Message-ID: <3A822319EB35174CA3714066D590DCD504AF762C@usrymx25.merck.com>
Date: 2004-01-15T20:13:45Z
From: Liaw, Andy
Subject: plotting predicted values (lines) over data?
> From: Jeff D. Hamann
>
> I've been trying to plot the predicted values, as a line,
> over the data for
> a simple nonlinear fit with the following commands:
>
> plot( hg ~ ht )
> ... define some function hg ~ ht + junk ...
> ... blah, blah, obtain parameter estimates and predicted
> values, blah...
> ... then...
> lines( sort( $predicted ) ~ sort( ht ) )
This doesn't look right to me. Don't you want something like:
ord <- order(ht)
lines(ht[ord], fit$predicted[ord], ...)
???
Andy
> which results in a line that isn't smooth (which I knew would
> happen). I've
> checked the FAQ,docs and archives and I'm not sure if there's
> function that
> will so what Heut et. al (2004) do with their plfit(). So, is
> there already
> an R function, or process to do this, or will I have to write one?
>
> Thanks,
> Jeff.
>
> ---
> Jeff D. Hamann
> Forest Informatics, Inc.
> PO Box 1421
> Corvallis, Oregon USA 97339-1421
> (office) 541-754-1428
> (cell) 541-740-5988
> jeff.hamann at forestinformatics.com
> www.forestinformatics.com
>
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