[R] parallel computing package on a multicore windows workstation

2011-06-05 Thread Richard Wang
Hi, I would like to get suggestion about parallel computing package on a multicore windows workstation. I tried doSMP, but it crashes R a lot. I am wondering if "snow" and "snowfall" can be used on a single workstation (i,e, not cluster). At suggestion would be appreciated, Best, Richard

Re: [R] install rdcomclient source

2011-05-03 Thread Richard Wang
Thanks. I didn't know that. I just found it in Brian Ripley's page. Is this the cran extras? Thanks Richard On 3 May 2011, at 13:19, Uwe Ligges wrote: > > > On 03.05.2011 14:09, Richard Wang wrote: >> Thanks. One more question. If I use install.packsges, do I

Re: [R] install rdcomclient source

2011-05-03 Thread Richard Wang
Thanks. One more question. If I use install.packsges, do I need to install Rtool or utils package is sufficient? Thanks, Richard On 3 May 2011, at 12:26, Uwe Ligges wrote: > > > On 02.05.2011 23:48, Richard Wang wrote: >> Hi, >> >> I'd like to ask a i

[R] install rdcomclient source

2011-05-02 Thread Richard Wang
Hi, I'd like to ask a installation question. I want to install a source code through the following command, R CMD INSTALL RDCOMClient but get Error: unexpected symbol in "r cmd" Please let know if I miss anything. I my utils package loaded. Thanks, Richard [[alternative HTML version

[R] Generate normally distributed correlation matrix

2011-04-28 Thread Richard Wang
Hi, I would like to ask a statistics questions. One way to generate a correlation matrix with normally distributed entries is by generating a matrix A with uniform or normal rows. Then normalize each row to get B. Then B times transpose B is the desired matrix. However, the standard deviat