Re: [Pysparse-users] transpose operation

[Fergus G. <fe...@go...>]

> The find/put method is surely the fastest in general. The more
> fundamental question is do you really need the explicit transpose?
> Often, algorithms that need the transpose operate directly on the
> original matrix. If what you need is matrix-vector products of the form
> A.T*x, you can always use the matvec_transp() method. If you're using
> the higher-level PysparseMatrix objects, you can do A*x and x*A. The
> latter actually computes A.T*x.
>
> I hope this helps.
>

Hi, 

thanks for all the replies.

What we want to do is generate the "outer product"  A*B^T  (actually A*A^T
in our case). 

Regards

-- 
Fergus Gallagher

"Setting a good example for children takes all the fun out of middle
age." - William Feather