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 Fit implicit functions
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fliozzi

Argentina
6 Posts

Posted - 05/22/2012 :  04:54:23 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
v8.6Sr2. 32 bits trial mode
Operating System: Windows 7 x64

Hello, is there any way to adjust implicit functions with origin? For example the full diode equation I=Io*(exp((V-I*Rs)/(n*Vt))-1).
For fit this ecuation, i use Mathematica V8. I suppose a function F(V,I)=0; in this case F(V,I)=Io*(exp((V-I*Rs)/(n*Vt))-1)-I. Now I create the trio of experimental values (xi, yi, 0) and fit the function of two variables F(V,I) for the parameters Io, Rs and n.
How I can do this in origin?

Please fit implicit function is importat in ingeniering. Please incorporate it into future releases. But broken promises. Do it. Lambert W funtion too.
Thanks.

I`am electronic engineering student.

easwar

USA
1853 Posts

Posted - 05/22/2012 :  12:05:54 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

Fitting with implicit functions using orthogonal distance regression will be available in the next version.

Easwar
OriginLab
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fliozzi

Argentina
6 Posts

Posted - 05/22/2012 :  12:24:27 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Thanks!
Greetings.

I`am electronic engineering student.
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