[R] plotting grouped data object

X.H Chen xchen_stat at hotmail.com
Sun Sep 24 00:25:08 CEST 2006

I don't get your meaning in what is in datagrp, anyway, try:


before calling:
plot(data.grp, outer = ~ y)

Xiaohui Chen

Dept. of Statistics
UBC, Canada

>From: "Afshartous, David" <afshart at exchange.sba.miami.edu>
>To: <r-help at stat.math.ethz.ch>
>Subject: [R] plotting grouped data object
>Date: Sat, 23 Sep 2006 18:09:38 -0400
>I'd like to plot the main relationship of a grouped data
>object for all levels of a factor in a single panel.
>The sample code below creates a separate panel for each level
>of the factor.  I realize that this could be done in other ways,
>but I'd like to do it via plotting the grouped data object.
>z = rnorm(18, mean=0, sd=1)
>x = rep(1:6, 3)
>y = factor(rep(c("I", "C", "P"), each = 6))
>dat = data.frame(x, y, z)
>data.grp = groupedData(z ~ x | y, data = dat)
>plot(data.grp, outer = ~ y)
>### this produces 1 line each in 3 panels
>### how to collapse all 3 lines into 1 panel?
>R-help at stat.math.ethz.ch mailing list
>PLEASE do read the posting guide 
>and provide commented, minimal, self-contained, reproducible code.

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