2017 Highlights

Just to avoid the embarrassment of going a calendar year without a blog post, here is a summary of some of my 2017 highlights. It’s not that I’ve been silent, but I’ve mostly switched to microblogging on Twitter (@xangregg) for sharing updates.

Tie-dye marathon

Some summers I keep track of a tie-dye “marathon” where I see how many days in a row I can go wearing a different tie-dye each day. This year I made it 32 days. Most of the images are on Twitter. Here are days 13 – 24.

Google Code Jam 2017

I tried both the code jam and the distributed code jam this year. In the regular code jam I made it to the round of 3000 before bombing out with a tied-for-last score. I keep forgetting the later rounds often require ready-made advanced optimization algorithms. I did better in the distributed code jam, advancing to the round of 500, which was enough to win my third code jam T-shirt. The distributed code jam is tricky since you submit code that is run on a distributed system of 100 CPUs. This year it helped that I built a test harness that used 100 threads for a better simulation of the actually process communication issues.

Packed Bars

Trying to find a decent way to show data with many categories in a skewed distribution, I created a new chart type called packed bars. Here’s an example showing costs of billion-dollar disasters before this year.

I presented packed bars in a poster at the IEEE VIS conference in Phoenix, and there are now implementations in JMP, R, Excel and D3.js. Ironically, the JMP script is the weakest implementation pending the arrival of JMP 14 in March 2018. It’s only great such data and has some learning curve, but skewed data is pretty common, especially in quality control (defect counts) and finance. I hope packed bars can become useful to others.

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