to.wide {MethComp}R Documentation

Functions to convert between long and wide representations of data.

Description

These functions are merely wrappers for reshape. Given the complicated syntax of reshape and the particularly simple structure of this problem, the functions facilitate the conversion enormously.

Usage

  to.wide( data )
  to.long( data, vars )
  

Arguments

data A dataframe
vars The variables representing measurements by different methods. Either a character vector of names, or a numerical vector with the number of the variables in the dataframe.

Details

If data represents method comparisons with exchangeable replicates within method, the transformation to wide format does not necessarily make sense.

Value

A dataframe.

Author(s)

Bendix Carstensen, Steno Diabetes Center, http://www.biostat.ku.dk/~bxc

See Also

tab.repl

Examples

data( milk )
str( milk )
mw <- to.wide( milk )
str( mw )
( mw <- subset( mw, item < 3 ) )
to.long( mw, 3:4 )

[Package MethComp version 0.1.12 Index]