Graphics, Figures & TablesNodes and edges labes

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vejn
Posts: 8
Joined: Wed Jan 30, 2013 12:59 pm

Nodes and edges labes

Post by vejn »

I need labes of edges in tikz example on page. There is only one edge with label

Code: Select all

$x$
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. Could some help me to label others. I need this today.
Thanks
http://www.texample.net/tikz/examples/red-black-tree/

Code: Select all

Code, edit and compile here:
\begin{tikzpicture}[->,>=stealth',level/.style={sibling distance = 5cm/#1,
level distance = 1.5cm}]
\node [arn_n] {33}
child{ node [arn_r] {15}
child{ node [arn_n] {10}
child{ node [arn_r] {5} edge from parent node[above left]
{$x$}} %for a named pointer
child{ node [arn_x] {}}
}
child{ node [arn_n] {20}
child{ node [arn_r] {18}}
child{ node [arn_x] {}}
}
}
child{ node [arn_r] {47}
child{ node [arn_n] {38}
child{ node [arn_r] {36}}
child{ node [arn_r] {39}}
}
child{ node [arn_n] {51}
child{ node [arn_r] {49}}
child{ node [arn_x] {}}
}
}
;
\end{tikzpicture}
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Stefan Kottwitz
Site Admin
Posts: 10345
Joined: Mon Mar 10, 2008 9:44 pm

Nodes and edges labes

Post by Stefan Kottwitz »

It's already a long time ago, but as I don't like to leave a problem unsolved, here's a way: simply add

edge from parent node[above left] {your label}

directly after a child node, such as

Code: Select all

...
child{ node [arn_r] {49} edge from parent node[above left] {$y$}}
...
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tikz-tree.png
tikz-tree.png (17.71 KiB) Viewed 6466 times
If a Infominimal working example would have been posted, I'm pretty sure somebody would have tested it to provide a solution. For example, the styles arn_r, arn_n and arn_x are unknown, I had to follow the link to example.net to get the code from there.

Stefan
LaTeX.org admin
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