How do I plot Simulink signal values saved to the MATLAB workspace on an axes?

417 次查看（过去 30 天）
andoni
andoni 2011-5-31
回答： Jasmine Poppick 2024-4-26
I have to plot a signals in a MATLAB gui.
With Simulink I make a simulation and I save the signal in the workspace. I want to plot that signal in a gui axes but I dont know what I have to do.

请先登录，再回答此问题。

采纳的回答

Arnaud Miege
Arnaud Miege 2011-5-31
I assume you run the Simulink model from the MATLAB GUI using the sim command. The data from your Scope will end up in the GUI (caller) workspace rather than the base workspace. So you should be able to plot it using something like:
plot(ScopeData.time, ScopeData.signals.values)
You may need to specify the handle of the axis on which to plot the data.
Also have a look at this technical solution.
HTH,
Arnaud
  5 个评论
显示 3更早的评论
Mohammad Ali Sharifian
Mohammad Ali Sharifian 2024-4-4
Real time? When you run simulink, it executes the signals and blocks, with a 'To workspace' block you can save the real time data to MATLAB workspace and then plot it wherever you want.

请先登录，再进行评论。

更多回答（7 个）

Walter Roberson
Walter Roberson 2011-5-31
Are you using a "To Workspace" block? If so then when you look at the variable, what class() and size() is it? And what kind of plot are you thinking of?
  6 个评论
显示 4更早的评论
Walter Roberson
Walter Roberson 2011-5-31
Though before that you might need to add
ScopeData = evalin('base', ScopeData);
in order to import the data from the base workspace in to the workspace of the current function.

请先登录，再进行评论。

Nuno Agualusa
Nuno Agualusa 2012-1-28
Hi,
I'm facing the same problem, but with a small diference. I'm running the simulink from GUI, but when the simulation finish doesn't apear a variable 'simout' in my base workspace. So i can´t plot the result on 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 solve this situation?
Thank you very much.
Nuno
  2 个评论
Kaustubha Govind
Kaustubha Govind 2012-1-30
How are you running the SIM command? You might want to set 'DstWorkspace' to 'current' to make sure that Simulink uses your GUI function workspace as the destination workspace.
Nuno Agualusa
Nuno Agualusa 2012-1-30
yes, the running command that i used is:
[tempo_simulacao]=evalin('base','tempo_sim');
[timeVector,stateVector,outputVector]=sim('Sistema_s_Atraso_SelfTuning',tempo_simulacao);
The problem is when a simulation ends i can't plot in my GUI axes the result of the simulation..and this action has to be peformed only trought out GUI.

请先登录，再进行评论。

erhan
erhan 2013-11-30
I want set guı axes from scope value. Can you give example ?
yati j
yati j 2016-10-9
编辑：Walter Roberson 2016-10-9
Hello, Could u suggest me any tutorial or any solution to this
  • i have my motor dc to run
  • when the dc motor run/rotate, maybe a graph pop-up which is read my motor speed or relevant to the rotation
  • i dont know the connection btween component
  • i dont know how to draw the simulink
i've read and watched a lot of tutorial.
Thank You.
tran xuanminh
tran xuanminh 2017-7-26
编辑：Walter Roberson 2017-7-26
>>plot(ScopeData.time,ScopeData.signals.values);
>>grid on;
??? >>plot(ScopeData.time,ScopeData.signals.values);
|
Error: Unexpected MATLAB operator.
please coment my erro, thanks
  3 个评论
显示 1更早的评论
Mohammad Ali Sharifian
Mohammad Ali Sharifian 2024-4-4
use this for plotting dimension 1 of signal will work:
plot(ScopeData.time,ScopeData.signals.values(1,:));
or maybe this (I can't remmember):
plot(ScopeData.time,ScopeData.signals.values(:,1));
for dimension 2,3 of signal, simply use 2,3 instead of 1.

请先登录，再进行评论。

Mohammad Ali Sharifian
编辑：Mohammad Ali Sharifian 2024-4-4
If you are working on a simulink file then using m-file codes for plotting is not a good idea. I recommend pasting your m-file codes in simulink at: model properties>callbacks>stop fcn
This way when you run your simulink, the results will be plotted automatically. see plotting codes here:
https://www.mathworks.com/help/matlab/ref/plot.html
Jasmine Poppick
Jasmine Poppick 2024-4-26
Starting in R2024a, you can use App Designer to interactively create an app for a Simulink model, which includes the capability to easily and performantly visualize signal data in the app using the new time scope UI component.
In addition, you can:
  • Add UI components configured specifically to interact with your model, such as a simulation start/stop control and a simulation progress bar.
  • Tune model variables from the app while the simulation runs by connecting UI components to variables.
For more information, see Create App for Simulink Model.

类别

在 Help Center 和 File Exchange 中查找有关 View and Analyze Simulation Results 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by