Drawing a signal-flow diagram as in SICP

Question

I'm looking for the way to draw such a diagram as http://mitpress.mit.edu/sicp/full-text/book/ch3-Z-G-35.gif, http://mitpress.mit.edu/sicp/full-text/book/ch3-Z-G-49.gif, http://mitpress.mit.edu/sicp/full-text/book/ch3-Z-G-51.gif, named after signal-flow diagram in SICP. I've tried some methods, but failed. I'm waiting for your help.

I've tried graphviz and written the following code. I want to get a diagram for the stream of Fibonacci sequence.

digraph G {
    add [shape = box];
    cons_1 [shape = box, label = "cons"];
    cons_2 [shape = box, label = "cons"];
    fibs [shape = point];
    Efibs [shape = point];
    single_0 [shape = none, label = "0"];
    single_1 [shape = none, label = "1"];
    subgraph cluster_0 {
        add -> cons_1 -> Efibs -> cons_2 -> fibs;
    }
    single_0 -> cons_1 [style = dotted];
    single_1 -> cons_2 [style = dotted];
    Efibs -> add;
    fibs -> add;
}

But the result is awkward. Is there any simple tool (I prefer WYTIWYG) or tutorial to draw this kind of diagram?

Thanks a lot.

score 0 · Accepted Answer · answered Jul 26 '12 at 20:08

0

If you are comfortable with LaTeX the TiKz package can produce nice diagrams. Although if you haven't used it before it probably isn't worth learning just for this.

answered Jul 26 '12 at 20:08

dshepherd

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Thanks. Some days before, I learnt TiKz and pictured some flow charts. Now I'm starting to read TAOCP. – Yai0Phah Jul 27 '12 at 03:46

Drawing a signal-flow diagram as in SICP

1 Answers1