\begin{tikzpicture}[auto,scale=0.7,transform shape]
% x node set with absolute coordinates
\node (c) at (0,0) [label=left:$r$,point];
%\node (c1) at (-2,-2) [label=left:$c_1$,point];
%\node (c2) at (2,-2) [label=right:$c_2$,point];
\node (i) at (0,1) [label=left:$h(f_X)$,point];
\coordinate [label=below:$f_X \in \bset{\FF_{r}}$] (ec) at (0,-1);
% Directed edge
\path (i) edge node[right] {$\bcancel{X}$} (c);
\draw[dotted] (c) -- (ec);
% Bidirected edge
%\path[bidirected] (A) edge[bend left=60] (C);
%\node at ($(1)!.5!(2)$) {\ldots};
\end{tikzpicture}