How do software teams scale?: A snapshot based on switching SCM tools

Posted by Tom Moertel Fri, 19 Nov 2004 17:00:00 GMT

Recently the Mono team started using Subversion to manage their source code. On a project the size of Mono, such a shift was bound to reveal interesting things about the culture of large software projects. In particular, we might get a glimpse at the answer to the oft-considered question, How much of a project’s source-code management is implemented by their SCM software, and how much is implemented (perhaps invisibly) by the project’s culture?

In a recent email to the Subversion dev list, Ben Collins-Sussman offered a Case study of the Mono-project switch to Subversion. It’s a gem. Reading the email, I couldn’t help but be fascinated by the effects of scale, of old habits, and of project leaders. It seems that for the Mono project, culture is a crucial part of their SCM system. How crucial it is, however, may not have been appreciated until after trying to switch to Subversion. Fascinating stuff.

If you are at all interested in how software-project teams function, especially at a large scale, do read the email.

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2004 Presidential-election state polling data at a glance

Posted by Tom Moertel Tue, 02 Nov 2004 17:00:00 GMT

The Presidential-race polling data on www.electoral-vote.com are great, and the site’s plots do help visualize the country-wide race. But I want to see all the historical data for all of the states at a glance. To this end, I have taken the data from the site (as of the morning of November 2, 2004) and created this all-inclusive summary plot that shows the state-by-state polling results from September 1, 2004 through November 2, 2004:

2004 Presidential-race polling data by state

Some things to observe:

  • Battleground states are polled frequently; others, hardly at all
  • Wisconsin’s polling data suggest that Bush once had the state but lost it

See anything else interesting?

If you want to see the code I used to generate the plot, read on.

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