# [R] Fw: PROBLEM - - COMPARING AND COMBINING two DATASETS

Gabor Grothendieck ggrothendieck at gmail.com
Thu Aug 27 16:09:17 CEST 2009

```Try this:

xtabs(B ~ factor(A, seq(max(A))))

On Thu, Aug 27, 2009 at 8:26 AM, Maithili Shiva<maithili_shiva at yahoo.com> wrote:
>
>
>
>
>
>
>
> Dear Sirs,
>
> At the outset I sincerely apologize for reproducing my query to you. I also thank all of you for the solution you had provided. It has worked on the actual data I am working with.
>
> However, there is this peculiar problem which I had realized only after I had obtained my results.
>
> e.g. in the example I had attached
>
> A <- c(2, 2, 1, 3, 7, 3, 3, 1, 14, 7, 31)
> B <- c(0.0728,0.9538,4.0140,0.0020,2.5593,0.1620,2.513,0.3798, .0033,0..2282, 0.1614)
>
> tapply( B, A, sum)
>
> I get R output as –
>
>  1          2          3            7            14          31
> 4.3938   1.0266   2.6770    2.7875    0.0033    0.1614
>
> However, my requirement is I should get the output as
>
> 1          2          3         4  5  6  7         8  9 …. 14 ………..31
> 4.3938 1.0266  2.6770   0  0  0  2.7875  0  0 ..0.0033 .. 0.161
>
> i.e. my output should include the values 4, 5, 6, etc. which are not part of dataset A and the corresponding totals in B (which are anyways 0’s). I need this for my further analysis. Its possible for me to add these 0’s manually, however when the dataset is large, its not practical.
>
> I am attaching herewith an excel file. I will be grateful if you can guide me.
>
>
> Maithili
> start: 2009-08-18 end: 0000-00-00
>
> Thinking of ordering food? Find restaurant numbers on Yahoo! India Local
>
>
>      Love Cricket? Check out live scores, photos, video highlights and more. Click here http://cricket.yahoo.com
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help