butterfly: ERP butterfly plot
In erpR: Event-Related Potentials (ERP) Analysis, Graphics and Utility Functions

Description Usage Arguments Value Author(s) See Also Examples

A butterfly plot of several ERP data frames.

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butterfly(base, numbers,  electrode = NULL, startmsec = NULL, 
endmsec = NULL, erplist = NULL, outline=NULL, out.col="black", 
add = FALSE, ...)

`base`	a string indicating the beginning of the name of the data frame containing ERP data.
`numbers`	the numbers of the subjects to be averaged by the function.
`electrode`	the electrode to be plotted.
`startmsec`	the start time (in ms) of the ERP data frames. It can be a negative value, indicating the baseline time frame.
`endmsec`	the end time (in ms) of the ERP data frames.
`erplist`	a list containing the ERP data frames specified in `base` and `numbers`.
`outline`	the number of the subject to be outlined (it will be plotted with lwd=2).
`out.col`	the color of the outlined ERP waveform.
`add`	add the current plot to a previous plot
`...`	further parameters to be passed to `link{erp}`.

A butterfly plot.

Giorgio Arcara

erp, erp.infl, scalp.infl

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data(erplistExample)
butterfly(base="Exp1_nonword_subj", numbers=1:20, electrode="Fp1", smo=0, 
erplist=erplistExample, outline=1, ylim=c(-20,20), out.col="red")