Re: [R] disaggregate frequency table into flat file

From: jim holtman <jholtman_at_gmail.com>
Date: Thu, 22 May 2008 08:43:41 -0400

Not exactly clear what you are asking for. Your data.frame.table does not seem related to the original 'orig'. What exactly are you expecting as output?

On Wed, May 21, 2008 at 10:16 PM, maiya <maja.zaloznik_at_gmail.com> wrote:

>
> i appologise for the trivialness of this post - but i've been searching the
> forum wothout luck - probably simply because it's late and my brain is
> starting to go..
>
> i have a frequency table as a matrix:
>
> orig<-matrix(c(40,5,30,25), c(2,2))
> orig
> [,1] [,2]
> [1,] 40 30
> [2,] 5 25
>
> i basically need a random sample say 10 from 100:
>
> [,1] [,2]
> [1,] 5 2
> [2,] 0 3
>
> i got as far as
>
> orig<-as.data.frame.table(orig)
> orig
> Var1 Var2 Freq
> 1 A A 10
> 2 B A 5
> 3 A B 30
> 4 B B 25
>
> and then perhaps
>
> individ<-rep(1:4, times=orig$Freq)
>
> which gives a vector of the 100 individuals in each of the 4 groups -
> cells,
> but I'm
> (a) stuck here and
> (b) afraid this is a very round-about way at getting to what I want i.e. I
> can now sample(individ, 10), but then I'll have a heck of a time getting
> the
> result back into the original matrix form....
>
> sorry again, just please tell me the simple solution that I've missed?
>
> thanks!
>
> maja
>
> --
> View this message in context:
> http://www.nabble.com/disaggregate-frequency-table-into-flat-file-tp17396040p17396040.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help_at_r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>

-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?

	[[alternative HTML version deleted]]

______________________________________________
R-help_at_r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Received on Thu 22 May 2008 - 12:53:25 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Thu 22 May 2008 - 14:30:39 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive