Thu, 02/20/2014 - 10:41 am
I am trying to use fVoigtFit on some data and cannot make sense of the returned fit coefficients and how to properly choose initial guesses. I have read notes TN026 but I still cannot see the relationship between the initial fit parameter guesses and the output fit coefficients. I have attached an example in case it helps.
The initial guesses were:
w0=0
w1=1.5
w2=2
w3=0
w4=2
Thanks,
Leo
Graph5.pdf
February 20, 2014 at 11:10 am - Permalink
February 20, 2014 at 01:19 pm - Permalink
The picture of your data looks like it has some baseline and small superposed peaks off to the left as well as the big main peak, so maybe Multipeak Fit will be of more help than just to make sense of the Voigt coefficients.
John Weeks
WaveMetrics, Inc.
support@wavemetrics.com
February 21, 2014 at 09:37 am - Permalink