[R] Stacking of vectors to form a column vector

[MacQueen, Don]

Here are two correct uses of the "stack command", if by that you mean the
stack() function.

> stack( data.frame(a=1:3, b=4:6, c=7:9) )
  values ind
1      1   a
2      2   a
3      3   a
4      4   b
5      5   b
6      6   b
7      7   c
8      8   c
9      9   c

> stack( list(a=1:3, b=4:6, c=7:9) )
  values ind
1      1   a
2      2   a
3      3   a
4      4   b
5      5   b
6      6   b
7      7   c
8      8   c
9      9   c

I would say that the "values" column of the output fits your description
of what you want to do. (though I used names a, b, c instead of y1, y2,
y3).

But without a reproducible example, one can't say for sure.



-- 
Don MacQueen

Lawrence Livermore National Laboratory
7000 East Ave., L-627
Livermore, CA 94550
925-423-1062





On 4/29/15, 6:56 PM, "Olufemi Bolarinwa" <dafemlions at yahoo.co.uk> wrote:

>Hello,I am estimating a system of nonlinear equation where I need to
>stack my vector of y. I have data of about 6000units. I tried using the
>rbind but instead of having a vector of 1 by 18000, it is giving me a 3
>by 6000 so that my matrix multiplication is non-conformable. The stack
>command requires an identifier but in this case, I do not have a unique
>identifier.
>I would like to stack the the first 6000 units of y1 on the 2nd 6000
>units of y2 and 6000 units of y3.
>Any help will be greatly appreciated.
>ThanksOlufemi
>
> 
>
>	[[alternative HTML version deleted]]
>
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