The Lumber Room

"Consign them to dust and damp by way of preserving them"

Drawing for everyone

with 2 comments

Mark Jason Dominus:

If you wanted to hear more about phylogeny, Java programming, or tree algorithms, you are about to be disappointed. The subject of my article today is those fat black lines.

I had no idea that the PBM/PGM/PPM formats were so simple. (Or that I had forgotten so much Perl.)

Now that I know, I feel strangely empowered.

As a direct result of that article, here are some SVG images I made in Python. (Heh.)
[For a reply to my mother about the Missing-square puzzle.]





Written by S

Thu, 2008-04-03 at 07:28:12

2 Responses

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  1. On a related (or perhaps unrelated) note, have you heard of GraphViz? It’s a software created at AT&T that makes constructing flowcharts, implication diagrams etc. really easy: all you do is describe the set of relations in a “declarative programming” fashion, and can specify everything in plain text without ever drawing a line :). I’m using Graphviz for constructing some complicated implication diagrams for my group theory wiki, and will probably find more use for it.

    Vipul Naik

    Mon, 2008-04-07 at 16:01:18

  2. Yeah, I have used GraphViz too. DOT is nice.

    It’s fine for visualising graphs, for getting a good representation of relationships. The problem is once you want even the slightest control of how things look, you realise you’re not using the right tool…
    Graphviz is great, for example, for X is the new Y diagrams :-)

    (This comment was in the spam queue for some reason.)


    Sat, 2008-04-12 at 13:07:36

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