Dear All,
I am a newbee in R an have the following problem. I have variables AB,BC,CD
to which outputs are assigned. Now AB[,1], for example, outputs a list,
which is a random combination of the following characters: "AB", "BC", "CD".
What I want to do is to build a 3x3 matrix with colnames and rownames equal
to "AB", "BC", "CD". Matrix values TRUE or FALSE shall then be automatically
assigned. Hence, if a colname of the matrix is represented in output AB, the
assigned value should be TRUE and otherwise FALSE.
I tried to do the following:
c.matrix<-matrix(NA,ncol=3,nrow=3);
colnames(c.matrix)<-cbind("AB", "BC", "CD");rownames(c.matrix)<-cbind("AB",
"BC", "CD");
c.matrix<-as.data.frame(c.matrix)
which produces:
AB BC CD
AB NA NA NA
BC NA NA NA
CD NA NA NA
Then for column AB I tried this in order to assign the TRUE/FALSE values to
the NA matrix:
for(i in 1:3)) {if (length(intersect(names(c.matrix)[[i]],AB[,1]))>0)
{c.matrix[[i,1]]=TRUE} else {condition.matrix[[i,1]]=FALSE}}
The output it produces is:
AB BC CD
AB <NA> NA NA
BC <NA> NA NA
CD FALSE NA NA
rather than something like:
AB BC CD
AB TRUE NA NA
BC FALSE NA NA
CD FALSE NA NA
What am I doing wrong? Thank you for your help.
Best Regards
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