\subsection{Polyline simplification}

\subsubsection{Heuristics}

\paragraph{Positional errors}

\paragraph{Length errors}

\paragraph{Area Errors}

\subsubsection{Algorithms}
Compression algorithms. 

\paragraph{n-th point algorithm}

\paragraph{Random-point routine}

\paragraph{Radial distance algorithm}

\paragraph{Perpendicular distance algorithm}

\paragraph{Reumann-Witkam simplification}

\paragraph{Opheim simplification}

\paragraph{Lang simplification}

\paragraph{Douglas-Peucker simplification}

\paragraph{with reduction parameter}

\paragraph{Jenks simplification}

\paragraph{Visvalingam-Whyatt simplification}

\paragraph{Zhao-Saalfeld simplification}

\subsubsection{Summary}