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Are there some publicly available, vector format diagrams of trees and other graphs? They aren't hard to make, but they sure do take a lot of time (for me).

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closed as off topic by Scott Morrison Nov 12 '09 at 19:49

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What do you want them for? If you just want some examples of graphs for personal use, Mathworld and Wikipedia pages have a number of them. – Harrison Brown Nov 12 '09 at 19:00
Closed, not about mathematics. – Scott Morrison Nov 12 '09 at 19:49
Still don't understand why this was closed. There are plenty of popular questions about typesetting and making diagrams. These seem relevant to mathematical writing. E.g.… – I. J. Kennedy Sep 28 '10 at 16:33

use the LaTeX package TikZ. Here are some examples.

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Graphviz has several examples.

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Wikipedia and Wikimedia Commons.

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