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Re: inverse gradient [message #64022 is a reply to message #63980]

Tue, 02 December 2008 10:59

pgrigis
Messages: 436
Registered: September 2007

Senior Member

erano wrote:
>>
>> But you haven't really described how you got dX and dY and
>> what is the potential....
>>
>
> Well, dX and dY are based on other parameters gradient. I based on
> MATLAB code. In MATLAB, we can use "\" for doing Ax=Y: x=A\Y, where A
> is M*N matrix. I can attach the code.

My question was what are dX and dY? What is the potential?

In IDL you can do x=A#invert(Y) that I guess is similar
to what matlab does (modulo transposition of the arrays).

But if A is large and sparse, then use the sparse methods suggested.

Paolo

>
> Eran

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[Message index]

		inverse gradient By: erano on Wed, 26 November 2008 02:10
		Re: inverse gradient By: pgrigis on Tue, 02 December 2008 10:59
		Re: inverse gradient By: erano on Tue, 02 December 2008 11:42
		Re: inverse gradient By: erano on Tue, 02 December 2008 10:50
		Re: inverse gradient By: pgrigis on Tue, 02 December 2008 09:20
		Re: inverse gradient By: erano on Tue, 02 December 2008 09:04
		Re: inverse gradient By: pgrigis on Tue, 02 December 2008 07:45
		Re: inverse gradient By: erano on Tue, 02 December 2008 07:12
		Re: inverse gradient By: pgrigis on Tue, 02 December 2008 06:45
		Re: inverse gradient By: erano on Tue, 02 December 2008 01:27
		Re: inverse gradient By: pgrigis on Fri, 28 November 2008 08:31
		Re: inverse gradient By: pgrigis on Fri, 28 November 2008 08:18
		Re: inverse gradient By: pgrigis on Fri, 28 November 2008 08:14
		Re: inverse gradient By: pgrigis on Fri, 28 November 2008 08:10
		Re: inverse gradient By: Jeremy Bailin on Fri, 28 November 2008 05:27
		Re: inverse gradient By: erano on Fri, 28 November 2008 01:31
		Re: inverse gradient By: Jeremy Bailin on Thu, 27 November 2008 06:24
		Re: inverse gradient By: pgrigis on Tue, 02 December 2008 14:44
		Re: inverse gradient By: erano on Tue, 09 December 2008 00:36
		Re: inverse gradient By: erano on Wed, 24 December 2008 01:55

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