Re: [R] comparison of parameters for nonlinear regression

2010-02-04 Thread Peter Ehlers
Nathalie Yauschew-Raguenes wrote: Hi, I have two series of data set (it's measurment of growth but under two different conditions). To model these data I use the same function which is : formula - y ~ Asym_inf + Asym_sup * ( (1 / (1 + (n1 * (exp( (tmid1-x) / scal1) )^(1/n1) ) ) ) - (1 / (1

Re: [R] comparison of parameters for nonlinear regression

2010-02-04 Thread Nathalie Yauschew-Raguenes
/Nathalie Yauschew-Raguenes wrote: / /Hi, I have two series of data set (it's measurment of growth but under two different conditions). To model these data I use the same function which is : formula - y ~ Asym_inf + Asym_sup * ( (1 / (1 + (n1 * (exp( (tmid1-x) / scal1) )^(1/n1) ) ) )

[R] comparison of parameters for nonlinear regression

2010-02-03 Thread Nathalie Yauschew-Raguenes
Hi, I have two series of data set (it's measurment of growth but under two different conditions). To model these data I use the same function which is : formula - y ~ Asym_inf + Asym_sup * ( (1 / (1 + (n1 * (exp( (tmid1-x) / scal1) )^(1/n1) ) ) ) - (1 / (1 + (n2 * (exp( (tmid2-x) / scal2)