?merge
What is the problem you are trying to solve?
Sent from my iPhone.
On Dec 15, 2009, at 4:50, "Bunny, lautloscrew.com" <bu...@lautloscrew.com
> wrote:
Hi all,
I dont know if match is the right approach here. I´d like to match t
o data.frames. One big dataframe and one small dataframe. In SQL, wh
at i want to do what only be simple relation.
The first consists of two columns a) some value b) some key that is
explained in the other dataframe. What i want to do is create
(cbind) both to one dataframe like:
df1:
a b
1 2
2 3
3 2
4 2
5 1
df2:
1 class1
2 class2
3 class3
to newdf:
a b class
1 2 class2
2 3 class3
3 2 class2
...
and so forth
I have connected R to several relational databases but I dont think
it´s necessary here and that there should be a simpler solution for
my problem. Maybe some combination of do.call, mapply, lapply or mat
ch can do the job.
Unfortunately I am not really familiar with these and still keep
tryin.
thx in advance for any help.
Best regards
matt
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