Document Classes ⇒ tikz + foreach question

[XHelp]

Hello!
First at all: sory my bad english

i use latex beamer to make a presentation.
i draw with tikz and foreach one graph:

Code: Select all

\foreach \pos/\name in {{(0,2)/S2}, {(0,4)/S1}, {(4,3)/A}}
\node (\name) at \pos [] {$\name$};

\foreach \source/ \dest /\weight in {S1/A/5, S2/A/8}
\draw[->] (\source) to node[] {\weight} (\dest);

Now i need to change, also with foreach, the weight (and color) of the edges.
finaly i will to get similary result as the attached pdf, but for each path from s to t.
Can anybody help me with it?
Thanks!

[propell]

I don't have any clear answers to your question. The example in the following link is related and may give you some hints on how to solve your problem:

http://www.texample.net/tikz/examples/prims-algorithm/



- Kjell Magne Fauske