Table of Contents
Fit GUI: Report Panel
The report panel displays a summary report of the fit performed, with all important and interesting parameters necessary to make a sound decision about the quality of the fit.

Details of the report
The most important informations are summed up at the very beginning of the report. They include:
- File name of the dataset the fit was performed for.
- Fit function used (both its display name and its Matlab representation).
- Values of the coefficients after the fit.
This is followed by the complete output of the fit function and a summary.
A typical beginning of such a report may look like this:
File: somefile.taz Fit function: "Biexp. decay" c(1)*exp(c(2)*x+c(3))+c(4)*exp(c(5)*x+c(6)) Coefficients: c(1) 0.005679 c(2) 0.000255 c(3) 0.002061 c(4) 0.012412 c(5) -0.040130 c(6) 0.015377 -------------------------------------------------------- Output of fit function: Iteration FuncCount min f(x) Procedure 0 1 0.594052 0 1 0.594052 1 7 0.561290 initial simplex 2 9 0.519123 expand 3 10 0.519123 reflect 4 11 0.519123 reflect 5 13 0.459560 expand 6 14 0.459560 reflect 7 16 0.405543 expand 8 17 0.405543 reflect 9 19 0.351877 expand
Please note: It is very important to have a short look at the very end of the report to see whether the fit function returned happily or whether it exited due to exceeding one of the options. In the latter case, it is highly recommended either to change the initial values for the coefficients or to change the respective option in the parameter window.
An example of such a case is shown below:
749 1193 0.001088 contract inside 750 1195 0.001088 contract inside 751 1197 0.001088 contract inside 752 1199 0.001088 contract outside 753 1200 0.001088 reflect 753 1200 0.001088 reflect SUMMARY Algorithm: Nelder-Mead simplex direct search Number of iterations: 753 Number of function evaluations: 1200 Exiting: Maximum number of function evaluations has been exceeded - increase MaxFunEvals option. Current function value: 0.001088
Here, you clearly see that Matlab suggests to increase the value for MaxFunEvals
. This can be done using the parameters window that you can access by pressing <key>Parameters</key> in the fit panel.
The same fit as shown above now works fine after slightly increasing the value for MaxFunEvals
from “200*numberofvariables” to “300*numberofvariables”, as can be seen from the end of the respective fit report:
827 1333 0.001088 contract inside 828 1335 0.001088 contract inside 829 1337 0.001088 contract inside 830 1339 0.001088 contract inside 830 1339 0.001088 contract inside SUMMARY Algorithm: Nelder-Mead simplex direct search Number of iterations: 830 Number of function evaluations: 1339
Clear
To clear the report window, press the <key>Clear</key> button below.
Save
The report can be saved to a text file via the <key>Save</key> button. This will open the OS-specific file dialogue and lets you choose a (text) file name to save the report to.