[R] Converting a list to a data frame

Jeff Reichman re|chm@nj @end|ng |rom @bcg|ob@|@net
Sat Jul 24 23:32:06 CEST 2021


Thanks for the tips

-----Original Message-----
From: Rui Barradas <ruipbarradas using sapo.pt> 
Sent: Saturday, July 24, 2021 11:40 AM
To: reichmanj using sbcglobal.net; R-help using r-project.org
Subject: Re: [R] Converting a list to a data frame

Hello,

This should do it:


as.data.frame(weight_chains$mcmc)


The only list member already has a dim attribute of length 2 and dimnames' 2nd member are the colnames, just coerce to df.

Hope this helps,

Rui Barradas

Às 14:18 de 24/07/21, Jeff Reichman escreveu:
> How does one convert a list into a data frame?
> 
>   
> 
>> str(weight_chains)
> 
> List of 1
> 
> $ : 'mcmc' num [1:100000, 1:3] -105 -105 -105 -104 -103 ...
> 
>    ..- attr(*, "dimnames")=List of 2
> 
>    .. ..$ : NULL
> 
>    .. ..$ : chr [1:3] "a" "b" "s"
> 
>    ..- attr(*, "mcpar")= num [1:3] 1001 101000 1
> 
> - attr(*, "class")= chr "mcmc.list"
> 
>   
> 
> Such that ..
> 
>   
> 
>>
> 
> weight_chains
> 
> 
> 
>                 a         b         s
> 
> 1     -104.72512 1.0141407  9.369227
> 
> 2     -104.52297 1.0167432  9.131354
> 
> 3     -104.72669 1.0139528  9.219877
> 
>   
> 
> 
> 	[[alternative HTML version deleted]]
> 
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