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I made a pull request for text-base DenseBase input.
https://bitbucket.org/eigen/eigen/pull-request/73/text-based-densebase-input
For more text formats or even binary formats, let's add DenseBase
methods?
Cheers,
Chen-Pang
On Mon, Jul 21, 2014 at 01:02:42, Chen-Pang He wrote:
> I'd like to implement text-based input, extending
> Eigen/src/Core/IO.h. I'm trying to use IOFormat class.
> It will at least be able to read Eigen's output.
>
> Cheers,
> Chen-Pang
>
> On Sat, Jul 19, 2014 at 18:02:23，Kolja Brix wrote:
> > Dear Eigen enthusiasts,
> >
> > currently I am looking for matrix IO, in particular matrix IO from and
> > to files.
> >
> > Up to now, I know about the following solutions:
> >
> > * In eigen/unsupported/Eigen/src/SparseExtra there is MarketIO.h, which
> > loads sparse matrices from and saves them to files in Matrix Market
> > format, which is an ASCII format.
> >
> > * There is an extension of Eigen, which saves Eigen matrices to HDF5
> > format <http://www.hdfgroup.org/HDF5/> and reads them back in, both
> > using the HDF5 library and a C++ wrapper. The code can be found on
> > <https://github.com/garrison/eigen3-hdf5>.
> > The advantage of the HDF5 format is that it handles different byte order
> > on different systems and can store and handle multiple matrices in a
> > single file. Unfortunately, the implementation currently needs C++11,
> > while the author claims that it is easy to make
> > the code compatible with C++98.
> >
> >
> > So in the first case, there is neither support for binary IO nor for
> > dense matrices. In the second case, an extra library is needed and
> > currently C++98 is not supported.
> >
> > Is there another, maybe more native solution? If not, can we come up
> > with a simple but efficient solution? What should the API look like?