cumplyr (version 0.1-1)

cumplyr-package: Extends ddply to allow calculation of cumulative quantities.

Description

Extends ddply to allow calculation of cumulative quantities.

Details

Package:

cumplyr

Type:

Package

Version:

0.1-1

Date:

2012-05-02

License:

MIT

Examples

library('cumplyr')

data(rt.data)

results <- cumddply(rt.data,
                    c('Subject', 'Block'),
                    c('Trial'),
                    function (df) {with(df, mean(RT))})

print(results)