[R] how to plot a differential equation?

2007-08-01 Thread Montse Rue
Hi, I would like to plot the following equation: dF(x)/dx=(k1+k2F(x))(1-F(x)) where k1 and k2 are parameters that I have estimated already. How can I plot the curve in R? Thanks! Montserrat Rue Universitat de Lleida (Spain) [[alternative HTML version deleted]] __

Re: [R] lme: random effects of a quadratic term

2005-03-26 Thread Montse Rue
km^2) . Can it be that S accepts day^2 but R doesn't? Thanks again! Montse On Sat, 26 Mar 2005 17:39:43 + (GMT), Prof Brian Ripley <[EMAIL PROTECTED]> wrote: > On Sat, 26 Mar 2005, Montse Rue wrote: > > > Thanks! I already tried it, but then I have problems with the

Re: [R] lme: random effects of a quadratic term

2005-03-26 Thread Montse Rue
Mar 2005, Montse Rue wrote: > > > I am estimating the following model: > > > > so2.lme<-lme(so2~1+I(alcadakm^2)+dia,data=subjectes2,na.action=na.omit) > > > > And when I try to plot the random effects of the quadratic term with > > respect to a covariate (mam

[R] lme: random effects of a quadratic term

2005-03-26 Thread Montse Rue
lmeRE,form=I(alcadakm^2)~mam) Error in plot.ranef.lme(so2.lmeRE, form = I(alcadakm^2) ~ mam ) : Only single effects allowed in left side of form. Any suggestion? Thanks! Montse Rue __ R-help@stat.math.ethz.ch mailing list https://stat.eth