Re: [R] model fitting with lme

2013-03-01 Thread Bert Gunter
You did not get any replies because this is largely off topic. Please stop posting here and post to the r-sig-mixed-models list instead. -- Bert On Fri, Mar 1, 2013 at 9:33 AM, KAYIS Seyit Ali wrote: > (Apologise for re-sending. I am re-sending in case subject name did not give > enough informa

[R] model fitting with lme

2013-03-01 Thread KAYIS Seyit Ali
(Apologise for re-sending. I am re-sending in case subject name did not give enough information. Any shared experience with lme is deeply appreciated) Dear all,   I have data from the following experimental design and trying to fit a mixed model with lme function according to following steps b

Re: [R] model fitting

2012-02-15 Thread Tsjerk Wassenaar
Hi Tony, ?nls Cheers, Tsjerk On Feb 15, 2012 8:03 PM, "Anthony Fristachi" wrote: Greetings, Any suggestions for approaching the fitting of the function y = b/exp(a*x) + c*x + y0 where a, b, c, and y0 are unknown constants and y and x are variables in a give dataset. Thanks Tony

[R] model fitting

2012-02-15 Thread Anthony Fristachi
Greetings, Any suggestions for approaching the fitting of the function y = b/exp(a*x) + c*x + y0 where a, b, c, and y0 are unknown constants and y and x are variables in a give dataset. Thanks Tony [[alternative HTML version deleted]]

Re: [R] Model fitting

2010-09-15 Thread Erik Iverson
Diogo B. Provete wrote: I have a data set and I want to procedure to model fitting (e.g., Poisson, Gausian, binomial, quasipoisson etc.). I'd like to know if there is an easier way to do this in R. Easier than what ? There is no shortage of R functions and packages to fit almost any type of

[R] Model fitting

2010-09-15 Thread Diogo B. Provete
I have a data set and I want to procedure to model fitting (e.g., Poisson, Gausian, binomial, quasipoisson etc.). I'd like to know if there is an easier way to do this in R. Thank you in advance. -- Atenciosamente, Diogo Borges Provete == Biólogo Mestre em Biologia A

Re: [R] Model fitting with GAM and "by" term

2009-06-24 Thread Gavin Simpson
On Tue, 2009-06-23 at 14:18 -0400, Paul Simonin wrote: > Hello R Users, > I have a question regarding fitting a model with GAM{mgcv}. I have data > from several predictor (X) variables I wish to use to develop a model to > predict one Y variable. I am working with ecological data, so have data

[R] Model fitting with GAM and "by" term

2009-06-23 Thread Paul Simonin
Hello R Users, I have a question regarding fitting a model with GAM{mgcv}. I have data from several predictor (X) variables I wish to use to develop a model to predict one Y variable. I am working with ecological data, so have data collected many times (about 20) over the course of two years. P

Re: [R] model fitting using by(): how to get fitted values?

2009-05-06 Thread Duncan Murdoch
On 06/05/2009 8:22 AM, xavier.char...@free.fr wrote: Hi all, I'm doing nonlinear regressions on data with several factors. I want to fit say a logistic curve with different parameter values for each factor level. So I'm doing something like: tmp <- by( myData, list(myFactor1, myFactor2), func

[R] model fitting using by(): how to get fitted values?

2009-05-06 Thread xavier . chardon
Hi all, I'm doing nonlinear regressions on data with several factors. I want to fit say a logistic curve with different parameter values for each factor level. So I'm doing something like: tmp <- by( myData, list(myFactor1, myFactor2), function(x) nls(...) ) It works fine. However, I could not