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Re: matrix division [message #60540 is a reply to message #60444]

Fri, 23 May 2008 11:02

Vince Hradil
Messages: 574
Registered: December 1999

Senior Member

On May 23, 12:23 pm, Jean H <jghas...@DELTHIS.ucalgary.ANDTHIS.ca>
wrote:
> Vince Hradil wrote:
>> On May 23, 11:41 am, Jean H <jghas...@DELTHIS.ucalgary.ANDTHIS.ca>
>> wrote:
>>>> > c = a/(b + replacement_value*(abs(b) lt epsilon))
>>>> Ooooo, good one, Jean.
>>> on the other hand, doing this, when 'b' is 0, would lead to 'c = a /
>>> replacement_value'... so in 'c', you would get different results as 'a'
>>> varies..
>
>>> Jean
>
>> Ummm... isn't that the idea?
>
> or is it to flag the bad entries? ... though having "inf" would do so
> very well:) ... nevermind then (that Friday rain is playing on my brain.. :)
>
> Jean

I see what you mean. Yes, there are two issues here - do you want to
(quietly) avoid the divide-by-zero or do you want to flag them. Two
issues and two different solutions.

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[Message index]

		matrix division By: adam.ranson on Wed, 21 May 2008 11:29
		Re: matrix division By: Kenneth P. Bowman on Fri, 23 May 2008 13:41
		Re: matrix division By: David Fanning on Fri, 23 May 2008 12:18
		Re: matrix division By: Vince Hradil on Fri, 23 May 2008 11:02
		Re: matrix division By: Jean H. on Fri, 23 May 2008 10:23
		Re: matrix division By: Vince Hradil on Fri, 23 May 2008 10:06
		Re: matrix division By: Jean H. on Fri, 23 May 2008 09:41
		Re: matrix division By: edward.s.meinel@aero. on Fri, 23 May 2008 08:13
		Re: matrix division By: adam.ranson on Fri, 23 May 2008 01:47
		Re: matrix division By: Kenneth P. Bowman on Thu, 22 May 2008 13:15
		Re: matrix division By: Jean H. on Thu, 22 May 2008 12:28
		Re: matrix division By: David Fanning on Thu, 22 May 2008 10:45
		Re: matrix division By: Rich Younger on Thu, 22 May 2008 10:22
		Re: matrix division By: Rich Younger on Thu, 22 May 2008 10:13
		Re: matrix division By: edward.s.meinel@aero. on Thu, 22 May 2008 09:47
		Re: matrix division By: Paul Van Delst[1] on Thu, 22 May 2008 09:19
		Re: matrix division By: David Fanning on Thu, 22 May 2008 08:48

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