It is correct and will produce a data.frame. But I guess the result is not what you intend since the resulting data.frame nothing but NA and Samples in the diagonal:
df1 <- data.frame(x = letters[1:5], y = letters[6:10]) reshape2::dcast(df1, x ~ y) You are missing values somewhere. If you want all possible combinations of Cancer_Gene and Sample, look at expand.grid: expand.grid(df1) HTH Ulrik On Fri, 26 May 2017 at 11:26 Bogdan Tanasa <tan...@gmail.com> wrote: > Dear all, I would like to double-check with you please the use of "acast" > or "dcast" function from "reshape2"package. > > I am starting with a data frame Y of GENES and SAMPLES,eg : > > Cancer_Gene Sample > 1 ABL2 WT_10T > 2 ABL2 WT_6T > 3 ADGRA2 HB_8R > 4 AFF4 EWS_13R > > and I would like to have a dataframe/matrix of CANCER_GENES * SAMPLES. > > Shall I do " dcast(Y, Cancer_Gene ~ Sample)", would it be correct ? thank > you ! > > -- bogdan > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
