Hi. Thank you for your help. yes, thats exactly right - but the 1211x1211 matrix has some row/column elements that may not be present in x1. Is that the reason I get this error?
My matrix row names and column names are identical. I changed the order in my dput code for representational purpose so that they can have 1 for conveying question easily. Thanks A B C D E A B C D > for (i in nrow(x1)) { + x[x1$V1[i], x1$V2[i]] <- 1; + } Error in `[<-`(`*tmp*`, x1[i, ]$V1, x1[i, ]$V2, value = 1) : subscript out of bounds On Wed, Aug 13, 2014 at 8:28 AM, John McKown <john.archie.mck...@gmail.com> wrote: > On Tue, Aug 12, 2014 at 7:14 PM, Adrian Johnson <oriolebaltim...@gmail.com> > wrote: >> >> Hi: >> sorry I have a basic question. >> >> I have a data frame with two columns: >> > x1 >> V1 V2 >> 1 AKT3 TCL1A >> 2 AKTIP VPS41 >> 3 AKTIP PDPK1 >> 4 AKTIP GTF3C1 >> 5 AKTIP HOOK2 >> 6 AKTIP POLA2 >> 7 AKTIP KIAA1377 >> 8 AKTIP FAM160A2 >> 9 AKTIP VPS16 >> 10 AKTIP VPS18 >> >> >> I have a matrix 1211x1211 (using some elements in x1$V1 and some from >> x1$V2). I want to populate for every match for example AKT3 = TCL1A = 1 >> whereas AKT3 - VPS41 gets 0) >> How can i map this binary relations in x. >> >> >> >x >> TCLA1 VPS41 ABCA13 ABCA4 >> AKT3 0 0 0 0 >> AKTIP 0 0 0 0 >> ABCA13 0 0 0 0 >> ABCA4 0 0 0 0 >> > > <snip> > > I'm not totally sure that I understand your data structure. So I will > rephrase a bit so that I can be corrected, if necessary. You have an > 1211x1121 matrix already. Every cell in the matrix is initialized to 0. It > has column names such as TCLA1, VPS41, ABCA13, ABCA4, ... and it has row > names such as AKT3 AKTPI, ABCA13, ABCA4. The list "x1" has columns named V1 > and V2. V1 values are row names in the matrix. V2 values are column names in > the matrix. The following should do what you want. It is not a _good_ > solution because it is iterative. But it is a start > > for (i in nrow(x1)) { > x[x1$V1[i], x1$V2[i]] <- 1; > } > >> >> >> Thanks >> Adrian >> >> [[alternative HTML version deleted]] >> > > Please post in plain text, per the mailing list "rules". > > -- > There is nothing more pleasant than traveling and meeting new people! > Genghis Khan > > Maranatha! <>< > John McKown ______________________________________________ R-help@r-project.org mailing list 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.