[R] collapse a list of dataframes

[William Dunlap]

I don't think that worked as OP would like it too - all columns of the
output
are factors.
>
 data.frame(rbind(as.matrix(data.frame(a=1:3,b=letters[1:3])),as.matrix(data.frame(x=1:5,b=LETTERS[1:5]))))
  a b
1 1 a
2 2 b
3 3 c
4 1 A
5 2 B
6 3 C
7 4 D
8 5 E
> str(.Last.value)
'data.frame':   8 obs. of  2 variables:
 $ a: Factor w/ 5 levels "1","2","3","4",..: 1 2 3 1 2 3 4 5
 $ b: Factor w/ 8 levels "a","A","b","B",..: 1 3 5 2 4 6 7 8

If you want the retain the types of the columns, leave out those as.matrix()
calls (and then there is no need to call data.frame on rbind's output).



Bill Dunlap
TIBCO Software
wdunlap tibco.com

On Tue, Feb 3, 2015 at 12:56 PM, JS Huang <js.huang at protective.com> wrote:

> Hi,
>
>   The following worked.
>
> >
> data.frame(rbind(as.matrix(data.frame(a=1:3,b=letters[1:3])),as.matrix(data.frame(x=1:5,b=LETTERS[1:5]))))
>   a b
> 1 1 a
> 2 2 b
> 3 3 c
> 4 1 A
> 5 2 B
> 6 3 C
> 7 4 D
> 8 5 E
>
>
>
> --
> View this message in context:
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> Sent from the R help mailing list archive at Nabble.com.
>
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