MATLAB: Setting Simulink data view tolerance progamatically

inspectorprogramaticallysditolerance

is it possible to to set the tolerance used by the SDI programatically? for example,assuming i have some .mat files called alldata_b, and alldata from separate simulink runs.
runID5 = Simulink.sdi.createRun('alldata_b','file','alldata_b');
runID6 = Simulink.sdi.createRun('alldata',  'file','alldata');
diffSDI_tmp = Simulink.sdi.compareRuns(runID5, runID6);
% Number of comparisons in result
cntSigCmp_tmp = diffSDI_tmp.count;
% Iterate through each result element
for i = 1:cntSigCmp_tmp
   % Get signal result at index i
   sigDiff_tmp = diffSDI_tmp.getResultByIndex(i);
   sigNam_tmp = Simulink.sdi.getSignal(i); % create the object first
   sigNam_tmp = sigNam_tmp.signalLabel; % get the object from the object
   sigDiff_tmp.tol = 1;
end
the line "sigDiff_tmp.tol = 1;" gives the following result:
You cannot set the read-only property 'tol' of DiffSignalResult.
Error in <my_script> (line X)
   sigDiff_tmp.tol = 1;
does this mean the only way to change the tolerance is by editing in the SDI? is there no way around this?

Best Answer

It is currently not possible to tune the signal comparison tolerance programmatically. However, one could specify the absolute and relative tolerance for each signal programmatically.
The following is a code snippet of how this can be achieved.
% Configure model "slexAircraftExample" for logging and simulate
simOut = sim('slexAircraftExample', 'SaveOutput','on', ...
               'SaveFormat', 'StructureWithTime', ...
               'ReturnWorkspaceOutputs', 'on');
% Create a Simulation Data Inspector run
[runID,runIndex,signalIDs] = Simulink.sdi.createRun('My Run', ...
        'base',{'simOut'});
% Get the Simulink.sdi.Run object corresponding to the new run ID
runObj = Simulink.sdi.getRun(runID);
% Get the number of signals in the run
numSignals = runObj.signalCount;
% Get the Simulink.sdi.Signal objects for each signal in the run
% Specify the absolute and relative tolerance for each signal
for i = 1:numSignals
   signalObjs(i) = runObj.getSignal(signalIDs(i));
   signalObjs(i).absTol = 0.5;
   signalObjs(i).relTol = 0.005;
end
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