[R] How to convert matrix with frequency & variable to vector?

[Joshua Wiley]

Hi Nanthinee,

Use ?rep it will rep()licate each x, freq times.

dat <- data.frame(freq = c(30, 70, 100, 22, 250), x = c(7, 8, 7, 6, 10))
total <- rep(dat$x, dat$freq)
> length(total)
[1] 472

Cheers,

Josh


On Thu, Jul 7, 2011 at 9:24 PM, nanthinee <nanthineej at gmail.com> wrote:
> Hi,
>
> I have a dataset:
>
>  freq   x
> 1  30    7
> 3  70    8
> 4  100  7
> 5  22    6
> 6  250  10
>
> How do I convert into vector form (v<- 7,7,7,8,8,8,6,6,6,6) all "x" with the
> complete frequency? Transpose only does a single row but I want the full
> frequencies not just the variable transposed.
>
> Thanks,
> Nanthinee
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/How-to-convert-matrix-with-frequency-variable-to-vector-tp3653196p3653196.html
> Sent from the R help mailing list archive at Nabble.com.
>
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-- 
Joshua Wiley
Ph.D. Student, Health Psychology
University of California, Los Angeles
https://joshuawiley.com/