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

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

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

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),