Thanks, Jeff.

Here is a simplified hypothetical sample (sorry for the clumsy code):
A1 <- matrix(1:5, nrow=5, ncol=1)
A2 <- matrix(6:10, nrow=5, ncol=1)
A3 <- matrix(11:15, nrow=5, ncol=1)
A4 <- matrix(16:20, nrow=5, ncol=1)
A5 <- matrix(21:25, nrow=5, ncol=1)
A6 <- matrix(26:30, nrow=5, ncol=1)
B1 <- matrix(c(A1, A2, A3), nrow=5, ncol=3)
B2 <- matrix(c(A2, A3, A4), nrow=5, ncol=3)
B3 <- matrix(c(A3, A4, A5), nrow=5, ncol=3)
C <- array(c(B1, B2, B3), dim = c(5,3,3))
D1 <- matrix(c(A1, A4, A5), nrow=5, ncol=3)
D2 <- matrix(c(A3, A5, A6), nrow=5, ncol=3)
E <- array(c(D1, D2), dim = c(5,3,2))
In the above example, I want to merge array C to array E by matching the
column 1. That is, the resultant array F should look like this:
F1 <- matrix(c(A1, A4, A5, A2, A3), nrow=5, ncol=5)
F2 <- matrix(c(A3, A5, A6, A4, A5), nrow=5, ncol=5)
F <- array(c(F1, F2), dim = c(5,5,2))

I want to have a more general way to do the merging because in reality, the
dimensions of C and E are very over thousands. Thank you very much.

Best Regards,
ray


On Fri, Feb 22, 2013 at 11:28 AM, Jeff Newmiller
<jdnewmil@dcn.davis.ca.us>wrote:

> I think this specification is insufficient to respond accurately to.
> Please make a reproducible subset of your data (or simulated data) and
> provide it in dput form, and describe your desired result data set more
> clearly.
>
>
> http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example
>
> ---------------------------------------------------------------------------
> Jeff Newmiller                        The     .....       .....  Go Live...
> DCN:<jdnewmil@dcn.davis.ca.us>        Basics: ##.#.       ##.#.  Live
> Go...
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> ---------------------------------------------------------------------------
> Sent from my phone. Please excuse my brevity.
>
> Ray Cheung <ray1728@gmail.com> wrote:
>
> >Dear All,
> >
> >I've 2 arrays A and B:
> >
> >dim(A) = 100, 10, 1000
> >dim(B) = 100, 20, 900
> >
> >I know there are 5 columns of values common to both arrays. I want to
> >ask
> >how to merge the 2 arrays. Thanks in advance!
> >
> >Best Regards,
> >Ray
> >
> >       [[alternative HTML version deleted]]
> >
> >______________________________________________
> >R-help@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.
>
>

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