[R] Optimization problem

[José E. Lozano]

Hello:
 
> Here is a general approach using smoothing using the Gasser-Mueller
kernel,
> which is implemented in the "lokern" package.   The optimal bandwidth for
> derivative estimation is automatically chosen using a plug-in
approximation.
> The code and the results are attached here.

Maybe am I missing the "features.mat" function?

Probably the function is inside the file "features.txt", that is not
included.

> source("features.txt")

Thanks a lot,
Jose Lozano