{\wheelwidth}{(#3)-(#2)}
    \pgfmathsetmacro{\midradius}{(#3+#2)/2}

    % Rotate so we start from the top
    \begin{scope}[rotate=90]
    % Loop through each value set. \cumnum keeps track of where we are in the wheel
        \pgfmathsetmacro{\cumnum}{0}
        \foreach \value/\colour in {#1} {
            \pgfmathsetmacro{\newcumnum}{\cumnum + \value/\totalnum*360}

      % Draw the color segments.
            \draw[fill=\colour] (-\cumnum:#2) arc (-\cumnum:-\newcumnum:#2)--(-\newcumnum:#3) arc (-\newcumnum:-\cumnum:#3)--cycle;

       % Set the old cumulated angle to the new value
            \global\let\cumnum=\newcumnum
      }
      \end{scope}
}

\begin{tikzpicture}

% Usage: \wheelchart{<value1>/<colour1>, ...}{inner radius}{outer radius}
\wheelchart{5/yellow!70,2/purple!70,8/green!70,23/blue!70}{.5cm}{2cm}

\wheelchart{25/brown!70, 60/blue!70}{3cm}{4.5cm}

\draw[thick] (0,0)--(90:5cm);
\draw[thick] (0,1.25cm)--++(0:3mm) node[right] {No};
\draw[thick] (0,3.75cm)--++(0:3mm) node[right] {Yes};

\begin{scope}[xshift=5cm]
\draw[line width=3mm,blue!70] (0,1) -- ++(0:3mm) node[right, black] {5 years};
\draw[line width=3mm,green!70] (0,.5) -- ++(0:3mm) node[right, black] {10 years};
\draw[line width=3mm,brown!70] (0,0) -- ++(0:3mm) node[right, black] {15 years};
\draw[line width=3mm,purple!70] (0,-.5) -- ++(0:3mm) node[right, black] {20 years};
\draw[line width=3mm,yellow!70] (0,-1) -- ++(0:3mm) node[right, black] {Over 25 years};

\node[anchor=west] at (-.5,-3) {Pie Slices show Count};
\node[anchor=west, align=center] at (-.5,3) {How many years\\ experience do you};
\end{scope}
\end{tikzpicture}

\end{document}

enter image description here

Reading the data

The first objective is to read the data- because the data came from a LaTeX table, we can tell pgfplots to separate columns by & and rows by \\. There are a lot of other options for reading data, including Comma Separated Value files (.csv), for example.

\pgfplotstableread[row sep=\\,col sep=&]{
    interval & carT & carD & carR \\
    0--2     & 1.2  & 0.1  & 0.2  \\
    2--5     & 12.8 & 3.8  & 4.9  \\
    5--10    & 15.5 & 10.4 & 13.4 \\
    10--20   & 14.0 & 17.3 & 22.2 \\
    20--50   & 7.9  & 21.1 & 27.0 \\
    50+      & 3.0  & 22.3 & 28.6 \\
    }\mydata

We can now access this in pgfplots commands using \mydata.

A basic plot

We can make a very basic bar chart by using

\begin{tikzpicture}
    \begin{axis}[
            ybar,
            symbolic x coords={0--2,2--5,5--10,10--20,20--50,50+},
            xtick=data,
        ]
        \addplot table[x=interval,y=carT]{\mydata};
    \end{axis}
\end{tikzpicture}

which gives

first attempt

Notice that we had to tell it to use the symbolic x coords so that it knew to use the values from the interval column on the horizontal axis.

Adding more bars

We can easily add the other bars by using more addplot commands

\begin{tikzpicture}
    \begin{axis}[
            ybar,
            symbolic x coords={0--2,2--5,5--10,10--20,20--50,50+},
        ]
        \addplot table[x=interval,y=carT]{\mydata};
        \addplot table[x=interval,y=carD]{\mydata};
        \addplot table[x=interval,y=carR]{\mydata};
    \end{axis}
\end{tikzpicture}

which gives

more bars

Notice that we kept x=interval and changed the y= to suit the appropriate columns.

Adding more details

We can add a few more details such as the numbering near the top of each bar, and a legend by using nodes near coords and \legend respectively

\begin{tikzpicture}
    \begin{axis}[
            ybar,
            symbolic x coords={0--2,2--5,5--10,10--20,20--50,50+},
            xtick=data,
            nodes near coords,
        ]
        \addplot table[x=interval,y=carT]{\mydata};
        \addplot table[x=interval,y=carD]{\mydata};
        \addplot table[x=interval,y=carR]{\mydata};
        \legend{Trips, Distance, Energy}
    \end{axis}
\end{tikzpicture}

This gives

nodes near coords and legend

Final tweaks

It's a little cramped together, so let's specify the width, height, and viewing window; we can also move the legend around and specify a label for the y-axis

\begin{tikzpicture}
    \begin{axis}[
            ybar,
            bar width=.5cm,
            width=\textwidth,
            height=.5\textwidth,
            legend style={at={(0.5,1)},
                anchor=north,legend columns=-1},
            symbolic x coords={0--2,2--5,5--10,10--20,20--50,50+},
            xtick=data,
            nodes near coords,
            nodes near coords align={vertical},
            ymin=0,ymax=35,
            ylabel={\%},
        ]
        \addplot table[x=interval,y=carT]{\mydata};
        \addplot table[x=interval,y=carD]{\mydata};
        \addplot table[x=interval,y=carR]{\mydata};
        \legend{Trips, Distance, Energy}
    \end{axis}
\end{tikzpicture}

Here's the result

final result

There are lot of other keys that you can use to tweak the look and feel of your chart- explore the manual and this site for more information.

Complete MWE

% arara: pdflatex
% !arara: indent: {overwrite: yes}
\documentclass[tikz]{standalone}

\usepackage{pgfplots}

\begin{document}

\pgfplotstableread[row sep=\\,col sep=&]{
    interval & carT & carD & carR \\
    0--2     & 1.2  & 0.1  & 0.2  \\
    2--5     & 12.8 & 3.8  & 4.9  \\
    5--10    & 15.5 & 10.4 & 13.4 \\
    10--20   & 14.0 & 17.3 & 22.2 \\
    20--50   & 7.9  & 21.1 & 27.0 \\
    50+      & 3.0  & 22.3 & 28.6 \\
    }\mydata

\begin{tikzpicture}
    \begin{axis}[
            ybar,
            bar width=.5cm,
            width=\textwidth,
            height=.5\textwidth,
            legend style={at={(0.5,1)},
                anchor=north,legend columns=-1},
            symbolic x coords={0--2,2--5,5--10,10--20,20--50,50+},
            xtick=data,
            nodes near coords,
            nodes near coords align={vertical},
            ymin=0,ymax=35,
            ylabel={\%},
        ]
        \addplot table[x=interval,y=carT]{\mydata};
        \addplot table[x=interval,y=carD]{\mydata};
        \addplot table[x=interval,y=carR]{\mydata};
        \legend{Trips, Distance, Energy}
    \end{axis}
\end{tikzpicture}
\end{document}

[Tex/LaTex] How to make one legend for two pie charts

According pgf-pie documentation you can use pos option to place a pie inside a tikzpicture. You don't need minipage.

And also from examples, seems that a second parameter inside values list (10/A, 20/B) adds names to pie. If you don't want a second legend, write a values list with empty names. If the order is correct, the first legend will serve.

\documentclass[border=10pt]{standalone}
\usepackage{pgf-pie}
\begin{document}
\begin{tikzpicture}
\tikzset{lines/.style={draw=white},}
\pie[color={purple, red, yellow, blue, green},sum=auto, after number=,text=legend,every only number node/.style={text=black},style={lines}]{10/A,20/B,30/C,10/D}
\pie[pos={8,0},color={purple, red, yellow, blue, green},sum=auto, after number=,every only number node/.style={text=black},style={lines}]{10/,20/,30/,10/}
\end{tikzpicture}
\end{document}