Re: [R] Getting the R squared value in asymptotic regression model

2013-01-12 Thread David Winsemius
On Jan 12, 2013, at 5:04 PM, Ahmed Attia wrote: > So what is the best method to test the goodness of fit in nonlinear > models? Did you read the citation offered? -- David. > > On Sat, Jan 12, 2013 at 4:34 PM, David Winsemius > wrote: > > On Jan 12, 2013, at 3:30 PM, Ahmed Attia wrote: > >

Re: [R] Getting the R squared value in asymptotic regression model

2013-01-12 Thread David Winsemius
On Jan 12, 2013, at 3:30 PM, Ahmed Attia wrote: Please help getting the R squared value in asymptotic regression model I use the code below model1<-nls(GN1~SSasymp (nrate,a,b,c), data = data.1 ) and R produced the modell coefficients without the R squared value? What makes you think there

[R] Getting the R squared value in asymptotic regression model

2013-01-12 Thread Ahmed Attia
Please help getting the R squared value in asymptotic regression model I use the code below model1<-nls(GN1~SSasymp (nrate,a,b,c), data = data.1 ) and R produced the modell coefficients without the R squared value? -- Ahmed M. Attia Research Assistant Dept. Of Soil&Crop Sciences Texas A&M