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Re: diagonal dominant [message #83046 is a reply to message #82949]

Wed, 30 January 2013 09:00

Brian Daniel
Messages: 80
Registered: July 2009

Member

On Wednesday, January 30, 2013 9:26:11 AM UTC-5, Gompie wrote:
> Hi,
>
> I have a matrix( 256,256) and I want to convert it into diagonal dominant form.
>
> What is the best way to do it. Does IDL have function to do it?
>
> Gompie

Well, if you're building a matrix by hand, try DIAG_MATRIX. You can put values along the diagonal, or offset them by a set number of rows. For example:

print,diag_matrix([3,4,5],1)
0 3 0 0
0 0 4 0
0 0 0 5
0 0 0 0

-Brian

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[Message index]

		diagonal dominant By: Gompie on Wed, 30 January 2013 06:26
		Re: diagonal dominant By: Mats Löfdahl on Thu, 31 January 2013 05:26
		Re: diagonal dominant By: Gompie on Thu, 31 January 2013 05:05
		Re: diagonal dominant By: Mats Löfdahl on Thu, 31 January 2013 00:09
		Re: diagonal dominant By: Gompie on Wed, 30 January 2013 22:33
		Re: diagonal dominant By: Mats Löfdahl on Wed, 30 January 2013 15:13
		Re: diagonal dominant By: Gompie on Wed, 30 January 2013 19:36
		Re: diagonal dominant By: Gompie on Wed, 30 January 2013 09:21
		Re: diagonal dominant By: bstecklu on Wed, 30 January 2013 09:06
		Re: diagonal dominant By: Brian Daniel on Wed, 30 January 2013 09:00

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