Plot to axes from a simulink variable

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Nuno Agualusa 2012-1-30

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https://ww2.mathworks.cn/matlabcentral/answers/27453-plot-to-axes-from-a-simulink-variable

Hi,

I'm trying to plot a variable from simulink in a axes GUI, and that what's happening:

I put the simulation running trought GUI with this command: [timeVector,stateVector,outputVector] = sim('Sistema_s_Atraso_SelfTuning',tempo_simulacao);

and when the simulation ends the ouput variable 'simout' to appear in my base worspace, due to that i can't plot the resulta in my GUI axes. I'm using a variable block in simulink, to get all the data to worspace. The only way that i found to get a variable in base workspace, is to run the simulation manualy in simulink.

what can i do to read the output variable and pot in a GUI axes?

Thanks

Nuno

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TAB 2012-1-30

[I'm using a variable block in simulink]. What is "variable block" ?

Have you tried "ToWorkSpace" block?

You are runnung model manually or using "sim()" command, it dosn't make any difference in simulation output.

Nuno Agualusa 2012-1-30

yes, it's a "ToWorkSpace" block, called "simout". i'm using the "sim()" command to start the simulation.

My objective is to get the data to plot in a axes GUI after simulation stops.

Thanks

Nuno

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回答（1 个）

Kaustubha Govind 2012-1-31

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Try

sim('Sistema_s_Atraso_SelfTuning',tempo_simulacao, 'DstWorkspace', 'current');

This ensures that all variables created by Simulink use the current workspace as the destination.

EDIT:

The command needs to be:

opts = simset('DstWorkspace', 'current');
sim('Sistema_s_Atraso_SelfTuning',tempo_simulacao, opts);

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Kaustubha Govind 2012-2-1

You only need EITHER "opts = simset('DstWorkspace', 'current');" OR "simout = evalin('base', 'simout');" - not both. Using the first will cause an error in the second statement, because there is no simout variable created in the base workspace in that case.

Nuno Agualusa 2012-2-1