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Re: IDL inverse matrix problem?? [message #90087 is a reply to message #90083]

Fri, 23 January 2015 12:08

wlandsman
Messages: 743
Registered: June 2000

Senior Member

On Friday, January 23, 2015 at 2:56:35 PM UTC-5, Amin Farhang wrote:

The MATLAB result *looks* right because you aren't printing many decimal places.

Try this with the IDL result

IDL> print,CM,format='(5f10.4)'

1.0000 -0.0000 -0.0000 -0.0000 0.0000
-0.0000 1.0000 -0.0000 -0.0000 0.0000
-0.0000 -0.0000 1.0000 -0.0000 0.0000
-0.0000 -0.0000 -0.0000 1.0000 0.0000
-0.0000 -0.0000 -0.0000 -0.0000 1.0000

but both MATLAB and IDL likely store the numbers the same way (IEEE arithmetic) internally.

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[Message index]

		IDL inverse matrix problem?? By: amin farhang on Thu, 22 January 2015 11:24
		Re: IDL inverse matrix problem?? By: wlandsman on Thu, 22 January 2015 12:36
		Re: IDL inverse matrix problem?? By: amin farhang on Thu, 22 January 2015 13:00
		Re: IDL inverse matrix problem?? By: Craig Markwardt on Thu, 22 January 2015 13:40
		Re: IDL inverse matrix problem?? By: amin farhang on Thu, 22 January 2015 22:58
		Re: IDL inverse matrix problem?? By: chris_torrence@NOSPAM on Fri, 23 January 2015 07:25
		Re: IDL inverse matrix problem?? By: Craig Markwardt on Fri, 23 January 2015 10:32
		Re: IDL inverse matrix problem?? By: amin farhang on Fri, 23 January 2015 10:32
		Re: IDL inverse matrix problem?? By: chris_torrence@NOSPAM on Fri, 23 January 2015 10:56
		Re: IDL inverse matrix problem?? By: Craig Markwardt on Fri, 23 January 2015 11:50
		Re: IDL inverse matrix problem?? By: amin farhang on Fri, 23 January 2015 11:56
		Re: IDL inverse matrix problem?? By: chris_torrence@NOSPAM on Fri, 23 January 2015 12:06
		Re: IDL inverse matrix problem?? By: wlandsman on Fri, 23 January 2015 12:08
		Re: IDL inverse matrix problem?? By: amin farhang on Fri, 23 January 2015 12:00
		Re: IDL inverse matrix problem?? By: amin farhang on Fri, 23 January 2015 12:06
		Re: IDL inverse matrix problem?? By: chris_torrence@NOSPAM on Fri, 23 January 2015 12:28
		Re: IDL inverse matrix problem?? By: David Fanning on Fri, 23 January 2015 12:35

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