[R] how to sort

[ONKELINX, Thierry]

You need both the name of the dataframe and the variable in the
dataframe.

dfCorTFandPCA[order(dfCorTFandPCA$PC1)] 


------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium
tel. + 32 54/436 185
Thierry.Onkelinx at inbo.be
www.inbo.be

To call in the statistician after the experiment is done may be no more
than asking him to perform a post-mortem examination: he may be able to
say what the experiment died of.
~ Sir Ronald Aylmer Fisher

The plural of anecdote is not data.
~ Roger Brinner

The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of
data.
~ John Tukey

-----Oorspronkelijk bericht-----
Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
Namens onyourmark
Verzonden: donderdag 18 juni 2009 5:17
Aan: r-help at r-project.org
Onderwerp: [R] how to sort


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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