[SciPy-dev] A typo in the sparse.csc_matrix docstring
Constantine Khroulev
c.khroulev@gmail....
Wed Mar 14 02:49:09 CDT 2007
Hello all,
I'm trying to build a CSC sparse matrix, and it seems like there is a typo in
the following docstring:
---------- beginning of the docstring ----------
Compressed sparse column matrix
This can be instantiated in several ways:
- csc_matrix(d)
with a dense matrix d
- csc_matrix(s)
with another sparse matrix s (sugar for .tocsc())
- csc_matrix((M, N), [nzmax, dtype])
to construct a container, where (M, N) are dimensions and
nzmax, dtype are optional, defaulting to nzmax=sparse.NZMAX
and dtype='d'.
- csc_matrix((data, ij), [(M, N), nzmax])
where data, ij satisfy:
a[ij[k, 0], ij[k, 1]] = data[k]
- csc_matrix((data, row, ptr), [(M, N)])
standard CSC representation
------------ end of the docstring --------------
According to the sparse.py itself, the line
"a[ij[k, 0], ij[k, 1]] = data[k]" should read "a[ij[0, k], ij[1, k]] = data[k]".
(Which I kind of like, because it makes porting things from MATLAB a little
easier -- no need to call zip()). :)
Thank you.
--
Constantine
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