set a column of a matrix

Umut Tabak u.tabak at
Sun Nov 1 10:57:23 CST 2009

On Sun, Nov 01, 2009 at 07:44:58AM -0600, Barry Smith wrote:
>    MatSetValues() so long as you have good matrix preallocation this  
> will work fine.
>    Doing a transpose is very expensive.
Dear Barry and Matt,

     Thanks for the replies, I am not doing anything in parallel. I
     should use MatSetValues with appropriate column and row indices.
     Actually, what I would like to do, I would like to set up a
     vectorset(rectangular) and assign to a block in a matrix. Is 
     there a vectorset that I could use directly to somehow put 
     these vectors directly into this set. And use this vectorset to
     set some part of a matrix.

     Thanks for the advice in advance.

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