[R] select a subset of a matrix which one of its column meet a condition

[Rui Barradas]

Hello,

Your matrix has only 4 columns but you refer to met[,5]. I'll assume 
you're refering to the last column, met[,4]. Try reading the help page 
for ?%in%, it doesn't do what you seem to think it does. And try using <=.

maf <- met[0 <= met[, 4] & met[, 4] <= 0.05, ]

Hope this helps,

Rui Barradas

Em 08-07-2015 16:37, Lida Zeighami escreveu:
> Hi there,
>
> I have a matrix and I want to get a subset from that which one of its
> matrix meet a condition,
>
> my matrix is
> met
>       Row.names             Name
> maf                                   caf
> 1 10:100003915      10:1000039              0.0003782148
> 0.0003782148
> 2 10:100008738      10:100008738           0.0003759398
>   0.0003759398
> 3 10:100011321      10:100011321           0.0003762227
>   0.0003762227
> 4 10:100012219      10:100012219           0.0007518797
> 0.0007518797
> 5 10:100013325      10:100013325          0.0000000000
>   0.0000000000
> 6 10:100015404      10:100015404          0.0000000000
> 0.0000000000
>
> I want to choose a subset from "met" which maf values are between 0 and
> 0.05 (0,0.05)
>
> I wrote this code, but seem doesn't work properly:
>
>> maf<- met[which(c(met[,5]) %in% c(0,0.05)),]
>
> the dim(maf)  is 0 so seems my code didn't work!
> would please let me know how to correct it?
>
> Thanks
>
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>
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