Re: [R] nlme starting values are not the correct length

elp-bounces@r- >> project.org] On Behalf Of Lara Reichmann >> Sent: Wednesday, December 05, 2012 1:53 AM >> To: r-h...@lists.r-project.org >> Subject: [R] nlme starting values are not the correct length >> >> Dear R community, >> >> I am trying to fit

[R] nlme starting values are not the correct length

Dear R community, I am trying to fit an nlme model where I want to estimate the fixed effects of two treatments on the parameters on the following equation Photo~(a*(1-exp(-c*PARi/a)))-b I was able to fit a simple model without covariates following the method described in Mixed-Effects Methods