[R] Change properties of line summary in interaction.plot

David Winsemius dwinsemius at comcast.net
Wed Sep 7 23:49:59 CEST 2011

On Sep 7, 2011, at 4:49 PM, dadrivr wrote:

> David Winsemius wrote:
>> What "mean summary line"? I count 8 lines and that matches the number
>> if id's with complete data.
> Yea, I don't know why there is no mean summary line showing up.  I  
> requested
> it in the interaction.plot statement (fun = mean), and I don't get any
> errors.  Any ideas?

You didn't get any errors and you _did_ get the means. It's just that  
you only gave it a dataset that had only one value per category. The  
mean is defined for a single element vector although the sd and var  
are not. Look more closely at the example on the help page and you  
will see that it has more than one value per category defined by the  
two interaction variables
> --
> View this message in context: http://r.789695.n4.nabble.com/Change-properties-of-line-summary-in-interaction-plot-tp3788614p3797231.html

You are still failing to include context. I've seen the Nabble  
interface. I KNOW that it is not that difficult to include context.

> Sent from the R help mailing list archive at Nabble.com.
> ______________

David Winsemius, MD
West Hartford, CT

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