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ptc-47493531-Visitor
1-Visitor
October 21, 2012
Question

Fitting data

  • October 21, 2012
  • 5 replies
  • 4282 views

Hi. I need help for fitting data. I am looking a function which can fit a kind of tailed function. see attached the data that I want to fit.

5 replies

V
ValeryOchkov24-Ruby IV
24-Ruby IV
October 21, 2012

May be the attach help you!

V
ViktorKorobov1-Visitor
1-Visitor
October 21, 2012

May be so.

Viktor

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RichardJ19-Tanzanite
19-Tanzanite
October 21, 2012

What's the purpose behind fitting the data? Do you just want interpolated values? Do you want to understand something about the physics, chemistry, whatever, regarding this data?

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ptc-47493531-VisitorAuthor
1-Visitor
October 22, 2012

ok I will explain.

when we are going to the left to the right, I want to have the area of second peak which is the signature of one chemical compound. I have many voltammogrammes were this peak increase with the concentration of the analyte. so I want to fit the data with a kind of two gaussian function. when I use a sum of two error functions the fitting is not good.

I hope that now you understand my problem

P
ptc-47493531-VisitorAuthor
1-Visitor
October 22, 2012

ok I will explain.

when we are going to the left to the right, I want to have the area of second peak which is the signature of one chemical compound. I have many voltammogrammes were this peak increase with the concentration of the analyte. so I want to fit the data with a kind of two gaussian function. when I use a sum of two error functions the fitting is not good.

I hope that now you understand my problem.

P
ptc-47493531-VisitorAuthor
1-Visitor
October 22, 2012

also, the function should have an electrochemical meaning. thank you

R
RichardJ19-Tanzanite
19-Tanzanite
October 22, 2012

also, the function should have an electrochemical meaning.

That's why I asked. I'm not an electrochimist thoiugh, so you will have to provide us with a function that describes what is happening. Given the expected form of the function, we can show you how to fit it.

P
ptc-47493531-VisitorAuthor
1-Visitor
October 22, 2012

we want to used two gaussian functions.

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