[R] creating a data frame from a list

From: Dimitri Szerman <dimitrijoe_at_ipea.gov.br>
Date: Wed 05 Jul 2006 - 14:46:38 EST


Dear all,

I have a list with three (named) numeric vectors:

> lst = list(a=c(A=1,B=8) , b=c(A=2,B=3,C=0), c=c(B=2,D=0) )
> lst

$a
A B
1 8

$b
A B C
2 3 0

$c
B D
2 0

Now, I'd love to use this list to create the following data frame:

> dtf = data.frame(a=c(A=1,B=8,C=NA,D=NA),

+                  b=c(A=2,B=3,C=0,D=NA),
+                  c=c(A=NA,B=2,C=NA,D=0) )


> dtf
a b c A 1 2 NA B 8 3 2

C NA 0 NA
D NA NA 0

That is, I wish to "merge" the three vectors in the list into a data frame by their "(row)"names. Any suggestions? Thanks in advance for youR-Help.

Dimitri

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