*Hi,*
*
*
*i think that you are making a mistake. When you use *
*
*
order(rownames(snp.matrix$fam)) you're sorting the data, so it will be in
the same order of the data_one.

If rownames() are defined correctly in data_one, you only have to do:

data_one[rownames(snp.matrix$fam),]

Note that it's good to check if all elements from rownames(snp.matrix$fam)
are in rownames(data_one).

setdiff( rownames(snp.matrix$fam),rownames(data_one))
setdiff(rownames(data_one),rownames(snp.matrix$fam))
*
*
*
*
*
*
*
*
Atenciosamente,
Leandro Marino
http://www.leandromarino.com.br (Fotógrafo)
http://est.leandromarino.com.br/Blog (Estatístico)
Cel.: + 55 21 9845-7707
Cel.: + 55 21 8777-7907



2012/3/5 francesca casalino <francy.casalino@gmail.com>

> Hi, I am trying to match the order of the rownames of a dataframe with
> the rownames of another dataframe (I can't simply sort both sets
> because I would have to change the order of many other connected
> datasets if I did that): Also, the second dataset (snp.matrix$fam) is
> a snp matrix slot:
>
> so for example:
>
> data_one:
>                                        x                    y
>    z
> sample_1110001    -0.3352623     -1.141462    -0.4032494
> sample_1110005     0.1862424      0.015944     0.1329059
> sample_1110420     0.1309120   0.004005596    0.06117253
> sample_2220017     0.1145205  -0.125090054    0.04957881
>
> rownames(snp.matrix$fam)
>  [1] "sample_2220017" "sample_1110420" "sample_1110001"
>  [4] "sample_1110005"
>
> I would like my data_one to look like this:
>                               x                           y
>            z
> sample_2220017     0.1145205  -0.125090054    0.04957881
> sample_1110420     0.1309120   0.004005596    0.06117253
> sample_1110001    -0.3352623     -1.141462    -0.4032494
> sample_1110005     0.1862424      0.015944     0.1329059
>
>
> I have tried these but it doesn't work:
> data_one[order(rownames(snp.matrix$fam)),]
> data_one[rownames(data_oen)[order(rownames(snp.matrix$fam))],]
>
> Thank you for your help!
>
> ______________________________________________
> 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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