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Hi i try to use the command fit to make a box around nodes. But the edge nodes should be only half in the box.

\begin{tikzpicture}
    \node at (0,0) (CE1) {\includegraphics[height=3ex]{Bilder/Router.png}}; 
    \node at (2,0) (PE1) {\includegraphics[height=3ex]{Bilder/Router.png}}; 
    \node at (4,0) (P1) {\includegraphics[height=3ex]{Bilder/Router.png}};  
    \node at (6,0) (P2) {\includegraphics[height=3ex]{Bilder/Router.png}};  
    \node at (5,-2) (P3) {\includegraphics[height=3ex]{Bilder/Router.png}}; 
    \node at (8,0) (PE2) {\includegraphics[height=3ex]{Bilder/Router.png}}; 
    \node at (10,0) (CE2) {\includegraphics[height=3ex]{Bilder/Router.png}};    
    \node at (5,-3)(LDP)[scale=0.6, text=black] {directed LDP}; 
    \node (test)[fill=lightgrey , rounded corners, fit= (PE1.mid) (P1) (P2) (P3.south) (PE2.mid)] {};
 \end{tikzpicture}

while using PE1.mid the box dosn´t go exactly through the midle of PE1 it has an offset to the left. is there any way to go exactly through the midle of the node?

thx for help

steffen

  • Welcome to TeX.SX! So that others can test your code, it is best to make it in to a complete minimal working example (MWE) and use a graphic that is available on standard systems such as example-image-a. – Andrew Swann Jul 16 '15 at 8:17
1

I think you're looking for inner {x|y}sep=0pt. Adjust it according your needs. Following code uses inner xsep=0pt and the result is:

enter image description here

\documentclass[tikz,border=2mm]{standalone}

\usetikzlibrary{fit}

\begin{document}

\begin{tikzpicture}
    \node at (0,0) (CE1) {\includegraphics[height=3ex]{example-image-a}}; 
    \node at (2,0) (PE1) {\includegraphics[height=3ex]{example-image-b}}; 
    \node at (4,0) (P1) {\includegraphics[height=3ex]{example-image-c}};  
    \node at (6,0) (P2) {\includegraphics[height=3ex]{example-image-a}};  
    \node at (5,-2) (P3) {\includegraphics[height=3ex]{example-image-b}}; 
    \node at (8,0) (PE2) {\includegraphics[height=3ex]{example-image-c}}; 
    \node at (10,0) (CE2) {\includegraphics[height=3ex]{example-image-a}};    
    \node at (5,-3)(LDP)[scale=0.6, text=black] {directed LDP}; 

    \node (test)[draw, rounded corners, 
         fit= (PE1.mid) (P1) (P2) (P3.south) (PE2.mid), 
         inner xsep=0pt] {};
 \end{tikzpicture}

 \end{document}
  • thx a lot it works perfect – steffen Jul 16 '15 at 8:34

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