dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

What is the licensing situation with the code you have copied from the
MatrixMarket web page?

Next time you send some code, please try to send the code as a patch
(+ any additional new files) and send it directly to the mailing list.
(If it's not too big, then put the patch somewhere and post an url to
the patch so I or someone else of the maintainers can wget it.)

No need to resend the code this time, but I need to know that we can
safely distribute the code under the GPL, so whatever license the
original code uses, it needs to be a subset of the GPL.

/Anders

On Tue, Oct 18, 2005 at 01:01:06PM +0200, hetzel.devel@xxxxxx wrote:
> 
> Hi Andres,
> I attached a tar file for a first matrixmarket interface. It uses the files mmio.c (renamed to mmio.cpp) and mmio.h which you can get from the MatrixMarket homepage.
> It was neccessary to make some small adjustments to these files.
> File.cpp and File.h needed to be updated to incorporate the extentions ".mtx" and ".mat"
> MTXFile.cpp and MTXFile.h include the in and out routine for "normal" matrices and vectors.
> I tested the line with some simple files.
> The mail with the files will be send directly to you, to avoid sending them through the mailing list.
> 
> /Haiko
> 
> Discussion of DOLFIN development <dolfin-dev@xxxxxxxxxx> schrieb am 17.10.05 17:03:02:
> > 
> > On Mon, Oct 17, 2005 at 04:47:13PM +0200, hetzel.devel@xxxxxx wrote:
> > > 
> > > Hi, I'm currently implementing some stuff with dolfin and so I
> > > rewrote the C-interface to read and write my MatrixMarket
> > > matrices(http://math.nist.gov/MatrixMarket/) for dolfin.  The
> > > interface is quite simple and does not support the whole
> > > functionality of the MatrixMarket syntax, but I think this would be
> > > a good think to incorporate to dolfin.  So my question is: How can I
> > > help? Who is responsible for the io-stuff?
> > > 
> > > /Haiko
> > 
> > It would be good with support for the MatrixMarket format in DOLFIN.
> > 
> > I suggest you look at the files in the directory src/kernel/io. You
> > need to write a new class MTXFile as a subclass of GenericFile and
> > modify the class File so that files with extension .mtx or .mtx.gz are
> > coupled to the MTX format. Then matrices (and vectors?) can be written
> > to file in MatrixMarket format as follows:
> > 
> >     Matrix A;
> >     ...
> >     File file("matrix.mtx");
> >     file << A;
> > 
> > and read from file as follows:
> > 
> >     Matrix A;
> >     File file("matrix.mtx");
> >     file >> A;
> > 
> > We could add a new constructor to Matrix that allows us to do
> > 
> >     Matrix A("matrix.mtx");
> > 
> > and the implementation would just be
> > 
> >     File file(filename);
> >     file >> *this;
> > 
> > You will probably need to make MTXFile a friend of Matrix so you can
> > modify the matrix from within MTXFile at read.
> > 
> > /Anders
> > 
> > _______________________________________________
> > DOLFIN-dev mailing list
> > DOLFIN-dev@xxxxxxxxxx
> > http://www.fenics.org/cgi-bin/mailman/listinfo/dolfin-dev
> 
> 
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-- 
Anders Logg
Research Assistant Professor
Toyota Technological Institute at Chicago
http://www.tti-c.org/logg/