Problem with interaction.plot()

Hi,

I encountered a problem when I did interaction plots using the
interaction.plot() function. The labels for the trace factor appeared on
the plot when I did the plots in separate windows, but disappeared/cut off
when multiple plots were placed in one window. Can anybody help me?

The calculation of the width of the legend is really difficult in that
case in goes wrong, because it is based on heuristics for a single plot.
I'll send a bug report in a few minutes.

As a workaround I'd suggest to use interaction.plot(..., legend=FALSE)
and add a legend with legend() manually.

Uwe Ligges
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