[R] multiple nls - next fit even after convergence problem

2007-08-04 Thread GOUACHE David
Hello R-gurus, I'm trying to adjust different growth curves to a rather extensive dataset. I wrote up a function to go through all of them, but am encountering a problem : among the more than 1000 curves I have, obviously for some of them I encounter conversion problems. I'd like for my function

Re: [R] multiple nls - next fit even after convergence problem

2007-08-04 Thread Gabor Grothendieck
See: https://stat.ethz.ch/pipermail/r-help/2005-May/072035.html On 8/4/07, GOUACHE David [EMAIL PROTECTED] wrote: Hello R-gurus, I'm trying to adjust different growth curves to a rather extensive dataset. I wrote up a function to go through all of them, but am encountering a problem :

Re: [R] multiple nls - next fit even after convergence problem

2007-08-04 Thread Dieter Menne
GOUACHE David D.GOUACHE at arvalisinstitutduvegetal.fr writes: ... This is my original function : comp.fit.2-function(tab) { fit.log-nls(surf.vert.tot ~ 100/(1+exp(((log(81))/a)*(sum.T.levee-b))), start=list( ... I've thought of just storing the 3 model results in a list, and then