[R] Converting list of lists into dataframes

xhan xhan at lifesci.ucsb.edu
Mon Oct 17 23:11:47 CEST 2011


Hi,

I have a list of lists that I would like to convert into a dataframe such
that the name(?) of the individual lists is replicated as rows with each
item in the list listed in another column.

I have provided a partial from my list: (let's say the list is called
"help.me")

[[2]]
  [1] 18 27 11 18 12 15 12 14  7 17 15 16 12 19 14 21 13 13 20 20 16 15 18
11 14
 [26] 10 11 15  9 16 12 17 20 12 11 15 15 16 14 14 12 15 14 11 19 12 18 24
12  8
 [51] 14 13 13 15 16  9 13 11 17  8  8 15 18 11 12 16 12 12 12 13 12 25 21
11  8
 [76] 19  5 10 13 16 11 13 11 16  7 12 15 15 16 11  9 10 15  7 16 12 11 13
12 12

[[3]]
  [1] 18 27 12 18 18 17 12 16  7 17 16 18 14 19 16 22 13 14 22 20 16 15 20
14 14
 [26] 11 11 16  9 16 12 19 20 12 11 17 15 17 14 14 14 15 15 11 19 13 18 25
13 10
 [51] 14 13 14 15 18 10 13 11 18 12 10 15 20 13 12 17 13 13 12 16 12 26 22
11  8
 [76] 21  6 10 14 18 11 14 11 16  8 14 17 16 17 11 10 10 16  7 20 13 11 13
12 14

[[4]]
  [1] 18 27 12 18 18 17 12 16  7 17 16 18 14 19 16 22 13 14 22 20 16 15 20
14 14
 [26] 11 11 17  9 16 12 19 20 12 11 17 15 17 14 14 14 15 15 11 19 13 18 25
13 10
 [51] 14 13 14 15 18 10 13 11 18 12 10 15 20 13 12 17 13 13 12 17 12 26 22
11  8
 [76] 21  6 10 14 18 11 14 11 16  8 14 17 17 17 11 10 10 16  7 20 13 11 13
12 14

What I would like is two columns: 
Column1                Column2
2                          18
2                          27
2                          11
2                          18
2                          12
2                          15
.                           .
.                           .
.                           .
3                          18
3                          27
3                          12
.                           .
.                           .
.                           .

And so forth. I would appreciate any help, thanks so much!

Shirley~

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