[petsc-users] create a new large vector via combining existing small vectors

[Xiangdong Liang]

Hello everyone,

I have a problem with creating a new large vector via combining existing
small vectors. Suppose I have two vectors v1 and v2 (size n-by-1) already. I
want to have a new vector vout (size 2n-by-1) with vout(1:n) = v1 and
vout(n+1:2*n) = v2. Is there any quick way to create vout with Petsc's built
in functions? Thanks.

Best,
Xiangdong
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