HI Bert, thank you for getting back to me. I tried this:
> dat <- cbind(mc, matrix(0,ncol = 34)) > head(dat) FID IID PLATE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 1 fam0110 G110 4RWG569 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 fam0113 G113 cherry 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 fam0114 G114 cherry 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 fam0117 G117 4RWG569 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 fam0118 G118 5XAV049 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 fam0119 G119 cherry 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 23 24 25 26 27 28 29 30 31 32 33 34 1 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 4 0 0 0 0 0 0 0 0 0 0 0 0 5 0 0 0 0 0 0 0 0 0 0 0 0 6 0 0 0 0 0 0 0 0 0 0 0 0 > names(dat) <- c(names(dat)[1:34], unique(dat$PLATE)) Error in names(dat) <- c(names(dat)[1:34], unique(dat$PLATE)) : 'names' attribute [68] must be the same length as the vector [37] so names should include FID,IID,PLATE plus unique dat$PLATE how do I fix that so the code works? Also I tried a bit on my own: > head(mc) FID IID PLATE 1 fam0110 G110 4RWG569 2 fam0113 G113 cherry 3 fam0114 G114 cherry 4 fam0117 G117 4RWG569 5 fam0118 G118 5XAV049 6 fam0119 G119 cherry ... m2=tapply(mc$IID, list(FID=mc$FID, PLATE=mc$PLATE), mean) m2=as.data.frame(m2) library(data.table) m3=setDT(m2, keep.rownames = TRUE)[] colnames(m3)[1] <- "FID" mt=merge(mc,m3,by="FID") > head(mt) FID IID PLATE 0VXC556 1CNF297 1CWO500 1DXJ626 1LTX827 1SHK635 1TNP840 1 fam0110 G110 4RWG569 NA NA NA NA NA NA NA 2 fam0113 G113 cherry NA NA NA NA NA NA NA 3 fam0114 G114 cherry NA NA NA NA NA NA NA 4 fam0117 G117 4RWG569 NA NA NA NA NA NA NA 5 fam0118 G118 5XAV049 NA NA NA NA NA NA NA 6 fam0119 G119 cherry NA NA NA NA NA NA NA 1URP242 2BKX529 2PAG415 3DEF425 3ECO791 3FQM386 3KYJ479 3XHK903 4RWG569 1 NA NA NA NA NA NA NA NA NA 2 NA NA NA NA NA NA NA NA NA 3 NA NA NA NA NA NA NA NA NA 4 NA NA NA NA NA NA NA NA NA 5 NA NA NA NA NA NA NA NA NA 6 NA NA NA NA NA NA NA NA NA ... so this gives me the correct columns. Now is the question of how to replace NA with 2 id column name matches the rownname in PLATE column with 2 otherwise it is 1. Cheers, Ana On Tue, Sep 29, 2020 at 11:46 AM Bert Gunter <bgunter.4...@gmail.com> wrote: > > I am not sure reshape2 is appropriate for this task, but, assuming I > understand correctly, it's quite easy without it. The following is one way, > which probably can be done more elegantly and efficiently, but I think it > does what you want. > > "dat" is your example data frame, in which the columns were read in with > "stringsAsFactors" = FALSE (this is important!) > > dat <- cbind(dat, matrix(0,ncol = 3)) ## change 3 to 34 for your full data > names(dat) <- c(names(dat)[1:3], unique(dat$PLATE)) > for(i in 4:ncol(dat)) dat[,i] <- 1 + (names(dat)[i]== dat$PLATE) > dat > > Result: > > FID IID PLATE 4RWG569 cherry 5XAV049 > 1 fam0110 G110 4RWG569 2 1 1 > 2 fam0113 G113 cherry 1 2 1 > 3 fam0114 G114 cherry 1 2 1 > 4 fam0117 G117 4RWG569 2 1 1 > 5 fam0118 G118 5XAV049 1 1 2 > 6 fam0119 G119 cherry 1 2 1 > > > Bert Gunter > > "The trouble with having an open mind is that people keep coming along and > sticking things into it." > -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) > > > On Tue, Sep 29, 2020 at 9:19 AM Ana Marija <sokovic.anamar...@gmail.com> > wrote: >> >> Hello, >> >> I have a data frame like this: >> >> > head(mc) >> FID IID PLATE >> 1 fam0110 G110 4RWG569 >> 2 fam0113 G113 cherry >> 3 fam0114 G114 cherry >> 4 fam0117 G117 4RWG569 >> 5 fam0118 G118 5XAV049 >> 6 fam0119 G119 cherry >> ... >> > dim(mc) >> [1] 1625 4 >> > length(unique(mc$PLATE)) >> [1] 34 >> >> I am trying to make a new data frame which would look like this: >> FID IID PLATE 4RWG569 cherry 5XAV049 ... >> 1 fam0110 G110 4RWG569 2 1 1 >> 2 fam0113 G113 cherry 1 2 1 >> 3 fam0114 G114 cherry 1 2 1 >> 4 fam0117 G117 4RWG569 2 1 1 >> 5 fam0118 G118 5XAV049 2 1 1 >> 6 fam0119 G119 cherry 1 2 1 >> ... >> >> so the new data frame would have an additional 34 columns (for every >> unique mc$PLATE) and if in the row of PLATE column the value is ==to >> that column name I would have 2 otherwise 1 >> >> I tried to do this with: >> >> library(reshape2) >> > m2=dcast(mc, IID ~ PLATE) >> Using PLATE as value column: use value.var to override. >> >> Please advise, >> Ana >> >> ______________________________________________ >> 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. ______________________________________________ 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.