Thank you, Steve and Sarah, for your swift replies.
I didn't know about dput(). class() returns "matrix" for A, B, and C, but
here:
> class(A)
[1] "matrix"
> class(B)
[1] "matrix"
> dput(A)
structure(list(1239814462, 1239814601, 14349, 3, 4, 0, 12, 46601,
17801, 12401, 106001), .Dim = c(1L, 11L), .Dimnames = list(
NULL, c("a", "b", "c", "d", "e", "f", "g", "h", "i", "j",
"k")))
> dput(B)
structure(c(1239197400, 1239199200, 1239202800, 1239199199, 1239202799,
1239206399, 14342, 14342, 14342, 3, 3, 3, 0, 0, 0, 0, 0, 0, 9,
10, 11, 35999, 39599, 43199, 7199, 10799, 14399, 1799, 5399,
8999, 1799, 5399, 8999), .Dim = c(3L, 11L), .Dimnames = list(
NULL, c("a", "b", "c", "d", "e", "f", "g", "h", "i", "j",
"k")))
> C <- rbind(A,B)
> dput(C)
structure(list(1239814462, 1239197400, NULL, NULL, 1239814601,
1239199200, NULL, NULL, 14349, 1239202800, NULL, NULL, 3,
1239199199, NULL, NULL, 4, 1239202799, NULL, NULL, 0, 1239206399,
NULL, NULL, 12, 14342, NULL, NULL, 46601, 14342, NULL, NULL,
17801, 14342, NULL, NULL, 12401, 3, NULL, NULL, 106001, 3,
NULL, NULL), .Dim = c(4L, 11L), .Dimnames = list(NULL, c("a",
"b", "c", "d", "e", "f", "g", "h", "i", "j", "k")))
But how do I convert A to the appropriate form for rbinding? Not simply
with as.matrix(). Witness:
> dput(as.matrix(A))
structure(list(1239814462, 1239814601, 14349, 3, 4, 0, 12, 46601,
17801, 12401, 106001), .Dim = c(1L, 11L), .Dimnames = list(
NULL, c("a", "b", "c", "d", "e", "f", "g", "h", "i", "j",
"k")))
I think we're closer but I still need your help!
Nick
On Tue, May 1, 2012 at 12:02 PM, Steve Lianoglou <
mailinglist.honey...@gmail.com> wrote:
> Hi,
>
> On Tue, May 1, 2012 at 11:52 AM, Nick Switanek <nswita...@gmail.com>
> wrote:
> > Good morning,
> >
> > I'm running into trouble rbind-ing numeric matrices with differing
> numbers
> > of rows. In particular, there seem to be issues whenever a one-row
> numeric
> > matrix is involved.
> >
> > Assume A is a numeric matrix with 1 row and Y columns and B is a numeric
> > matrix with X rows and Y columns. Let C be the result of rbinding A and
> B.
> > Then C is a numeric matrix with X + 1 rows and Y columns, only instead of
> > the rows of B being "stacked" beneath the row of A as expected, the
> first Y
> > elements of the 1st column of B are placed in the 2nd row of C, the
> > remaining values of B are discarded, and NULL values fill out the rest of
> > the matrix C.
> >
> > The number of columns of A and B match. The colnames of A and B match.
> Both
> > are numeric matrices. I've pored over the rbind/cbind documentation but
> > can't identify why I'm getting this behavior from rbind. I'd be extremely
> > grateful for your suggestions or thoughts.
>
> If everything you say is true (and I'm understanding what you're
> saying), there must be something else going on with your data.
> Consider:
>
> R> m1 <- matrix(-(1:5), nrow=1)
> R> m2 <- matrix(1:20, ncol=5)
> R> rbind(m1, m2)
> [,1] [,2] [,3] [,4] [,5]
> [1,] -1 -2 -3 -4 -5
> [2,] 1 5 9 13 17
> [3,] 2 6 10 14 18
> [4,] 3 7 11 15 19
> [5,] 4 8 12 16 20
>
> Can you provide a small example of your data that reproduces the
> problem you're seeing?
>
> Construct these objects in your workspace and copy/paste the output of
> dput on your m1 and m2 matrices so we can easily work w/ them.
>
> Cheers,
> -steve
>
> --
> Steve Lianoglou
> Graduate Student: Computational Systems Biology
> | Memorial Sloan-Kettering Cancer Center
> | Weill Medical College of Cornell University
> Contact Info: http://cbio.mskcc.org/~lianos/contact
>
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