Hi Ony,

If you got a data.frame with  dfCorTFandPCA=as.data.frame(corTFandPCA)
so you can try something like:

orderedCorTFandPCA=dfCorTFandPCA[order(dfCorTFandPCA$PC1),]

May be you can also try force PC1 to be numeric with:.


orderedCorTFandPCA=dfCorTFandPCA[order(as.numeric(as.character(dfCorTFandPCA$PC1))),]

Good luck

milton
brazil=toronto





On Wed, Jun 17, 2009 at 11:16 PM, onyourmark <william108@gmail.com> wrote:

>
> Hi. I have an object. I think it is a list.
>
> > str(corTFandPCA)
>  num [1:922, 1:5] -0.0226 -0.0504 -0.0208 -0.0582 -0.0257 ...
>  - attr(*, "dimnames")=List of 2
>  ..$ : chr [1:922] "abdomen.2" "abdomimal.3" "abdominal.4" "aberration.5"
> ...
>  ..$ : chr [1:5] "PC1" "PC2" "PC3" "PC4" ...
>
> I want to order it according to PC1.
>
> I tried this
>
>  dfCorTFandPCA=as.data.frame(corTFandPCA)
> > orderedCorTFandPCA=dfCorTFandPCA[order(PC1)]
> Error in order(PC1) : object 'PC1' not found
>
> but get that error. Can someone tell me what the best way to do this is?
> Thank you.
> --
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