Search Archives

Try xyplot(y~factor(x)...) or xyplot(y~x | factor(z)...) it depends on your data GS

if a and eps are parameters to be fitted X<-nls(y~x+exp(a*x)*eps, data=,start=list(a=,eps=))

d'habitude je mets juste xyplot(y~x | factor(z)...) ou xyplot(y~factor(x)... ) il faut mettre la variable dont tu veux voir les niveaux comme factor() GS

Ok, sorry for the critics, but I just find that sometimes some important subjects are rejected, and others are dicussed with intensity yet they are not that relevant, that's it! All apologise Guillaume Storchi

Some people think that this server is like msn messenger! I see that lots of people talk about some uninteresting things like G5 stuff or whatever, but nobody is able to think about real useRs' problems! Guillaume Storchi

How is it possible to "split" a data.frame in order to get classes with variable size. actually I'd like to get classes of data with classe size (cs) so that cs becomes bigger with an other increasing value...

Hello, I have a problem with nls() when I want to fit a model with more than two parameters to be fitted which are written as start=list(a1=,a2=,a3=,...). Everytime, it displays:'error... singular gradient' it's a...

first:I'd like to have the choice between breaking out a repeat loop or continue it then: i'd would like my code after the end of my repeat loop not to be read unless I type 2 (to...

> first:I'd like to have the choice between breaking out a repeat loop or > continue it > > then: i'd would like my code after the end of my repeat loop not to be read > unless I type 2 (to...

There's no real R user interface under linux, but it's not that better to have one...ESS/Emacs is pretty good! (you'll just get nervous when you'll want to save plots, look rplots up in goolge...

I'm doing a non linear regression with 8 parameters to be fitted: J.Tl.nls<-nls(Gw~(a1/(1+exp(-a2*Tl+a3))+a4)*(b1/(1+exp(b2*Tl-b3))+b4),data=Enveloppe, start=list(a1=0.88957,a2...