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Re: IDL inverse matrix problem?? [message #90069 is a reply to message #90065]

Thu, 22 January 2015 13:00

amin farhang
Messages: 39
Registered: November 2010

Member

Yes, 1.0d-07 in non-diagonal elements is very big for my work and should be 0.

As in my post, I write the correct inversion of matrix, but IDL return below inverse matrix which has a big deviation from the correct answer and cause divergence in my code.

The IDL inversion:
IDL> print,Am2

1.0e-08 *

0.0045161401 -0.025341567 0.0071848571 -0.051201383 0.061103996
-0.012854534 -0.041131820 -0.014869647 -0.12145509 0.17977632
-0.0012123546 0.022650635 0.010223329 0.094675107 -0.12195776
0.0075355569 0.0047161504 0.010238965 0.073592958 -0.089229866
-0.018737239 -0.014402907 -0.0038020538 -0.064385167 0.089332881

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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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