[julia-users] Fastest way to update a sparse matrix?

[Gabriel Goh]

Hey,

I have a sparse matrix 

A = [ C  D
      E  F ]

now if I want to update F with another matrix with the exact same sparsity 
structure, what would be the easiest way to do it efficiently? Ideally, I'd 
just update the relevant values in rowval directly, but it seems messy to 
extract which indicies correspond to what.

Thanks!
Gabe