rearrange: rearrange a data frame from wide to long format
In erpR: Event-Related Potentials (ERP) Analysis, Graphics and Utility Functions

Description Usage Arguments Details Value Note Author(s) See Also Examples

This utility function of the erpR package converts an ERP data frame with a single variable in wide format to a long format.

1	rearrange(deps, oth = NULL, dataset, name.dep = "Dep", name.newvar = "New_Var")

`deps`	the numbers of the columns in the specified data frame to be rearranged from wide format to long format.
`oth`	other variables that are to be kept in the returned data frame.
`dataset`	the name of the data frame to be converted from wide format to long format.
`name.dep`	the name of the dependent variable in the returned data frame.
`name.newvar`	the name of the variable indicating the levels associated with `name.dep` in the returned data frame.

The function converts a dataframe with a single variable in wide format (levels are in separate columns) in a data frame in long format (the variable is in a single column and the levels are specified by other columns). The original variable in wide format is represented in two columns: one (labeled by name.dep parameter) indicating the values of the dependent variable, and the other that is a factor (labeled by name.newvar parameter) indicating the levels of the variable for each observation. The variables specified in oth are replicated appropriately. This function is called internally by erp.mean, erp.peak, and erp.latency.

A data frame in which the variables specified in the columns deps are converted in a single column name.dep with levels specified in name.newvar

This function is called internally by erp.mean, erp.peak, and erp.latency.

Giorgio Arcara

erp.mean, erp.peak, erp.latency

data(erplistExample)

datwide=erp.mean(base="Exp1_word_subj", numbers=1:20, win.ini=130, 
win.end=190, erplist=erplistExample, startmsec=-200, endmsec=1500, format="wide")

dat.long=rearrange(deps=c(1:32), oth=35:36, dataset=datwide, name.newvar="electrode")