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Re: adding sparse arrays [message #54303 is a reply to message #54301]

Thu, 07 June 2007 01:36

Paolo Grigis
Messages: 171
Registered: December 2003

Senior Member

nivedita.raghunath@gmail.com wrote:
> Hello all,
>
> How do I add two sparse arrays? The fact that a sparse function to add
> doesn't exist makes me think its pretty simple, but I just can't get
> it. I do not want to use any loops.

Well, it depends where the non-zero, non-diagonal elements of the two
arrays are. If they are located in the same positions, you just need
to add the sa vectors while keeping the ija vectors fixed.

Ciao,
Paolo

>
> Thanks in advance.
>
> -Nivedita
>

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[Message index]

		Re: adding sparse arrays By: nivedita.raghunath on Thu, 07 June 2007 11:13
		Re: adding sparse arrays By: nivedita.raghunath on Thu, 07 June 2007 10:50
		Re: adding sparse arrays By: Vince Hradil on Thu, 07 June 2007 08:23
		Re: adding sparse arrays By: nivedita.raghunath on Thu, 07 June 2007 07:32
		Re: adding sparse arrays By: Paolo Grigis on Thu, 07 June 2007 01:36
		Re: adding sparse arrays By: Gaurav on Thu, 07 June 2007 00:30
		Re: adding sparse arrays By: zhang.yuji on Wed, 06 June 2007 21:29
		Re: adding sparse arrays By: Paolo Grigis on Fri, 08 June 2007 00:42

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