Enable Plotting Using the Simulation Data Inspector - MATLAB & Simulink (original) (raw)

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You can use the Simulation Data Inspector (Simulink) to inspect and compare floating-point and fixed-point input and output data logged using the codegen function. At the MATLAB® command line:

1. Create a fixed-point configuration object and configure the test file name.
   fixptcfg = coder.config('fixpt');
   fixptcfg.TestBenchName = 'dti_test';
2. Select to run the test file to verify the generated fixed-point MATLAB code. Log inputs and outputs for comparison plotting and select to use the Simulation Data Inspector to plot the results.
   fixptcfg.TestNumerics = true;
   fixptcfg.LogIOForComparisonPlotting = true;
   fixptcfg.PlotWithSimulationDataInspector = true;
3. Generate fixed-point MATLAB code using codegen.
   codegen -float2fixed fixptcfg -config cfg dti

For an example, see Propose Fixed-Point Data Types Based on Derived Ranges.