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I don't want to re-invent the wheel, and I'm trying to code up something that does a Nelder-Mead simplex method to minimise a non-linear objective function. (I'm porting something I originally wrote in matlab, using the optimisation toolbox funciton fmins). Is there already something available to do this included in R? Do people have suggestions on the best way to do this? Thanks,

Hi I am using rsync for backup on the disks of a Linux backup server. Obviously the server could store more data it the data were compressed. I read the "rsync -> tar" thread. Unfortunately, a compressed file system for Linuthere does not seem to exist yet. However, rsync can use compression for file transfer. Would it be possible to implement an option to store the data on the