How to specify a Tikz coordinate relative to a node?

is there a simple idiom (one not using the calc library) to specify a Tikz coordinate relative to a node?

Something like \coordinate (x) [right=of A]; instead of \node (x) [draw=none, right=of A]{};?

Thanks

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Where do you want the coordinate to end up? Nodes come equipped with a whole slew of anchors, would one of them do? (A.east) seems a reasonable one in this case. –  Loop Space May 24 '12 at 19:06
\coordinate[right=of A] (x) ; is fine but not \coordinate (x) [right=of A]; –  Alain Matthes May 24 '12 at 19:10
@AndrewStacey The advantage of doing [right=of A] instead of (A.east), as you suggest, is that I can change the node distance and have the coordinate repositioned, or I can say directly things like [right=30mm of A]. Also a coordinate has no space, that's why I had to put [draw=none ... above. –  Mário May 24 '12 at 21:48

\documentclass{article}
\usepackage {tikz}
\usetikzlibrary{positioning}

\begin{document}

\begin{tikzpicture}
\node (A){A};
\coordinate  (x) [right=of A];
\coordinate[right=of A]  (y) ;
\draw (x) -- ++(1,1);
\draw[red] (y) -- ++(1,1);
\end{tikzpicture}

\end{document}


remark the problem is similar with

  \node  (x) {} [right= of A];
instead of   \node[right= of A]  (x) {} ;
but \node (x) [right= of A]  {} ; is valable

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Your solution worked! Thank you –  Mário May 24 '12 at 21:44