[R] selection from a list

Weiwei Shi helprhelp at gmail.com
Thu Oct 19 23:16:23 CEST 2006


hi,

i have a list which looks like this:

 $ :List of 3
  ..$ network: chr "xenobiotic_metabolism_1"
  ..$ error  : num 0.134
  ..$ table  : int [1:2, 1:2] 5 15 4 118
  .. ..- attr(*, "dimnames")=List of 2
  .. .. ..$ : chr [1:2] "0" "1"
  .. .. ..$ : chr [1:2] "0" "1"
  .. ..- attr(*, "class")= chr "table"
 $ :List of 3
  ..$ network: chr "dd_inflammation_r_genes"
  ..$ error  : num 0.0775
  ..$ table  : int [1:2, 1:2] 8 10 1 123
  .. ..- attr(*, "dimnames")=List of 2
  .. .. ..$ : chr [1:2] "0" "1"
  .. .. ..$ : chr [1:2] "0" "1"
  .. ..- attr(*, "class")= chr "table"
 $ :List of 3
  ..$ network: chr "ng_protein_folding_short_genes"
  ..$ error  : num 0.239
  ..$ table  : int [1:2, 1:2] 6 31 3 102
  .. ..- attr(*, "dimnames")=List of 2
  .. .. ..$ : chr [1:2] "0" "1"
  .. .. ..$ : chr [1:2] "0" "1"
  .. ..- attr(*, "class")= chr "table"


I am wondering how to select the component whose $error is, say, less than 0.1?

I can do unlist and transform it into a data.frame to do selection,
but I just want to learn if there is a way to do the list selection.

thanks,

-- 
Weiwei Shi, Ph.D
Research Scientist
GeneGO, Inc.

"Did you always know?"
"No, I did not. But I believed..."
---Matrix III



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