comp.lang.idl-pvwave archive: archive » failed matrix inversion returns input-- interesting

Home » Public Forums » archive » failed matrix inversion returns input-- interesting

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

failed matrix inversion returns input-- interesting [message #49310]

Thu, 13 July 2006 16:14

MarioIncandenza
Messages: 231
Registered: February 2005

Senior Member

Can someone explain this behavior?
IDL> testm=[[0,0,0,0],[0,1,0,0],[0,0,1,0],[0,0,0,1]]
IDL> testmi=invert(testm,status)
IDL> print,status; 0=success, 1=fail, 2=pivot used
1
IDL> print,testmi
0.00000 0.00000 0.00000 0.00000
0.00000 1.00000 0.00000 0.00000
0.00000 0.00000 1.00000 0.00000
0.00000 0.00000 0.00000 1.00000

Is there any reason in creation why IDL simply copies the input into
the output if it cannot do the inversion? That seems, well, malevolent,
unless I'm missing something.

Report message to a moderator

[Message index]

failed matrix inversion returns input-- interesting

By: MarioIncandenza on Thu, 13 July 2006 16:14

Previous Topic:	How to do RGB to CMYK conversion for PS output?
Next Topic:	Re: IDL 6.3 for Mac OS X on Intel Now Available

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sat Oct 11 16:11:42 PDT 2025

Total time taken to generate the page: 1.91468 seconds