setPostSimFcn - Set MATLAB function to run after each simulation - MATLAB (original) (raw)

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Set MATLAB function to run after each simulation

Syntax

Description

simIn = setPostSimFcn([simIn](#mw%5F2801a25c-998a-4f2c-86a1-6f36b62bb14d),[func](#mw%5F1588e927-5ebd-4cad-bea8-655a6fc8bf6a)) configures the post-simulation function associated with the function handlefunc on the Simulink.SimulationInput object simIn. The Simulink.SimulationOutput object is passed as an argument to this function. func is any MATLAB® function and can be used to do the post processing on the output. Post-processed data, must be returned as values in a structure. These values are then packed into the Simulink.SimulationOutput output to replace the usual logged data or add new data to the Simulink.SimulationOutput object.

example

Examples

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This example specifies a post simulation function for a simulation using a Simulink.SimulationInput object.

Create a PostSimFcn that calculates the mean for logged outputs.

function newSimOut = postsim(simOut); newSimOut = simOut newSimOut.mean = mean(simOut.yout(:,1)); end

Create a SimulationInput object for the model vdp.

openExample('simulink_general/VanDerPolOscillatorExample'); simIn = Simulink.SimulationInput('vdp'); simIn = setPostSimFcn(simIn,@(x) postsim(x)); simIn = setModelParameter(simIn,'SaveOutput','on');

Simulate the model.

View the result from the post simulation function.

As a best practice, avoid using ErrorMessage andSimulationMetadata as field names in the function.

Input Arguments

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Simulation inputs and configuration, specified as aSimulink.SimulationOutput object.

Function to run after each simulation completes, specified as a function handle or a function name. The software processes theSimulink.SimulationOutput object. For example:

simIn = simIn.setPostSimFcn(@myPostSim)

wheremyPostSim is a MATLAB function.

% The function can change the contents of the output object before returning to the client. function newSimOut = myPostSim(simOut) % Post process the output for only the relevant values. newSimOut = simOut; newSimOut.meanValue = (simOut.yout(:,1)); end

You can also specify the post-simulation function as a function handle with additional arguments.

% The function can change the contents of the simulation input after parsim runs the simulation. function newSimOut = myPostSim_additionalArgs(simOut,additionalArg1,additionalArg2) newSimOut = simOut; end

The PostSimFcn can also takeSimulink.SimulatinInput object as a second argument. You can have a PostSimFcn with this syntax wherex is the SimulationOutput object and y is the SimulationInput object:

simIn = setPostSimFcn(simIn, @(x,y) myPostSimFcn(x,y));

Output Arguments

Version History

Introduced in R2017a