[R] nlme help

I would like to fit a nonlinear model with "nlme." The model is a nonlinear growth model with five time points: y = X*b + e, where design matrix X is defined as X= | 1 0 | | 1 1 | | 1 k | | 1 2k | | 1 3k | and parameter vector b = (b0, b1). And where "k" is a parameter

[R] NLME question...

I would like to fit a nonlinear model with "nlme." The model is a nonlinear growth model with five time points: y = X*b + e, where design matrix X is defined as X= | 1 0 | | 1 1 | | 1 k | | 1 2k | | 1 3k | and parameter vector b = (b0, b1). And where "k" is

[R] nlme question

I would like to fit a nonlinear model with "nlme." The model is a nonlinear growth model with five time points: y = X*b + e, where design matrix X is defined as X= | 1 0 | | 1 1 | | 1 k | | 1 2k | | 1 3k | and parameter vector b = (b0, b1). And where "k" is