[R] abline limit constrain x-range how?

[David Winsemius]

On May 15, 2010, at 10:03 AM, Giovanni Azua wrote:

> Hello,
>
> I managed to "linearize" my LDA decision boundaries now I would like  
> to call abline three times but be able to specify the exact x range.  
> I was reading the doc but it doesn't seem to support this use-case?  
> are there alternatives.

?segments
?lines

abline draws a line across the whole plot area, border to border. Both  
lines() and segments() will add to an existing plot (assuming it was  
done with base graphics).


> The reason why I use abline is because I first call plot to plot all  
> the three datasets and then call abline to "append" these decision  
> boundary lines to the existing plot ...
>
> Can anyone please advice?
> Thanks in advance,
> Best regards,
> Giovanni
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David Winsemius, MD
West Hartford, CT