R help - Sep 2008 - Combining tables

Hello

Say I have the following data, and it's distribution given by table():

  > x <- c(1, 1, 1, 2, 2, 3)
  > tx <- table(x)
  > tx
  x
  1 2 3
  3 2 1

Now say I have new data,

  > y <- c(3, 3, 3, 3, 4)
  > ty <- table(y)
  > ty
  y
  3 4
  4 1

Is there a way to "combine" tx and ty in such a way to give me the
distribution below?

  1 2 3 4
  3 2 5 1

Essentially what I'm looking for is something equivalent to
table(c(x,y)), but x and y are too large and I'd like to avoid the
concatenation.

Thanks in advance,
Andre

try this:
> c(tx,ty)
1 2 3 3 4
3 2 1 4 1
> z <- c(tx,ty)
> tapply(z, names(z), sum)
1 2 3 4
3 2 5 1
>

On Sun, Sep 14, 2008 at 9:04 PM, Andre Nathan <andre at digirati.com.br>
wrote:
> Hello
>
> Say I have the following data, and it's distribution given by table():
>
>  > x <- c(1, 1, 1, 2, 2, 3)
>  > tx <- table(x)
>  > tx
>  x
>  1 2 3
>  3 2 1
>
> Now say I have new data,
>
>  > y <- c(3, 3, 3, 3, 4)
>  > ty <- table(y)
>  > ty
>  y
>  3 4
>  4 1
>
> Is there a way to "combine" tx and ty in such a way to give me
the
> distribution below?
>
>  1 2 3 4
>  3 2 5 1
>
> Essentially what I'm looking for is something equivalent to
> table(c(x,y)), but x and y are too large and I'd like to avoid the
> concatenation.
>
> Thanks in advance,
> Andre
>
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>


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

What is the problem that you are trying to solve?

Thanks Jim, it worked great!


On Sun, 2008-09-14 at 21:27 -0400, jim holtman wrote:
> try this:
> 
> > c(tx,ty)
> 1 2 3 3 4
> 3 2 1 4 1
> > z <- c(tx,ty)
> > tapply(z, names(z), sum)
> 1 2 3 4
> 3 2 5 1
> >