# tikz left of = node.center

Following Problem with tikz: I want to Position my nodes as seen in the attached Picture. So "east" of my node "a" is my "west" of node "b"; (in short: a.east=b.west). in Addition i would love to add a optional space sometimes between a; (a.east=b.west+x).

Additionally i want for other nodes that some nodes to have the same x0,y0-Position.

In the MWE i provided i want the bigger Ellipse's east to match at the rectanlges west. And the smaller Ellipse should have the same x0,y0 as the bigger one.

\documentclass{scrartcl}
\usepackage{tikz}
\usetikzlibrary{shapes, positioning}
\begin{document}
\begin{figure}
\centering
\begin{tikzpicture}
\node (outer) [rectangle, draw=black, thick, minimum height=4cm,minimum width=3cm]{};
\node (inin)[ellipse, draw=black, thick, minimum height=2cm, minimum width=0.3cm, right of = outer] {};
\node (inout)[ellipse, draw=black, thick, minimum height=2.5cm, minimum width=0.5cm, right of =outer] {};
\end{tikzpicture}
\caption{Arch}
\label{fig:Arch}
\end{figure}
\end{document}


Any suggestions?

Edit: i added a second Picture, to make clearer what i want.

• Note that code should be formatted as code (indent by four spaces or highlight and hit the {} key) rather than as a quotation. Some line breaks would be good. Perhaps you could edit your question to include them? – cfr Dec 29 '14 at 19:13

To place a node x distance to the right of node a, use:

right=x of a


x might, for example, be 0pt or 5mm or whatever.

To place the inner line of the ellipse, it is easiest to draw the outer line first and then place the inner line using inout.center to centre the ellipse. This seems simpler, to me, than figuring out the appropriate amount to move to the right.

\documentclass[tikz, border=5pt]{standalone}
\usetikzlibrary{shapes, positioning}
\begin{document}
\begin{tikzpicture}
\node (outer) [rectangle, draw=black, thick, minimum height=4cm,minimum width=3cm]{};
\node (inout)[ellipse, draw=black, thick, minimum height=2.5cm, minimum width=0.5cm, right=0pt of outer] {};
\node (inin)[ellipse, draw=black, thick, minimum height=2cm, minimum width=0.3cm] at (inout.center) {};
\end{tikzpicture}
\end{document}