Dear all,
I have a data frame
a <- data.frame(cbind(x=c('a','a','a','b','c'),
y=c('a','b','c','d','e'),z=c(1,2,3,4,5)))
> a
x y z
1 a a 1
2 a b 2
3 a c 3
4 b d 4
5 c e 5
and a matrix
mm <- matrix(0,5,5)
colnames(mm) <- c('a','b','c','d','e')
rownames(mm) <- c('a','b','c','d','e')
> mm
a b c d e
a 0 0 0 0 0
b 0 0 0 0 0
c 0 0 0 0 0
d 0 0 0 0 0
e 0 0 0 0 0
How to populate matrix in a way that first column of data frame 'a'
correspond to rownames(mm), second column to colnames(mm) and the third
column is the element of matrix 'mm'?
Thanks in advance,
Andrej
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