[R] Rows not common in dataframes

[Rui Barradas]

Hello,

See also ?setdiff

Hope this helps,

Rui Barradas
Em 24-09-2012 08:30, Milan Bouchet-Valat escreveu:
> Le lundi 24 septembre 2012 à 13:22 +1000, Chintanu a écrit :
>> Hi,
>>
>> I have two dataframes (Dataframe_A, Dataframe_B) with the same no. of
>> columns. The first column of both the dataframes contains unique names.
>> I wish to have Dataframe_A with the rows that are NOT common to
>> Dataframe_B.
> So you just want to drop some rows from A? In that case, do:
> Dataframe_A <- Dataframe_A[!Dataframe_A[[1]] %in% Dataframe_B[[2]],]
>
>> With merge (), it is possible to get the common rows or to merge rows, but
>> I am not quite sure how to do it in a simpler way. Any help would be much
>> appreciated.
> No need for merge, as all rows you need are already in A.
>
>
> My two cents
>
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