R help - Mar 2006 - Suppress legend in plotting groupedData

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?
   
  Thanks you very much,
   
  Bernard,
   
   

		
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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