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

dadrivr dadrivr at gmail.com
Sun Sep 4 01:53:33 CEST 2011

Is it possible to change the color/thickness of the summary line in an
interaction.plot without changing the other individual data lines?  I would
like to make the line from the summary function (mean) the color red and
thicker than the surrounding black lines.  How can I do that?

Here is a link to interaction.plot:


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