[R] subsetting dataframe multiple conditions
ruipbarradas at sapo.pt
Thu May 9 21:44:00 CEST 2013
It's difficult to know what's going on without a data example. Can you
post the output of
Maybe the columns are not of class "character" but of class "factor".
You should also post the output of
In the mean time, try
subset(data, column1 != "a" & column2 != "b")
Hope this helps,
Em 09-05-2013 17:28, KatrinH Heimann escreveu:
> Dear all,
> I would like to subset a dataframe using multiple conditions.
> So if I have two columns 1 and 2, I would like to EXCLUDE all rows in which
> the value of column 1 is "a" AND the value of column 2 is "b".
> I tried data[(data$column1 != "a" & data$column2 != "b"),] but that deletes
> me every row in which either 1 is "a" or 2 is "b".
> Any ideas?
> Thanks so much
> [[alternative HTML version deleted]]
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
More information about the R-help