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qingkite

UK
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Posted - 06/18/2007 :  12:49:38 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hi, I wanna fit a curve with userdefined expression. I know how to use the NLCT function. The problem is I can not input my expression in Origin. There is an erf function in the expression, but when i compile the expression, it says error with the erf function.

Is erf function involved in Origin, or how can i do it? (I tried to input the eqution of erf function, but it tells me there is no int function...)

Many many thanks :-)

Jingjing

larry_lan

China
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Posted - 06/18/2007 :  11:07:24 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Maybe this links can help:

http://www.originlab.com/forum/topic.asp?TOPIC_ID=5432
http://www.originlab.com/forum/topic.asp?TOPIC_ID=2423
http://www.originlab.com/forum/topic.asp?TOPIC_ID=5597
http://www.originlab.com/forum/topic.asp?TOPIC_ID=5437

If not, please provide more details. Such as your Origin version, OS, detail steps, function form, ... etc.

Thanks

Larry
OriginLab Technical Services
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