Small Example Response and Response Time Data from PISA 2018
Scored responses and responses times from the Canadian subsample of the PISA 2018 assessment, accessible as the "Cognitive Item Data File" by OECD (2019) <https://www.oecd.org/pisa/data/2018database/>.

Scored responses and responses times from the Canadian subsample of the PISA 2018 assessment, accessible as the "Cognitive items total time/visits data file" by OECD (2020) <https://www.oecd.org/pisa/data/2018database/>.

Tools for Collecting and Visualizing Major League Baseball
PITCHf/x Data
R (>= 2.15.1), MASS, XML, ggplot2 (>= 0.9.3), plyr, reshape,
lubridate, stringr, hexbin
'urlsToDataFrame.R' 'animateFX.R' 'getSnapshots.R' 'fields.R'
'urls.R' 'players.R' 'help.R' 'getStrikezones.R' 'strikeFX.R'
'getFacets.R' 'scrapeFX.R' 'pitches.R'

R (>= 2.15.1), MASS, XML, ggplot2 (>= 0.9.3), plyr, reshape,
lubridate, stringr, hexbin, rgl
'animateFX.R' 'strikeFX.R' 'interactiveFX.R' 'getSnapshots.R'
'getStrikezones.R' 'getFacets.R' 'scrapeFX.R'
'urlsToDataFrame.R' 'pitches.R' 'fields.R' 'urls.R' 'players.R'
'help.R'

Tools for Collecting and Visualizing Major League Baseball
PITCHfx Data
R (>= 2.15.1), MASS, XML, ggplot2 (>= 0.9.3), plyr, reshape,
lubridate, stringr, hexbin, mgcv, rgl

MASS, rgl, mgcv, hexbin, lubridate, stringr, plyr, reshape

MASS, rgl, mgcv, hexbin, lubridate, stringr, plyr

Tools for Harnessing MLBAM Gameday data and Visualizing PITCHf/x
With pitchRx, one can easily obtain Major League Baseball Advanced
Media's Gameday data (as well as store it in a remote database). The
Gameday website hosts a wealth of data in XML format, but perhaps most
interesting is PITCHf/x. Among other things, PITCHf/x data can be used to
recreate a baseball's flight path from a pitcher's hand to home plate. With
pitchRx, one can easily create animations and interactive 3D scatterplots
of the baseball's flight path. PITCHf/x data is also commonly used to
generate a static plot of baseball locations at the moment they cross home
plate. These plots, sometimes called strike-zone plots, can also refer to a
plot of event probabilities over the same region. pitchRx provides an easy
and robust way to generate strike-zone plots using the ggplot2 package.
XML2R (>= 0.0.4), plyr, MASS, hexbin, rgl, mgcv, lubridate
DBI, dplyr, RSQLite, RSQLite.extfuns, parallel, knitr,
animation, shiny, ggsubplot