R help - Aug 2008 - Line of best

Hi,

I have a scatter plot, with an equation that best fits the scatter plot
expressed as:  1/x^.6.  I know for normal linear regression lines you can use
the abline() command; however, since my best fit line is not linear, how can I
draw my line on the scatter plot in a similar fashion to abline().

Thanks for everyone's help again. I appreciate this board's advice.

Mark

Altaweel, Mark R. <maltaweel <at> anl.gov> writes:
> I have a scatter plot, with an equation that best fits
 the scatter plot expressed as:  1/x^.6.  I know for
> normal linear regression lines you can use the abline() command;
 however, since my best fit line is not
> linear, how can I draw my line on the scatter plot in a similar 
fashion to abline().

curve() or predict(): see

http://wiki.r-project.org/rwiki/doku.php?id=tips:graphics-misc:plotpredicted

See: ?loess or ?lowess

-gary



-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Altaweel, Mark R.
Sent: Wednesday, August 20, 2008 12:54 PM
To: r-help at r-project.org
Subject: [R] Line of best


Hi,

I have a scatter plot, with an equation that best fits the scatter plot
expressed as:  1/x^.6.  I know for normal linear regression lines you
can use the abline() command; however, since my best fit line is not
linear, how can I draw my line on the scatter plot in a similar fashion
to abline().

Thanks for everyone's help again. I appreciate this board's advice.

Mark

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