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gdroogmans

Belgium
6 Posts
Posted - 05/19/2004 :  04:48:15 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
I get the follwoing error message, when fitting my data with a user-defined function:
"There is(are) zero or small y value(s) and this is not consistent with the chosen weighting method".
This occurred with statistical weighting, instrumental or using anarbitrary data set. The fitting procedure worked OK if I use no weighting. So probably it is not a problem of the fit function.
Any advise to prevent this error is welcome.

Mike

USA
357 Posts
Posted - 05/19/2004 :  08:40:48 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi gdroogmans,

This is most likely a "divide by zero" problem. See this forum post for more information: http://www.originlab.com/forum/topic.asp?TOPIC_ID=2951

Note that weighting methods are outlined in the Origin Help file topic Before you Start: The Chi-Square Minimization.

Mike
OriginLab
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gdroogmans

Belgium
6 Posts
Posted - 06/01/2004 :  03:40:09 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
This was indeed the case.
Thanks for your help
Guy
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