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<body class='hmmessage'><div dir='ltr'><br><br><div>> From: jedbrown@mcs.anl.gov<br>> To: pengxwang@hotmail.com; petsc-users@mcs.anl.gov<br>> Subject: RE: [petsc-users] extract vector for a 2-D plane from a DM vector for a 3-D domain<br>> Date: Wed, 16 Oct 2013 09:59:34 -0500<br>> <br>> Roc Wang <pengxwang@hotmail.com> writes:<br>> > Is it possible I have both cases? 1 a few planes in the same<br>> > communicator; 2 many planes to separate communicator.<br>> <br>> Yeah, just create the VecScatter however you like.<br><br>I studied some examples for VecScatter. To my understand, the pathway of extracting the plane is through extracting indexes (IS idx_to) of the 2-D plane from the vector of the 3-D domain(IS idx_from). To do this, I have to create an array of index for IS idx_to and create the corresponding IS by ISCreateGeneral(). Am I right? Thanks for your informative response.<br></div> </div></body>
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