[BioC] comparing data frames

Adaikalavan Ramasamy ramasamy at cancer.org.uk
Tue May 4 18:20:41 CEST 2004

See help(match).

Note that match returns the _first_ match. AFAIK, the probeset ids are
unique within any given cdf file, so this should not be a problem.

On Tue, 2004-05-04 at 17:02, Straubhaar, Juerg wrote:
> I have two data frames with a name column containing affy probeset ids. I would like to pull out the ids (just the ids) which are common in both data frames. (Actually, I could just have to character vectors and would like to print the common elements).
> I tried this approach:
> for (elx in x) {for (ely in y) {if (elx==ely) print(ely)}}
> x, y : character vectors
> This prints out the correct result but I am not able to assign the resulting probesets and it also seems quite an inelegant solution.
> Thank you for your help.
> Juerg Straubhaar
> UMass Med School
> _______________________________________________
> Bioconductor mailing list
> Bioconductor at stat.math.ethz.ch
> https://www.stat.math.ethz.ch/mailman/listinfo/bioconductor

More information about the Bioconductor mailing list