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Re: [TRNSYS-users] negative sign in minimum result of cost function trnopt



Michel,

I'm not sure we understand your question.  2e-14 and -2e-14 differ by only 0.0000000000004 if I counted my zeroes correctly.  And an error with a magnitude of e-14 is not a great choice for an error function.  That falls well within precision of the variables...

 

Jeff

 

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Jeff Thornton President - TESS LLC 3 N. Pinckney Street, Suite 202, Madison WI USA 53703 Office: (608) 274-2577 Fax: (608) 278-1475 www.tess-inc.com E-Mail: thornton@tess-inc.com

On 11/10/2018 4:33 pm, Michel Tamarzians via TRNSYS-users wrote:

Dear all,
 
When doing an optimization one of the minimum results is positive 2.1E-14 but another minimum result is negative 2.1E-14. Can someone please elaborate why the results changes to negative while the minimum found is already much smaller than zero..??
 
Thank you :)
 
Kind regards,
Michel

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