Re: [R] search a value in variables dataset

From: Uwe Ligges <ligges_at_statistik.uni-dortmund.de>
Date: Fri 21 Oct 2005 - 00:50:07 EST

Muhammad Subianto wrote:

> Dear R-list,
> I have a dataset, say (the real dataset is 20 columns,110200 rows).
>
> > my.reducedID
> V1 V2 V3 V4 V5 V6 V7 V8 V9
> [1,] 1 0 0 1 14 3 1 0 2
> [2,] 2 0 0 1 14 3 1 0 2
> [3,] 0 1 0 1 14 2 1 0 2
> [4,] 0 0 1 1 14 3 1 0 2
> [5,] 0 1 1 0 14 2 1 0 2
> [6,] 0 0 0 1 14 3 1 0 2
> [7,] 0 0 0 1 0 3 1 0 2
> [8,] 0 0 0 1 1 3 1 0 2
> [9,] 0 0 0 1 2 3 1 0 2
> [10,] 0 0 0 1 3 3 1 0 2
> [11,] 0 0 0 1 4 3 1 0 2
> [12,] 0 0 0 1 5 3 1 0 2
> [13,] 0 0 0 1 6 3 1 0 2
> [14,] 0 0 0 1 7 3 1 0 2
> [15,] 0 0 0 1 8 3 1 0 2
> [16,] 0 0 0 1 9 3 1 0 2
> [17,] 0 0 0 1 10 3 1 0 2
> [18,] 0 0 0 1 11 3 1 0 2
> [19,] 0 0 0 1 12 3 1 0 2
> [20,] 0 0 0 1 13 3 1 0 2
> [21,] 0 0 0 1 15 3 1 0 2
> [22,] 0 0 0 1 16 3 1 0 2
> [23,] 0 0 0 1 17 3 1 0 2
> [24,] 0 0 0 1 18 3 1 0 2
> [25,] 0 0 0 1 19 3 1 0 2
> [26,] 0 0 0 1 20 3 1 0 2
> [27,] 0 0 0 1 14 0 1 0 2
> [28,] 0 0 0 1 14 1 1 0 2
> [29,] 0 0 0 1 14 2 1 0 2
> [30,] 0 0 0 1 14 4 1 0 2
> >
>
> I want to search a value in variables, say V1=0, V5=14 and V6=2.
> The result should look like
> V1 V2 V3 V4 V5 V6 V7 V8 V9
> [3,] 0 1 0 1 14 2 1 0 2
> [5,] 0 1 1 0 14 2 1 0 2
> [29,] 0 0 0 1 14 2 1 0 2
>
> I can do this with: my.reducedID[c(3,5,29),]
> Because I have very large dataset I can not make this manual.
> Then I need the ID of row did not change, I mean like,
> [3,]
> [5,]
> [29,]
> In dataset this is about ID our customers.
> I was wondering if anyone give me a trick to make simple.
> Thanks you very much for any suggestions.

Without having tested:

   with(my.reducedID, rownames(V1==0 & V5==14 & V6==2))

Uwe Ligges

> Best, Muhammad Subianto
>
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Fri Oct 21 01:34:33 2005

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