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Dear R users, I want to conduct a small simulation study and I have to use the lme function in a loop to save the restricted log likelihood. However, for one simulated data set the lme function gives this error Error en lme.formula(yboot ~ X[, -1], data = data.fr, random = Z.block) : nlminb problem, convergence error code = 1 message = singular convergence (7) and then, the

...ster*, University of Chicago & Argonne National Laboratory, USA Program Co-Chairs * *Daniel S. Katz*, University of Chicago & Argonne National Laboratory, USA * *Heinz Stockinger*, SIB Swiss Institute of Bioinformatics, Switzerland Workshops Chair * *Ruth Pordes*, FNAL, USA Sponsorship Chair * *Charlie Catlett*, Argonne National Laboratory, USA Conference Manager and Finance Chair * *Julie Wulf-Knoerzer*, University of Chicago & Argonne National Laboratory, USA Publicity Chairs * *Kento Aida*, National I...

...ster*, University of Chicago & Argonne National Laboratory, USA Program Co-Chairs * *Daniel S. Katz*, University of Chicago & Argonne National Laboratory, USA * *Heinz Stockinger*, SIB Swiss Institute of Bioinformatics, Switzerland Workshops Chair * *Ruth Pordes*, FNAL, USA Sponsorship Chair * *Charlie Catlett*, Argonne National Laboratory, USA Conference Manager and Finance Chair * *Julie Wulf-Knoerzer*, University of Chicago & Argonne National Laboratory, USA Publicity Chairs * *Kento Aida*, National I...