[R] Suppress legend in plotting groupedData

[Deepayan Sarkar]

On 3/9/06, Marc Bernard <bernarduse1 at yahoo.fr> wrote:
> Dear All,
>
>   I would be grateful if you can tell how can I suppress the legend
> (automatically created) when I plot a groupedData.
>
>   suppose that I have data farme df_0 which contains the following columns:
>  ID represents  the clusters, t  represents time of observation, Y: the
> variable of interest and X a binary covariate. Then:
>
>   df_1 <- groupedData(Y ~ t | ID)
>
>   plot(df_1, outer ~X)
>
>   This gives me the plot (Y ~ t) for each cluster with a legend containing
> all the clusters.
>
>   How can I drop the legend?

key=FALSE. See ?plot.nfnGroupedData or ?plot.nffGroupedData (whichever
is appropriate according to the class(df_1)) for details.

Deepayan