Simulink outputs variables but they are not being sent to the workspace.

While using my PC at home I am using 'to workspace' blocks in my diagram with save format array. When I run the simulation i get the following the the command window:

ans = 
  Simulink.SimulationOutput:
                    Vin: [2002x1 double] 
                   Vout: [2002x1 double] 
                      t: [2002x1 double] 
                   tout: [2002x1 double] 

     SimulationMetadata: [1x1 Simulink.SimulationMetadata] 
           ErrorMessage: [0x0 char] 
Undefined function or variable 't'.
Error in P1_2 (line 79)
plot(t,Vin,t,Vout)

It seems to me that simulink is outputting the variables but they are not appearing in the workspace and therefore it thinks they are undefined. I tried running the simulation on a computer at my university and it worked. I tried reinstalling Matlab on my home PC and it still doesnt work. Version 2019.

Answer 1

[David Avila]

If you are running 2019a, the Simulink default settings for the "To Workspace" block have been changed and would need to be set back from being a single simulation output:

https://mycourses.aalto.fi/pluginfile.php/1137968/mod_resource/content/5/Simulink%20settings.pdf

I have to do this every time I make a new model till further notice

Edit: Grammar

[OUFQIR FARID]

thank-u-david...

it-was-very-helpful

[zaman sowmik]

how do you change the settings?

[LUCA LOMBARDO]

THANK YOU SO MUCH

[Filippo Bosi]

Thank you David, very cool!

[Alejandro ROJAS NORMAN]

You are a godsend

[Jonas Blomqvist]

Thank you!

[Hammed Omotoso]

cool

[Vincenzo D'Antuono]

Thanks !

[nina mahali]

thank you, saved me a lot of trouble!!

[Usama Hassan]

thanks man it works

[kumaran kumaran]

Thanks a lot David

[Yue Fan]

Thank you David! It makes sense now that I remember using Matlab+SimuLink this way being a lot easier 10 years ago, which is the last time I did this.

[Akash Ghimire]

Thanks a lot!

[Rick Dodder]

I was having the same problem, and DA's suggestion works when I run my simulation from the Simulink window using the run botton. I have the same problem if I run the simulation from the command line: run 'sim'. Any suggestions?

[samuel brown]

worked for me, MATLAB R2020b. Thanks!

[Ayush Jain]

Thanks man. Worked for me. I was stuck on it for more than 4 hours

[Gavin Moon]

thanks man worked for me when prof was not there

[Vishal Ahuja]

Thanks for sharing

[enrico Rothe]

THANK U DAVID ! u made my day :D

[Erika Nicole Vasquez Estrella]

you literally saved my project too :)

[Habby G]

Thank you for sharing this valuable information.

[Kevin Hobbs]

This does not work for me in 2022a. The fix the guide mentions is enabled by default and does not get rid of the ".out" in the diagram blocks.

[Andrew Melean]

Thanks David. Worked for me too.

[Hamoon maleki]

thanks david fixed my issue aswell 2021b

[Khaled Hassan]

Thank you very much, I was loosing my mind. This was very helpful

[Elmer]

Muchas gracias...

Answer 2

[Rostislav Teryaev]

First of all, you have to assign a structure Simulink.SimulationOutput to some variable

temp = Simulink.SimulationOutput;

Next, you need to access field t or Vin of this structure

temp.t
temp.Vin

To use plot you want this

temp = Simulink.SimulationOutput;
plot(temp.t, temp.Vin, temp.t, temp.Vout)

[zaman sowmik]

how do you change the settings?

Answer 3

[mete teke]

Thank a lot...