
Convert your datasets into xts objects and then do a cbind ordering by the
column you want. Do a ?cbind.

HTH
Raghu

On Fri, Jul 30, 2010 at 10:33 AM, Lily_stats [via R] <
ml-node+2307770-1033893256-309606@n4.nabble.com<ml-node%2B2307770-1033893256-309606@n4.nabble.com>
> wrote:

> Hi,
>
> I am very new to R so these questions may seem simple!
>
> I have a huge 2 sets of data(matrix 5x20000++) in the following formats ,
> for example "data.txt" and "data2.txt":
>
> Date               Time             X           Y
> 03/03/1983      20:00           0.1          990
>
> I would like to recreate a new matrix which filters through "data.txt" and
> "data2.txt" to get something as below :
>
> Date             Time           X_data1              X_data2
>  Y_data1          Y_data2
> 31/12/2000     12:00         2.2                    5
>  0                    990
>
> So I basically need :
> 1) When Date AND Time from data1.txt and data2.txt match, list the
> corresponding X and Y values (X_data1,X_data2,Y_data1,Y_data2)
>
> Thank you in advance, and I hope I have been clear enough in my message
>
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-- 
'Raghu'

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