[SciPy-dev] Matrix Structure Plots in scipy ?
nwagner at mecha.uni-stuttgart.de
Wed Oct 6 07:06:00 CDT 2004
Pearu Peterson wrote:
> On Wed, 6 Oct 2004, Nils Wagner wrote:
>> The number of outputs is more than described in help (io.mmio)
>> Reads the contents of the Matrix Market file 'filename' into
>> the matrix 'A'.
>> source - Matrix Market filename (extension .mtx) or open
>> file object.
>> a - sparse or full matrix
>> b,m,n,s = mmread('young1c')
>> should be used.
> Since the values for m,n,s are available via mminfo then I have
> changed the signature of mmread to
> a = mmread(source)
> Btw, one can now also write sparse matrices using mmwrite.
Is it also possible, that mmread returns sparse matrices when reading
sparse matrices from *.mtx ?
Is it generally possible to switch between sparse and dense format of
in scipy ?
Now, scipy has some iterative solvers for linear systems. Can I use both
dense and sparse matrices with respect to cg,... ?
How about sparse eigensolvers in scipy e.g. ARPACK ?
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