baseline_optimizer class

The baseline_optimizer class is one customization of the general purpose icosfit_optimizer class. An understanding of the basics of icosfit_optimizer is a prerequisite for working with baseline_optimizer.

Features:

• Create new baseline configurations and compare results
• Analyze scaling and rescale baseline parameters
• Analyze baseline etalons and add etalons to the baseline

%%
OptB6 = baseline_optimizer( ...
  'mnemonic', 'OptB6', 'save_var', 'OptB6', ...
  'cfg_ref', 'icosfit.R1ss.9l', ...
  'PTEFile', 'PTE_nu0.txt', ...
  'nscans', 50 ...
  );
%%
OptB6.new_polynomial(5);

The first section creates the OptB6 baseline_optimizer object. The second creates a new baseline file with a 4th order polynomial baseline (5 parameters), then runs icosfit using that baseline file. The icosfit configuration file specified by the cfg_ref parameter is used as a template with specific parameters altered. BaselineFile is implicitly altered (since this is baseline_optimizer), but PTEFile is explicitly altered in the first section's setup.

The nscans parameter selects a set of non-contiguous scans from the cfg_ref file's ScanNumRange for the test case. This is useful when environmental changes may have caused significant changes in the baseline throughout the run.

After the first fitting run is completed, an icosfit_optimizer GUI appears to illustrate the fit results. Many operations can be accomplished using the GUI. The key operations are:

• Analyze Parameter Scaling
• Rescale Baseline Parameters
• Analyze Baseline Etalons
• Add a Baseline Etalon