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 using power law in origin . . .		  New Topic  Reply to Topic
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sasidhar.jangam

India
2 Posts
Posted - 05/11/2016 :  12:47:37 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hi guys, I am looking for fitting a curve using power law for the data given in the fig. Can any body help me how to fit a curve using power law.

Dynamics & Adaptive Structures
National Aerospace Laboratories
Bangalore, India

KenLefebvre

USA
66 Posts
Posted - 05/11/2016 :  5:59:51 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Sasidhar-

This depends on the kind of function it is you want to use. I would recommend going to the Fitting Function Organizer in the Tools menu and from there you'll see all of our built-in functions listed with some descriptions and illustrations of the curves and how they are affected by parameter values.

A quick search shows that wehave two power-law related fitting functions built into the software, including-
the Pareto cumululative distribution function in the Power folder, and Herschel Bulkey model in the Rheology functions folder.

If neither of these or any of the other functions included with our software suit your needs, you can define your own function using the Fitting Function Builder which is also in the Tools folder. For an example of how you would convert a conventional function to the format needed for a fitting function, I would recommend reading this short post and the documentation it links to
http://www.originlab.com/forum/topic.asp?TOPIC_ID=20166

And if you have any other questions feel free to write us back!

Ken Lefebvre
Technical Service Engineer
OriginLab
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sasidhar.jangam

India
2 Posts
Posted - 05/13/2016 :  12:27:02 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Ken,

Thq so much, I was looking for this one only. I found the function which I want to use. But How to use any built in function of fitting function organizer to fit a scattered data. Plz help me . . .

Dynamics & Adaptive Structures
National Aerospace Laboratories
Bangalore, India
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