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jennifernielsen

Canada
1 Posts
Posted - 07/18/2013 :  08:16:41 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. and Service Release (Select Help-->About Origin): 9.0
Operating System: 64 bit

I am new with using Origin. I was graphing data in Excel and adding trend lines to data. Could someone help me with how to do this in Origin? Typically I have been fitting my data using log or power.

Thanks,
Jennifer

Shirley_GZ

China
Posts
Posted - 07/19/2013 :  10:33:37 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi jennifernielsen,

Are you going to fit your data? Origin offers built-in Logarithm and power function.

About how to do nonlinear curve fitting in Origin, please refer to this tutorial and this video.

Shirley

Originlab Technical Service Team
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Kevinalvin

Malaysia
3 Posts
Posted - 07/23/2013 :  05:59:29 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Shirley_GZ,

Can u help me how to fitting dat by Varshni equation?

E(T)=E(0)-(AT^2/(T+B))
ET is dependence variable
T is indepedence variable
A and B is fitting parameter?
Thank in advance..
I,m originPro8 User,,




Kevin
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Shirley_GZ

China
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Posted - 07/29/2013 :  03:29:03 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Kevinalvin,

Try to create a user-defined function and then use it to do fitting.

Learn how to Create User-Defined Fitting Function in Origin.

Best regards,
Shirley

Originlab Technical Service Team
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craigdesign

United Kingdom
1 Posts
Posted - 07/29/2013 :  05:43:48 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
This pdf tutorial can help you in graphing data.

http://www.originlab.com/pdfs/Tutorials.pdf
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