PITCHf/x data on nine-time All-Star Miguel Cabrera, who is thought to be one of the best pure hitters in baseball. Covers seasons 2009 through 2012.

A data frame with 6265 observations on the following 12 variables. Each observation is a pitch to Cabrera.

- season
The year of play

- gamedate
Date of the game in which the pitch was thrown

- pitch_type
Type of pitch thrown, as determined by a computer algorithm.

- balls
Current ball count

- strikes
Current strike count

- speed
speed of pitch (in mph). (When crossing plate?)

- px
x-coordinate of pitch (in feet, measured from center of plate)

- pz
vertical coordinate of pitch (in feet above plate)

- swung
Whether or not Cabrera swung at the ball. Factor with levels "no", "yes".

- hitx
x-coordinate of landing point of ball (if it was hit). Relative to park.

- hity
y-coordinate of landing point of ball (if it was hit). Relative to park.

- hit_outcome
Outcome when ball was hit. Factor with levels E (error), H (hit), O (batter out).

Marchi and Albert: analyzing Baseball Data with R, CRC Press 2014. For more on the PITCHf/x system, see http://en.wikipedia.org/wiki/PITCHf/x.

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