How to select and order the rows of the full Jacobian to get the reduced one 
should be obvious from the code of the new makeJac function attached to my 
previous post. See lines 94-97 in the code.

-- 
Ray Zimmerman
Senior Research Associate
419A Warren Hall, Cornell University, Ithaca, NY 14853
phone: (607) 255-9645




On Jan 24, 2012, at 3:34 PM, Benjamin Joseph O'Rourke - orourkbj wrote:

> So I used the amended code to get the full Jacobian matrix, but the results 
> were very different from the reduced Jacobian matrix. To get the reduced 
> Jacobian from the full one, I have been removing the rows and columns 
> pertaining to the swing bus and PV-buses...the resulting matrix is very 
> different from the makeJac function results. Any ideas? Am i reducing the 
> matrix incorrectly? Any help would be great. Thanks.
> 
> -- Ben
> 
> From: [email protected] 
> [[email protected]] on behalf of Ray Zimmerman 
> [[email protected]]
> Sent: Tuesday, January 24, 2012 9:46 AM
> To: MATPOWER discussion forum
> Subject: Re: 答复: Jacobian Matrix
> 
> Shiyang is correct. And for convenience, I've modified makeJac() with an 
> optional argument to tell it to return the full Jacobian. The new version 
> (attached) will be included in the next release.
> 

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