Test.tex

%\documentclass[12pt,a4paper]{article}
%\usepackage{standalone}
%\usepackage[T1]{fontenc}                       
%\usepackage[utf8]{inputenc}                    
%\usepackage{ngerman}
%\usepackage{pifont,mathptmx,charter,courier}   
%\usepackage[scaled]{helvet} 
%\usepackage{tikz}							   % fuer schoene Zeichnungen
%\usetikzlibrary{intersections, calc, arrows, shapes, shapes.symbols, positioning, shadows, shadows.blur, trees, decorations.markings, patterns, pgfplots.groupplots, fadings}
%\usepackage{smartdiagram}
%\usepackage{pgfplots}
%\usepgfplotslibrary{colormaps}
%\pgfplotsset{compat=1.6, /pgf/number format/use comma, /pgf/number format/1000 sep={}, y tick label style={/pgf/number format/use comma, /pgf/number format/1000 sep={}}, x tick label style={/pgf/number format/use comma, /pgf/number format/1000 sep={}}}
%
%\pgfkeys{/pgfplots/linelabel/.style args={#1:#2:#3}{name path global=labelpath,execute at end plot={
%\path [name path global = labelpositionline](rel axis cs:#1,0) -- (rel axis cs:#1,1);
%\draw [text=black,inner sep=1pt,name intersections={of=labelpath and labelpositionline}] (intersection-1) -- +(#2) node [label={#3}] {};},}}
%
%\begin{document}
%\begin{tikzpicture}
%    \begin{axis}[xmin=-6, xmax=6,  axis x line=bottom, ymax=1.2, axis y line=left, xlabel={Zeit}, ylabel={Anzahl der Personen}, xtick = \empty, ytick = \empty]
%        \addplot[blue, mark=none, thick, samples=100, domain=-6:6, linelabel=0.35:{-.5cm,1.6cm}:Tipping Point] (x,{1/(1+exp(-x))}) node [fill=red!100, draw=none, rounded corners, pos=0.35] {};
%    \end{axis}
%\end{tikzpicture}
%\end{document}



\documentclass[12pt,a4paper]{article}
\usepackage{standalone}
\usepackage[T1]{fontenc}                       
\usepackage[utf8]{inputenc}                    
\usepackage{ngerman}
\usepackage{pifont,mathptmx,charter,courier}   
\usepackage[scaled]{helvet} 
\usepackage{tikz}							   % fuer schoene Zeichnungen
\usetikzlibrary{intersections, calc, arrows, shapes, shapes.symbols, positioning, shadows, shadows.blur, trees, decorations.markings, patterns, pgfplots.groupplots, fadings}
\usepackage{smartdiagram}
\usepackage{pgfplots}
\usepgfplotslibrary{colormaps}
\pgfplotsset{compat=1.6, /pgf/number format/use comma, /pgf/number format/1000 sep={}, y tick label style={/pgf/number format/use comma, /pgf/number format/1000 sep={}}, x tick label style={/pgf/number format/use comma, /pgf/number format/1000 sep={}}}

\tikzset{
    precise pin/.style args={#1:#2}{
        pin={[
            inner sep=0pt,
            label={[
             append after command={
                    node [
                        inner sep=0pt,
                        at=(\tikzlastnode.#1),
                        anchor=#1+180
                    ] {#2}
                }
            ]center:{}}
        ]#1:{}}
    }
}

\begin{document}
\begin{tikzpicture}[pin distance=1.5cm]
    \begin{axis}[xmin=-6, xmax=6,  axis x line=bottom, ymax=1.2, axis y line=left, xlabel={Zeit}, ylabel={Anzahl der Personen}, xtick = \empty, ytick = \empty]
        \addplot[blue, mark=none, thick, samples=100, domain=-6:6] (x,{1/(1+exp(-x))}) node [fill=red!100, draw=none, rounded corners, pos=0.35, precise pin=105:{\color{black}Tipping Point}, outer sep=0pt] {};
    \end{axis}
\end{tikzpicture}
\end{document}