Use Simulink PreSimFcn to set metadata in a Simulink.S​imulationO​utput object

Is it possible to store variables from a simulation's PreSimFcn in the Simulink.SimulationOutput object's metadata?

I am setting up my Simulink.SimulationInput objects as:

for casenumber = 1:no_of_cases_to_run

    inputs = {'Arg1','Arg2','ArgN','casenumber'};

    simIn(casenumber) = Simulink.SimulationInput(model);

    for iArg = 1:length(BD29Inputs)
        eval(['simIn(casenumber) = simIn(casenumber).setVariable(''',inputs{iArg},''',',inputs{iArg},')'])
    end

    % Use a temporary variable for the SimIn element to avoid runaway memory usage when using a preSimFcn with parsim
    tmpSimIn = simIn(casenumber);

    % Set PreSimFcn to setParSimBaseWorskpaceVariables, which runs the function required to be run in parallel
    simIn(casenumber) = simIn(casenumber).setPreSimFcn(@(x) setParSimBaseWorkspaceVariables(tmpSimIn));
    
end

simOut = parsim(simIn);

My PreSimFcn is

function setParSimBaseWorkspaceVariables(simIn)
% Assign variables required by the IPTOS_BD29_Simulation function
% to the function's workspace
varList = {'Arg1','Arg2','ArgN','casenumber'};
nVarsAssigned = 0;
for iVar = 1:length(simIn.Variables)
    if nVarsAssigned == length(varList)
        break
    elseif ~isempty(find(strcmp(simIn.Variables(iVar).Name,varList), 1))
        eval(strcat(simIn.Variables(iVar).Name,'=simIn.Variables(iVar).Value;'));
        nVarsAssigned = nVarsAssigned + 1;
    end
end

% Run the function required to be run in parallel
funcOutput=func(Arg1,Arg2,ArgN);

% Save funcOut
save(fullfile(iptos_output_file_directory,['Results_',num2str(casenumber),'.mat']),'funcOutput')

% Need help here - how to store 'funcOutput' as metadata in simOut
setUserData(simOut,funcOutput)

end

Answer 1

[Paul]

Hi Afzal,

You can store data into the Simulink.S​imulationO​utput object via the SimPostFcn. Here is an example.