Message-ID: <CADv2QyGpHihXx8du1=jGJm=qa_smg6i6kpaGWoxfmTAh2W4qog@mail.gmail.com>
Date: 2011-10-17T21:32:00Z
From: Dennis Murphy
Subject: Converting list of lists into dataframes
In-Reply-To: <1318885907544-3913433.post@n4.nabble.com>
In the absence of a reproducible example (your example is not
reproducible as is), try this:
names(help.me) <- as.character(2:4)
library('plyr')
newDF <- ldply(help.me, rbind)
newDF[['.id']] <- as.numeric(newDF[['.id']])
ldply will create a new column named .id that contains the name of the
list component (hence the choice of names). The post-processing to
convert the characters to numeric values should get you the result you
want.
HTH,
Dennis
On Mon, Oct 17, 2011 at 2:11 PM, xhan <xhan at lifesci.ucsb.edu> wrote:
> 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~
>
> --
> View this message in context: http://r.789695.n4.nabble.com/Converting-list-of-lists-into-dataframes-tp3913433p3913433.html
> Sent from the R help mailing list archive at Nabble.com.
>
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