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chintanshah
Germany
3 Posts |
Posted - 02/05/2015 : 10:00:57 AM
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Hello, I am building a new cosine fitting function. i.e. A-B*cos((2*pi*(x+x0))/180). After fitting the data points with this function, I can get amplitude B and the offset A. Now to the post fitting, I want to have simple mathematical calculations on the derived parameters. i.e. p_DR=((B/(M*A))-(p_RR*f_RR))/(1-f_RR), where M, p_RR and f_RR are the constants, but it has an error. At this point I do not know How can I include the error of M, p_RR and f_RR in the post processing of the function. Please let me know how to include errors to get final value of p_DR?
![](http://www.originlab.com/ftp/forum_and_kbase/Images/pars.PNG)
![](http://www.originlab.com/ftp/forum_and_kbase/Images/constants.PNG)
![](http://www.originlab.com/ftp/forum_and_kbase/Images/derived parameter equation.PNG) Thank you very much. Regards,
chintan |
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lkb0221
China
497 Posts |
Posted - 02/05/2015 : 10:04:52 AM
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Move your M into parameter part and fix it. |
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chintanshah
Germany
3 Posts |
Posted - 02/05/2015 : 10:16:09 AM
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quote: Originally posted by lkb0221
Move your M into parameter part and fix it.
Thank you lkb0221. Fixing the value is the same as the constant. The value of M is for an example 0.4+/-0.02, the same for the values of p_RR and f_RR. The question is, How to take the error of 0.02 of M and others, as error propagation to derived parameter?
chintan |
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lkb0221
China
497 Posts |
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chintanshah
Germany
3 Posts |
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