From: "Bruno Luong" <b.luong@fogale.findmycountry>
Newsgroups: comp.soft-sys.matlab
Subject: Re: how solve a tridiagonal equation system when we are in three dimensional space?
Date: Sat, 13 Apr 2013 16:02:08 +0000 (UTC)
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"ghasem " <> wrote in message 

> in your code,How convert X from sparse to full matrix,again?

> > X = zeros(ny,nxnz);

In my code X preallocated with ZEROS() is a _full_ matrix. It never becomes sparse.