Yes!  Would you mind filing an issue so I dont forget?
Hadley

On Friday, July 29, 2011, Stavros Macrakis <macrakis@alum.mit.edu> wrote:
> Perfect!  Thanks!
> By the way, I see that, unlike base rbind, it does not work for vectors
and lists:
>     rbind(c(a=1),c(b=2)) => matrix(1:2,2,1,dimnames=list(NULL,"a"))
== as.matrix(data.frame(a=1:2))
> but
>      rbind.fill(c(a=1),c(b=2)) => NULL
> Shouldn't it give something like
>      matrix(c(1,NA,NA,2),2,2,dimnames=list(NULL,c("a","b")))
> or
>      data.frame(a=c(1,NA),b=c(NA,2))
> If, on the other hand, it insists on data.frames as input, it should err
out if give non-data-frames.
>             -s
>
> On Thu, Jul 28, 2011 at 19:30, Hadley Wickham <hadley@rice.edu> wrote:
>>
>> Use plyr::rbind.fill?   That does match up columns by name.
>> Hadley
>>
>> On Thu, Jul 28, 2011 at 5:23 PM, Stavros Macrakis <macrakis@alum.mit.edu>
wrote:
>> > I have a file of data where each line is a series of name-value pairs,
but
>> > where the names are not necessarily the same from line to line, e.g.
>> >    a=1,b=2,d=5
>> >    b=4,c=3,e=3
>> >    a=5,d=1
>> > I would like to create a data frame which lines up the data in the
>> > corresponding columns.  In this case, this would be
>> >    data.frame( a = (1, NA, 4), b = (2, 4, NA), c = (NA, 3, NA), d = (5,
NA,
>> > 1), e = (NA, 3, 1) )
>> > One way I can think of doing this is to read in the data as one 'long'
data
>> > frame per line with a unique ID, e.g. line one becomes
>> >      cbind(id=1,data.frame(variable=c('a','b','d'),value=c(1,2,5)))
>> > then rbind all the lines and use the reshape package function 'cast'.
>> > Is there a more straightforward way?  (I'd have thought rbind would
line up
>> > columns by name, but it doesn't.)
>> >             -s
>> >
>> > --
>> > You received this message because you are subscribed to the Google
Groups
>> > "manipulatr" group.
>> > To post to this group, send email to manipulatr@googlegroups.com.
>> > To unsubscribe from this group, send email to
>> > manipulatr+unsubscribe@googlegroups.com <
manipulatr%2Bunsubscribe@googlegroups.com>.
>> > For more options, visit this group at
>> > http://groups.google.com/group/manipulatr?hl=en.
>> >
>>
>>
>>
>> --
>> Assistant Professor / Dobelman Family Junior Chair
>> Department of Statistics / Rice University
>> http://had.co.nz/ <http://had.co.nz/>
>
>

-- 
Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
http://had.co.nz/

	[[alternative HTML version deleted]]

