Re: [R] SQLDF from Variable Matrix

2010-08-04 Thread Gabor Grothendieck
On Wed, Aug 4, 2010 at 12:29 AM, Suphajak Ngamlak wrote: > Dear all, > > I would like to do sample statistics, e.g. mean, median from very large > dataset. This is part of commands I use routinely with several dataset > so I would like to make it into function. The simplified examples are > > Test

[R] SQLDF from Variable Matrix

2010-08-03 Thread Suphajak Ngamlak
Dear all, I would like to do sample statistics, e.g. mean, median from very large dataset. This is part of commands I use routinely with several dataset so I would like to make it into function. The simplified examples are Test<-data.frame(A=c('a','b','c','a','b','c'),B=c(1,2,3,4,5,6)) #Create f