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rINSTCONTROL/Fit classes/@MyOpticalLorentzianFit/MyOpticalLorentzianFit.m
98de8fa21017TekRSA-Freq-vs-Time

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MyOpticalLorentzianFit.m
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% Lorenzian fit with additional capabilities for the calibration of optical
% linewidth
classdef MyOpticalLorentzianFit < MyLorentzianFit
properties (GetAccess = public, SetAccess = protected)
RefCursors MyCursor
end
methods (Access = public)
function this = MyOpticalLorentzianFit(varargin)
this@MyLorentzianFit(varargin{:});
if ~isempty(this.Axes)
% Add two vertical reference cursors to set the frequency
% scale
xlim = this.Axes.XLim;
x1 = xlim(1)+0.2*(xlim(2)-xlim(1));
x2 = xlim(2)-0.2*(xlim(2)-xlim(1));
this.RefCursors = ...
[MyCursor(this.Axes, x1, 'orientation', 'vertical', ...
'Label','Ref 1', 'Color', [0, 0, 0.6]), ...
MyCursor(this.Axes, x2, 'orientation', 'vertical', ...
'Label','Ref 2', 'Color', [0, 0, 0.6])];
end
end
end
methods (Access = protected)
function createUserParamList(this)
addUserParam(this, 'line_spacing', ...
'title', 'Reference line spacing (MHz)', ...
'editable', 'on', ...
'default', 1);
addUserParam(this, 'line_no', ...
'title', 'Number of reference lines', ...
'editable', 'on', ...
'default', 1);
addUserParam(this, 'lw', ...
'title', 'Linewidth (MHz)', ...
'editable', 'off');
end
function calcUserParams(this)
raw_lw = this.param_vals(2);
if ~isempty(this.RefCursors)
% Get the reference spacing from the position of cursors
xmin = min(this.RangeCursors.value);
xmax = max(this.RangeCursors.value);
ref_spacing = xmax - xmin;
else
% Otherwise the reference spacing is the entire data range
ref_spacing = this.Data.x(1)-this.Data.x(end);
end
this.lw = raw_lw*this.line_spacing*this.line_no/ref_spacing;
end
end
end
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