Graphics, Figures & Tables ⇒ TikZ determine coordinate of a node

[woltan]

Heyas,
I have the following problem:
I have a series of nodes within a foreach statement. They are being drawn on a vertical line, but all have different widths.
How do I determine the node that reaches the furthest out to the left?

I know that there is the "let" path operation, with which I can get the x-coordinate of every node but I can only draw stuff and not memorize the x-coordinates to compare them after the foreach to find the lowest x.

Is there any other way to determine the x-coordinate of a node?

Thx for any hint, suggestion etc!
cherio Woltan

[fenn]

This may not be helpful to you, but if you are looking to define a shape that encompasses all nodes, you can use the fit parameter when defining a node.

Code: Select all

\documentclass{article}

\usepackage{tikz}
\usetikzlibrary{fit}

\begin{document}

\begin{tikzpicture}

	\node (polarizer) at (0,1) [draw,rectangle,minimum width=1cm]{};
	\node (quarter wave) at (0,2) [draw,rectangle,minimum width=3cm]{};
	\node (box) [draw,rectangle,dotted, inner sep=2mm,fit = (polarizer) (quarter wave)]{};

\end{tikzpicture}

\end{document}

In this example, the (box) node will be drawn such that all specified nodes fit within it.

[localghost]

The same applies to solutions as well as to requests. Complete examples are most helpful.


Best regards
Thorsten

[fenn]

Fair enough. I've updated my post with a properly working example.