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Invert Matrix, MATLAB vs IDL [message #91895]

Wed, 09 September 2015 08:01

sorice.francesco
Messages: 2
Registered: September 2015

Junior Member

In order to invert a square matrix, why are INVERT (of IDL) and INV (of MATLAB) different?

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Re: Invert Matrix, MATLAB vs IDL [message #91897 is a reply to message #91895]

Wed, 09 September 2015 08:09

chris_torrence@NOSPAM is currently offline

chris_torrence@NOSPAM
Messages: 528
Registered: March 2007

Senior Member

On Wednesday, September 9, 2015 at 9:01:28 AM UTC-6, sorice.f...@gmail.com wrote:
> In order to invert a square matrix, why are INVERT (of IDL) and INV (of MATLAB) different?

How are they different? What data are you using? How are you trying to call the routines? What are you expecting for your results?

Need more info...

-Chris

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Re: Invert Matrix, MATLAB vs IDL [message #91899 is a reply to message #91895]

Wed, 09 September 2015 11:54

Michael Galloy
Messages: 1114
Registered: April 2006

Senior Member

On 9/9/15 9:01 am, sorice.francesco@gmail.com wrote:
> In order to invert a square matrix, why are INVERT (of IDL) and INV
> (of MATLAB) different?
>

There are different techniques to invert a matrix. Try LA_INVERT in IDL
to see if it is the same as MATLAB's INV.

Mike
--
Michael Galloy
www.michaelgalloy.com
Modern IDL: A Guide to IDL Programming (http://modernidl.idldev.com)

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