Single stacked bar, values and legend

Question

\documentclass{article}
\usepackage{pgfplots}
\begin{document}
\pgfplotsset{testbar/.style={
title=strookdiagram sporten,
xbar stacked,
width=10cm,
axis y line*= none, axis x line*= bottom,
xmajorgrids = true,
xmin=0,xmax=100,
ytick = data,
yticklabels = {},
tick align = outside, xtick pos = left,
bar width=6mm, y=8mm,
enlarge y limits={abs=0.625},% 0.5 + 0.5*(y - bar width)/y [TeX.sx #47995]
nodes near coords,
nodes near coords align={left},
}}
\begin{tikzpicture}
\begin{axis}[testbar] 
    \addplot[fill=red!40] coordinates{(20,0) };
    \addplot[fill=gray!40] coordinates{(10,0)};
    \addplot[fill=green!40] coordinates{(20,0) };
    \addplot[fill=orange!40] coordinates{(40,0) };
    \addplot[fill=blue!40] coordinates{(3,0) };
    \addplot[fill=red!40] coordinates{(7,0) };
\end{axis}
\end{tikzpicture}
\end{document}

I wanted to make a stacked bar graph, horizontal, with a legend and the percentage of each piece. The code above gives me:

But as you can see, the percentages are all zero. I also want a legend. Thanks in advance.

EDIT

I changed the code with the help of Jesse, so I now my code is:

 \documentclass{article}
 \usepackage{pgfplots}
 \usetikzlibrary{positioning}
 \begin{document}
 \pgfplotsset{testbar/.style={
 title=strookdiagram sporten,
 title style={yshift=10pt},
 xbar stacked, area style,
width=10cm,
axis y line*= none, axis x line*= bottom,
xmajorgrids = true,
xmin=0,
xmax=100,
x=1mm,
xtick={0,10,...,100},
ytick = data,
yticklabels = {},
tick align = outside, xtick pos = left,
bar width=6mm, y=8mm,
enlarge y limits={abs=0.625},% 0.5 + 0.5*(y - bar width)/y [TeX.sx #47995]
%nodes near coords,
nodes near coords={\pgfmathprintnumber\pgfplotspointmeta\%}
every node near coord/.append style={rotate=-90,font=\small, left,shift={(axis direction cs:-3,0)}}
}}
\begin{tikzpicture}
\begin{axis}[testbar,legend style={area legend, at={(0.5,-0.85)}, anchor=north, legend columns=-1}] 
\addplot[fill=red!40] coordinates{(20,0) };
\addplot[fill=gray!40] coordinates{(10,0)};
\addplot[fill=green!40] coordinates{(20,0) };
\addplot[fill=orange!40] coordinates{(40,0)};
\addplot[fill=blue!40] coordinates{(3,0) };
\addplot[fill=red!40] coordinates{(7,0) };
\legend{Voetbal,Netbal,C,D,E,F}
\end{axis}
\end{tikzpicture}
\end{document}

But the image it gives me is now

I've updated all packages with TeX Live Utilty and my TeX editor is TeXpad.

Answer 1

This attempt tries to provide two solutions. Since stacking means to add either x- or y- coordinates of successive \addplot commands on top of each others (Here, it is the x direction), causing the overlap for the 90% and 3% in particular.

The first solution on the top is to rotate the label by -90 degree and use the small font size. To do that is to define an append style via every node near coord/.append style command. It is noted that the shift command shift={(axis direction cs:-3,0)} is to move the labels up so that they won't collide with the boxes for better readability.

The second plot at the bottom simply changes the y coordinates from the same y=0 to y=0,1,2,3,4,5, thus making them like a stair, without changing the default label orientations. Furthermore, in this plot, you will observe why the labels overlay if they collapse to a single, horizontal stacked bar.

As to the legend, a legend style is defined via legend style={area legend, at={(0.5,-0.15)}, anchor=north, legend columns=-1}.

\documentclass{article}
\usepackage{pgfplots}
\usetikzlibrary{positioning}
\begin{document}
\pgfplotsset{testbar/.style={
title=strookdiagram sporten,
xbar stacked, area style,
width=10cm,
axis y line*= none, axis x line*= bottom,
xmajorgrids = true,
xmin=0,xmax=100,
ytick = data,
yticklabels = {},
tick align = outside, xtick pos = left,
bar width=6mm, y=8mm,
enlarge y limits={abs=0.625},% 0.5 + 0.5*(y - bar width)/y [TeX.sx #47995]
nodes near coords,
every node near coord/.append style={rotate=-90,font=\small, left,shift={(axis direction cs:-3,0)}}
}}
\begin{tikzpicture}
\begin{axis}[testbar,legend style={area legend, at={(0.5,-0.85)}, anchor=north, legend columns=-1}] 
    \addplot[fill=red!40] coordinates{(20,0) };
    \addplot[fill=gray!40] coordinates{(10,0)};
    \addplot[fill=green!40] coordinates{(20,0) };
    \addplot[fill=orange!40] coordinates{(40,0)};
    \addplot[fill=blue!40] coordinates{(3,0) };
    \addplot[fill=red!40] coordinates{(7,0) };
   \legend{A,B,C,D,E,F}
\end{axis}
\end{tikzpicture}

\vspace{1cm}

\pgfplotsset{testbar/.style={
title=strookdiagram sporten,
xbar stacked, area style,
width=10cm,
axis y line*= none, axis x line*= bottom,
xmajorgrids = true,
xmin=0,xmax=100,
ytick = data,
yticklabels = {},
tick align = outside, xtick pos = left,
bar width=6mm, y=8mm,
enlarge y limits={abs=0.625},% 0.5 + 0.5*(y - bar width)/y [TeX.sx #47995]
nodes near coords,
nodes near coords align={left}
}}
\begin{tikzpicture}
\begin{axis}[testbar,legend style={area legend, at={(0.5,-0.15)}, anchor=north, legend columns=-1}] 
    \addplot[fill=red!40] coordinates{(20,0)};
    \addplot[fill=gray!40] coordinates{(10,1)};
    \addplot[fill=green!40] coordinates{(20,2) };
    \addplot[fill=orange!40] coordinates{(40,3) };
    \addplot[fill=blue!40] coordinates{(3,4) };
    \addplot[fill=red!40] coordinates{(7,5) };
   \legend{A,B,C,D,E,F}
\end{axis}
\end{tikzpicture}
\end{document}

Edit:

1. The OP prefers to use percentages instead of numbers. Then replace the corresponding lines to nodes near coords={\pgfmathprintnumber\pgfplotspointmeta\%}.

2. To move the title further up, add title style={yshift=10pt} to the axis of the first plot because the added % will collide with the title in the old setting.

3. To remove the grid on top, add axis on top=false to the testbar/.style

With those changes made, a new output is shown below.