[R] fit sine?

[Greg Snow]

Look at the functions: nls, optimize, optim.  Also look at the packages
circular and CircStats.

Hope this helps, 


-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at intermountainmail.org
(801) 408-8111
 

-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Randy Zelick
Sent: Tuesday, December 19, 2006 12:52 PM
To: R list server posting
Subject: [R] fit sine?

Hello list,

I am making scatterplots of data that vary sinusoidally over 24 hours. 
With a bit of previous help from this list, I now can get an x-axis with
time tics from 00:00 on the left edge to 12:00 in the middle and 00:00
on the right edge, i.e., just 24 hours.

Now I would like to fit a sin function to the plot. I've looked all over
CRAN and the web in general, but have not found a method or package for
this.

Can anyone make a suggestion?

Thanks,

=Randy=


Using R 2.4.0 on Solaris (unix).


R. Zelick				email: zelickr at pdx.edu
Department of Biology			voice: 503-725-3086
Portland State University		fax:   503-725-3888

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