Cfrgtkky

I use following script (see also here) below, to draw this figure:

documentclass{article}

usepackage{pgfplots}

usepackage{pgfplotstable}

usepackage{tikz}

usetikzlibrary{positioning}

begin{document}

begin{tikzpicture}

  begin{axis}[

    width=14cm,

    height=7cm,

    enlargelimits=false,

    axis x line=bottom,

    axis y line=right,

    axis line style={-},

    tickwidth=2pt,

    domain=-3:3,

    xtick={-3,-2,-1,0,1},

    xticklabels={

      Innovators 2.5%,

      Early Adopters 13.5%,

      Early Majority 34%,

      Late Majority 34%,

      Laggards 16%,

    },

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

    ylabel={Market share %},

    ytick={0,25,50,75,100},

    ymin=0, ymax=110,

    samples=51, smooth, no markers,

    ]



    addplot+[blue,very thick] {50*exp(-.5*x^2)};



    addplot+[red,very thick] {100 / (1 + exp(-2*x))};



    pgfplotsinvokeforeach{-3,...,1} {

      draw[help lines] (axis cs:#1,{50*exp(-.5*(#1)^2)}) -- (axis cs:#1,0);

    }



  end{axis}

end{tikzpicture}

end{document}

I tried to put a line-break to the x-axis descriptions:

xticklabels={

      Innovators \ 2.5%,

      Early Adopters \ 13.5%,

      Early Majority \ 34%,

      Late Majority \ 34%,

      Laggards \ 16%,

    },

However, this didn't change the plot. Secondly, I also like to add a semi-transparent box with a description behind the graph.

Questions:

1. How can I add a line break, so that the percentage numbers are in a
   new line?


2. How can I add a description box, as described?

Thanks for your help!

Define text width for the xtick label to solve the first problem.

x tick label style={rotate=45,anchor=east,text width=3cm,align=right},

The fill command along with a node to put text can solve the second issue. something like this:

fill[gray,opacity=0.5] (axis cs:0,0) rectangle (axis cs:1,100);

node[above] at (axis cs:0.5,100){some text};

The complete code:

documentclass[border=3mm]{standalone}

usepackage{pgfplots}

usepackage{pgfplotstable}

usepackage{tikz}

usetikzlibrary{positioning}

usepgfplotslibrary{fillbetween}

begin{document}

begin{tikzpicture}

  begin{axis}[

    width=14cm,

    height=7cm,

    enlargelimits=false,

    axis x line=bottom,

    axis y line=right,

    axis line style={-},

    tickwidth=2pt,

    domain=-3:3,

    xtick={-3,-2,-1,0,1},

    xticklabels={

      Innovators\2.5%,

      Early Adopters\ 13.5%,

      Early Majority\ 34%,

      Late Majority\ 34%,

      Laggards\ 16%,

    },

    x tick label style={rotate=45,anchor=east,text width=3cm,align=right},

    ylabel={Market share %},

    ytick={0,25,50,75,100},

    ymin=0, ymax=110,

    samples=51, smooth, no markers,

    ]



    addplot+[blue,very thick] {50*exp(-.5*x^2)};



    addplot+[red,very thick] {100 / (1 + exp(-2*x))};

    fill[gray,opacity=0.5] (axis cs:0,0) rectangle (axis cs:1,100);

     node[above] at (axis cs:0.5,100){some text};

    pgfplotsinvokeforeach{-3,...,1} {

      draw[help lines] (axis cs:#1,{50*exp(-.5*(#1)^2)}) -- (axis cs:#1,0);

    }





  end{axis}

end{tikzpicture}

end{document}

EDIT

Another way to solve first issue is to set minimum size. Since OP wants the text to be aligned in center, align=center is used.

x tick label style={rotate=45,anchor= north east,minimum size = 1cm,align=center},

The output corresponding to this line: