Graph drawing for dummies?

Hello,

i want to draw a graph in a way a human can "read" it.
No mathematical correction or perfectness needed.

I found information about a "spring algorithm", which should do, what
i want. But i couldnt find any information on how exactly it works.
I need some kind of "recipe" or an implementation in any language to
understand how i can programm my version in PHP.

The only information i could find is, that a very expensive book about
this algorithm exists.

Any information, URL or Sourcecode would be appreciated.


Information on the Project:
As a hobby i am programming a software in PHP with MYSQL which shall
visualisate a network. I want to write SVG files which show the graph
of the network.


Thank You.


Yaba



.

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