Pi Spiral

[marce...@gmail.com]

So I found this:
http://mkweb.bcgsc.ca/pi/art/

And I immediately was captivated by it. I set out to figure out how to create the last idea in the set, which represents each digits 0-9 with a unique colour and displays pi in a spiral:

Can anybody prod me in the right direction with this? It just looks like so much fun.

[Martin Krzywinski]

Here's the Circos configuration that generates the images.

First, you parse the number with a script that assigns the radial/angular position to each digit

> cat pi.1e6.txt | ./makescatter > scatter.txt

The makescatter.conf script controls the stepping along the spiral, colors and size of each glyph.

Then run circos

> circos

to create the image. Here I'm assuming circos is in your PATH. It will detect the circos.conf file and read all the files.

Essentially the spiral is a scatter plot with each digit represented by a point, whose x-value (angular position) and y-value (radial position) has been computed by makescatter.

Martin Krzywinski

science + art

http://mkweb.bcgsc.ca

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