Posts Tagged ‘ baseball ’

MLB Baseball Pitching Matchups ~ grabbing pitcher and/or batter codes by specify game date using R XML

June 1, 2010
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MLB Baseball Pitching Matchups ~ grabbing pitcher and/or batter codes by specify game date using R XML

MLB Gameday stores its game data in XML format, with the players denoted in ID numbers. To find out who is who, the codes are stored in pitchers.xml or batters.xml of each game. My DownloadPitchFX.R script can download the ID numbers, but it doesn’t look to see who the ID is because of the extra

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MLB Baseball Pitching Matchups ~ manipulating pitch f/x data using the RMySQL package in R

May 31, 2010
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MLB Baseball Pitching Matchups ~ manipulating pitch f/x data using the RMySQL package in R

After downloading some pitch f/x data using my R script, we can finally have some fun. But because the pitch f/x data is very elaborate, R can easily get overwhelmed by copying the dataset back and forth in memory, as you manipulate the data. So the natural progression is to use relational database systems. Here,

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Testing Out my Pitch F/X Data

May 25, 2010
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Testing Out my Pitch F/X Data

I recently got all the Pitch F/X data downloaded from Gameday, and have been fiddling around. I certainly don't have the physics knowledge to really talk about the movement at this point, and I'm still acquainting myself with the data format and what e...

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MLB Baseball Pitching Matchups ~ downloading pitch f/x data using the XML package in R [updatedx6]

May 18, 2010
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MLB Baseball Pitching Matchups ~ downloading pitch f/x data using the XML package in R [updatedx6]

Update x6 (Jul 27): so I guess people want pitch counts. The data @ MLB seems to only give the pitch count of the end result and the strikes/balls/outs of the particular pitch. Of course you can combine them to get the pitch count. Stupid WordPress comments strip out necessary HTML to properly display code,

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Fun with R: Clustering and MDS

May 5, 2010
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Fun with R: Clustering and MDS

I've seen K-means clustering, PCA, etc. done some over at Beyond the Boxscore and Baseball Analysts (and the now defunct Statspeak), but I thought I'd just check out some clustering on the young fantasy season using the traditional 5x5 categories with ...

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You won, but how much was luck and how much was skill?

May 4, 2010
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You won, but how much was luck and how much was skill?

In baseball, what are the chances the winner will win again against the same opponent the very next day?

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Using R to Analyze Baseball Games in “Real Time”

October 4, 2009
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Using R to Analyze Baseball Games in “Real Time”

In order to honor the last day of the 2009 MLB regular season (excepting the Twins/Tigers tiebreaker Tuesday night), I was reading a book that combines a few of my favorite thing: statistics, R, and baseball. The book, by Joseph Adler, is called Baseball Hacks, and I highly recommend it if you are interested in

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