ez.reshape: Reshape data frame from large to long format

In NicolasStefaniak/easieR: easieR: A GUI R metapackage.

Reshape data frame from large to long format

Description

Wrapper function for reshaping data frame from large to long format

Usage

ez.reshape(data=NULL, varying = NULL, v.names = NULL, idvar = "id", IV.names=NULL, IV.levels=NULL )

Arguments

data	a data frame
varying	names of sets of variables in the wide format that correspond to single variables in long format (‘time-varying’).
v.names	names of variables in the long format that correspond to multiple variables in the wide format.
idvar	Names of one or more variables in long format that identify multiple records from the same group/individual.
IV.names	list with the name of the independant variables names created in the long format
IV.levels	list with the levels of the independant variables created in the long format

Details

This function is mainly based on the reshape function from base. It allows to return a data.frame in a long format. It is not neccessary to state the name of the data frame given that the data.frame in the long format is automatically assigned to the .GlobalEnv with the name of the dataframe which is extended with ".long".

Author(s)

Nicolas Stefaniak

Examples

df<-data.frame(student=c(rep(1,5),rep(2,5)), month=c(1:5,1:5),  
                               quiz1p1=seq(20,20.9,0.1),quiz1p2=seq(30,30.9,0.1),  
                              quiz2p1=seq(80,80.9,0.1),quiz2p2=seq(90,90.9,0.1))
df
ez.reshape() # GUI
# or in command line
ez.reshape(data=df, varying =list(c('quiz1p1','quiz1p2','quiz2p1','quiz2p2')), 
v.names =c('Score'),idvar =c('student','month'),IV.names=list('Quizz','Part'), 
IV.levels=list( c('Quizz1','Quizz2'), c('Part1','Part2')))
 

NicolasStefaniak/easieR documentation built on Jan. 31, 2025, 2:59 p.m.