R help - Jul 2008 - plot(linear model) without lines

running R 2.5.1 on WinXP.

plot(model formula here) produces 4 useful residual diagnostic plots.  Two
questions about them:

1.  How can I isolate just one of the four, and have only that one be shown? 
str(plot(model)) didn't give me any insight.

2.  How can I make the lines (I guess they are lowess lines) not appear on the
plots?

Thanks.

--Chris Ryan

See ?plot.lm


cryan at binghamton.edu wrote:
> running R 2.5.1 on WinXP.
> 
> plot(model formula here) produces 4 useful residual diagnostic plots.  Two
questions about them:
> 
> 1.  How can I isolate just one of the four, and have only that one be
shown?  str(plot(model)) didn't give me any insight.
> 
> 2.  How can I make the lines (I guess they are lowess lines) not appear on
the plots?
> 
> Thanks.
> 
> --Chris Ryan
> 
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