LaTeX-examples/tikz/center/center.tex

\documentclass{article}
\usepackage[pdftex,active,tightpage]{preview}
\setlength\PreviewBorder{2mm}
\usepackage{tikz}
\usepackage{tkz-fct}
\usetikzlibrary{shapes.misc}
\usetikzlibrary{shapes, calc, decorations} 
\usepackage{amsmath,amssymb}

\begin{document}
\begin{preview}
\begin{tikzpicture}[dot/.style={    thick,
    draw=gray,
    cross out,
    inner sep=0pt,
    minimum width=4pt,
    minimum height=4pt}]
\draw[->] (3.20,0.13) -- (3.01,0.86);
\draw[->] (1.38,1.12) -- (2.65,1.06);
\draw[->] (3.68,3.38) -- (3.11,1.51);
\draw[->] (4.46,0.43) -- (3.26,0.92);
\draw[->] (2.11,0.15) -- (2.79,0.86);
\node[circle,inner sep=1pt,fill]  at (2.97,1.04) {};
\foreach \point in {(2.11,0.15),(4.46,0.43),(3.68,3.38),(1.38,1.12),(3.20,0.13)}{
\node[dot] at \point {};
}
\end{tikzpicture}
\end{preview}
\end{document}