This mostly seemed like a condensation of what had been said
before ... threads from the past which were readily available through
searching.
http://finzi.psych.upenn.edu/R/Rhelp02/archive/20370.html
http://finzi.psych.upenn.edu/R/Rhelp02/archive/73750.html
http://finzi.psych.upenn.edu/R/Rhelp02/archive/90168.html
install.packages("fortunes"); library(fortunes); fortune("curious")
http://finzi.psych.upenn.edu/Rhelp10/2009-April/196676.html
https://stat.ethz.ch/pipermail/r-help/2002-July/023461.html
http://finzi.psych.upenn.edu/R/Rhelp02/archive/35450.html
--
David.
On Mar 16, 2011, at 2:33 PM, Anna Gretschel wrote:
Am 16.03.2011 19:29, schrieb Heiman, Thomas J.:
Hi Anna,
AIC and BIC are good criteria for determining degree of model fit..
Sincerely,
tom
Thomas Heiman, PhD
Info Systems Eng, Sr
The MITRE Corporation | Center for Enterprise Modernization
Office: 703-983-2951 | thei...@mitre.org
-----Original Message-----
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org
] On Behalf Of Anna Gretschel
Sent: Wednesday, March 16, 2011 2:09 PM
To: Bert Gunter
Cc: r-help@r-project.org
Subject: Re: [R] R² for non-linear model + comparing linear + non-
linear models
Dear Bert,
so what can I do to obtain a goodness of fit for a non-linear model
if
r² does not work?
And here comes my next question: is it apropriate to comopare a
linear
and a non-linear model with anova()?
Thank you so much for answering,
Anna
Am 16.03.2011 18:54, schrieb Bert Gunter:
Is there any way that this could be made into a fortune -- perhaps
by
omitting the poster's identity?
"yes there are threads concidering this topic but they are all
about the
theory not about how to get the value of r^2 for a non-linear
model in R."
:=)
Cheers,
Bert
Anna: I say this because you have just been told that the "theory"
tells you that you CANNOT calculate R^2 for a nonlinear model.
On Wed, Mar 16, 2011 at 10:25 AM, Anna Gretschel<ana-...@web.de>
wrote:
Am 16.03.2011 18:15, schrieb David Winsemius:
On Mar 16, 2011, at 12:53 PM, Anna Gretschel wrote:
Dear List,
how can I obtain the value of r suqared for a non-linear model?
For
linear models it can be found in the summary() of the model but
for
non-linear models I just don't know. Please help!
You should do more searching. I can remember at least two
threads in the
last few years that discussed this issue.
yes there are threads concidering this topic but they are all
about the
theory not about how to get the value of r^2 for a non-linear
model in R.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Thank you so much! Anna
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
West Hartford, CT
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
