Re: [ojAlgo-user] Strange matrix multiplication problem

[Anders P. <an...@op...>]

On 10 dec 2007, at 14.20, Tor Erik Askeland wrote:

> Hi,
>
> I'm quite new to ojAlgo and I'm trying to do a matrix multiplication.
>
> Here is the snippet of code I'm trying to run:
>
>    r = sx.multiplyRight(currentState);
>    r = r.add(sxPrev.multiplyRight(previousState));
>
> Where sx is 12x2, currentState is 2x1, sxPrev is 12x2 and
> previousState is 2x1. They are all the type PrimitiveMatrix, but I'm
> just using the BasicMatrix interface. R is a BasicMatrix by the way.
>
> This should result in r being a vector of size 12x1, but the computer
> just hangs on the first line and doesn't run past it.

Never experienced "just hanging" with ojAlgo. Can you step through  
the code in the debugger to see what happens?

Does  using multiplyLeft instead work?

r = currentState.multiplyLeft(sx);

/Anders


> The second line does however run properly if the first line is  
> commented out.
>
> Have anyone got any suggestions to what the problem might be?
>
>
> Tor Erik
>
>
> ---------------------------------------------------------------------- 
> ---
> SF.Net email is sponsored by:
> Check out the new SourceForge.net Marketplace.
> It's the best place to buy or sell services for
> just about anything Open Source.
> http://sourceforge.net/services/buy/index.php
> _______________________________________________
> ojAlgo-user mailing list
> ojA...@li...
> https://lists.sourceforge.net/lists/listinfo/ojalgo-user
>
>