Getting the confidence interval of a multipeak fitting
I am using version 6.37 of Igor and I want to know how do I calculate the confidence interval of the results of the multipeak fitting. I am using this tool to deconvolute the peaks that make up a complex Raman band. I've been reading the manual but I still can't find how to do this. Thanks for any help.
Execute this command to read a bit from the Curve Fitting help:
DisplayHelpTopic "Calculating Confidence Intervals After the Fit"
Using Multipeak Fit 2, you will need to compute the confidence intervals yourself after the fit is done. The reported standard deviations will be the input to the computations.
February 21, 2019 at 12:49 pm - Permalink
In reply to Execute this command to read… by johnweeks
crystalreidThanks for the comment, but it didn't work for me because the steps in that tutorial are for curve fitting. I did multipeak fitting not curve fitting.
February 21, 2019 at 05:04 pm - Permalink
Multipeak Fitting is just a complicated curve fit. Indeed, you need to know where to find the coefficients and the sigmas. You will find inside the data folder root:Packages:MultiPeakFit2: a data folder for each fitted set. The name is MPF_SetFolder_n where n is the set number. Each peak has a coefficient wave, "Peak n Coefs" where n is the peak number. There are also sigma waves, w_sigma_n, where n is the peak number.
February 21, 2019 at 05:13 pm - Permalink
Thanks but I found an easier way to do it by using the Chi square value and the number of fitted points.
February 21, 2019 at 06:54 pm - Permalink
Would you be willing to post something about what you did for the benefit of others who might see this post? I'm wondering if I misunderstood your original question.
February 22, 2019 at 09:43 am - Permalink