Simulink.sdi.compareRuns - Compare signal data between two simulation runs

Syntax

Description

diff = Simulink.sdi.compareRuns(runID1,runID2) compares the matched signals between two simulation runs and returns their differences in a Simulink.sdi.DiffRunResult object.

Input Arguments

runID1	Run ID, a unique number identifying the first run for comparison.
runID2	Run ID, a unique number identifying the second run for comparison.

Output Arguments

diff	Instance of Simulink.sdi.DiffRunResult that describes the difference between two simulation runs.

Examples

The function Simulink.sdi.compareRuns returns a Simulink.sdi.DiffRunResult object containing the results of the comparison. The Simulink.sdi.DiffRunResult object contains a Simulink.sdi.DiffSignalResult object for each signal comparison between the two simulation runs.

% Configure model "sldemo_f14" for logging and simulate
set_param('sldemo_f14/Pilot','WaveForm','square');
simOut = sim('sldemo_f14', 'SaveOutput','on', ...
                  'SaveFormat', 'StructureWithTime', ...
                  'ReturnWorkspaceOutputs', 'on');

% Create a Simulation Data Inspector run, Simulink.sdi.Run, from simOut in the base workspace
runID1 = Simulink.sdi.createRun('First Run','namevalue',{'simOut'},{simOut});

% Simulate again
set_param('sldemo_f14/Pilot','WaveForm','sawtooth');
simOut = sim('sldemo_f14', 'SaveOutput','on', ...
             'SaveFormat', 'StructureWithTime', ...
             'ReturnWorkspaceOutputs', 'on');
      
% Create another Simulation Data Inspector run
runID2 = Simulink.sdi.createRun('Second Run','namevalue',{'simOut'},{simOut});

% Compare two runs
difference = Simulink.sdi.compareRuns(runID1, runID2);
      
% Number of comparisons in result
numComparisons = difference.count;
      
% Iterate through each result element
for i = 1:numComparisons
   % Get signal result at index i
   signalResult = difference.getResultByIndex(i);
 
   % Get signal IDs for each comparison result
   sig1 = signalResult.signalID1;
   sig2 = signalResult.signalID2;
 
   % Display if signals match or not
   displayStr = 'Signals with IDs %d and %d %s \n';
   if signalResult.match
      fprintf(displayStr, sig1, sig2, 'match');
   else
      fprintf(displayStr, sig1, sig2, 'do not match');
   end
end

See Also

Simulink.sdi.createRun | Simulink.sdi.DiffRunResult

How To

• Record and Inspect Signal Data Programmatically

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