Cfrgtkky

I have a problem with stacked bar in PGFplot. I would like to show the partial number of each segment, like this:

But instead of that, when I copy my code in TeXShop and compile it, I got the value of each segmen added up:

I used exactly the same code, as it is shown in the following URL:

http://pgfplots.net/tikz/examples/stacked-bar-plot/

Do you know what I need to change in order to have the desired representation?

Thanks a lot.

The documentation of pgfplots contains this (with special emphasis on the last paragraph):

So, as the comment in the beginning of the example code suggests, you have to change the compatibility set of pgfplots to 1.9, at least:

documentclass[border=10pt]{standalone}

usepackage{pgfplots}

% pgfplotsset{width=7cm,compat=1.8}

pgfplotsset{width=7cm,compat=1.9}% Changed here, only

begin{document}

begin{tikzpicture}

begin{axis}[

    ybar stacked,

  bar width=15pt,

  nodes near coords,

    enlargelimits=0.15,

    legend style={at={(0.5,-0.20)},

      anchor=north,legend columns=-1},

    ylabel={#participants},

    symbolic x coords={tool1, tool2, tool3, tool4, 

    tool5, tool6, tool7},

    xtick=data,

    x tick label style={rotate=45,anchor=east},

    ]

addplot+[ybar] plot coordinates {(tool1,0) (tool2,2) 

  (tool3,2) (tool4,3) (tool5,0) (tool6,2) (tool7,0)};

addplot+[ybar] plot coordinates {(tool1,0) (tool2,0) 

  (tool3,0) (tool4,3) (tool5,1) (tool6,1) (tool7,0)};

addplot+[ybar] plot coordinates {(tool1,6) (tool2,6)

  (tool3,8) (tool4,2) (tool5,6) (tool6,5) (tool7,6)};

addplot+[ybar] plot coordinates {(tool1,4) (tool2,2) 

  (tool3,0) (tool4,2) (tool5,3) (tool6,2) (tool7,4)};

legend{strut never, strut rarely, strut sometimes, strut often}

end{axis}

end{tikzpicture}

end{document}

and voilà: