In R, when using named rows, can a sparse matrix column be added to another sparse matrix?
- by ayman
I have two sparse matrices, m1 and m2:
> m1 <- Matrix(data=0,nrow=2, ncol=1, sparse=TRUE, dimnames=list(c("b","d"),NULL))
> m2 <- Matrix(data=0,nrow=2, ncol=1, sparse=TRUE, dimnames=list(c("a","b"),NULL))
> m1["b",1]<- 4
> m2["a",1]<- 5
> m1
2 x 1 sparse Matrix of class "dgCMatrix"
b 4
d .
> m2
2 x 1 sparse Matrix of…
