I have the following object (summary of tukeyHSD). How can i retrieve the characters "S-H" "SI-H" and "SI-S" I though that tuk.dat$disease[x,] would do it but is not, neither tuk.dat$disease[[x]] Can you help me ? str(tuk.dat$disease) num [1:3, 1:4] 25.245 -0.176 -25.421 14.653 -9.512 ... - attr(*, "dimnames")=List of 2 ..$ : chr [1:3] "S-H" "SI-H" "SI-S" ..$ : chr [1:4] "diff" "lwr" "upr" "p adj"

Finally managed to do it... rownames(tuk.dat$disease[])[x] On 29/07/10 14:12, David martin wrote: > I have the following object (summary of tukeyHSD). How can i retrieve > the characters "S-H" "SI-H" and "SI-S" > > I though that tuk.dat$disease[x,] would do it but is not, neither > tuk.dat$disease[[x]] > > Can you help me ? > > str(tuk.dat$disease) > num [1:3, 1:4] 25.245 -0.176 -25.421 14.653 -9.512 ... > - attr(*, "dimnames")=List of 2 > ..$ : chr [1:3] "S-H" "SI-H" "SI-S" > ..$ : chr [1:4] "diff" "lwr" "upr" "p adj" > > _______________________________________________ > Bioconductor mailing list > Bioconductor at stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: > http://news.gmane.org/gmane.science.biology.informatics.conductor >

Hi, this is not really a Bioconductor question and should have been asked on the more general R-help list. Nevertheless, the answer is given on the help page of TukeyHSD. Each element of the result list is a matrix and can be accessed accordingly. So tuk.dat$disease[1,1] will return the first element of the matrix (see ?Extract) and rownames(tuk.dat$disease[1,1]) will return its row names. HTH, Joern On Thu, 29 Jul 2010 14:12:04 +0200, David martin wrote > I have the following object (summary of tukeyHSD). How can i > retrieve the characters "S-H" "SI-H" and "SI-S" > > I though that tuk.dat$disease[x,] would do it but is not, neither > tuk.dat$disease[[x]] > > Can you help me ? > > str(tuk.dat$disease) > num [1:3, 1:4] 25.245 -0.176 -25.421 14.653 -9.512 ... > - attr(*, "dimnames")=List of 2 > ..$ : chr [1:3] "S-H" "SI-H" "SI-S" > ..$ : chr [1:4] "diff" "lwr" "upr" "p adj" > > _______________________________________________