How to read To Workspace block signal value to App Designer ?

7 次查看(过去 30 天)
Hi Everyone
I know I am asking the question for which answer exists somewhere , but I am new to app designer and I have simple requirement.
In mymodel.slx has "To Workspace1" output block.
In GUI callback to read model output , I am reading using get_param.
Signal1 = get_param('mymodel.slx/To Workspace1','VariableName');
As Signal1 is timeseries data. I want to extract last value to use further.
valueout1 = Signal1.Data(end,:); % Reads the value as last timestamp
At above line I am getting error as "Struct contents reference from a non-struct array object."
In command window code line valueout1 = Signal1.Data(end,:);
works as expected.
valueout1 is expected to get numeric value from 0-9. which I will use in switch case to displa\y some string in Text Box.
***********************
Request your inputs . I am trying to get simplest way to read model output and use it to display on App designer GUI.

采纳的回答

Fangjun Jiang
Fangjun Jiang 2024-3-28
编辑:Fangjun Jiang 2024-3-28
Likely it is caused by this
Signal1 = get_param('mymodel.slx/To Workspace1','VariableName') gives you a char array containing the variable name, like
Signal1='MyOutput'.
In the base workspace, variable named 'MyOutput' does exist but you need to do
MyVariable=evalin('base',Signal1);
Then you can do, MyVariable.Data(end,:)
  4 个评论
AK
AK 2024-4-1
编辑:AK 2024-4-1
I was also exploring on same thing..I will take this approach. Thanks for your response.

请先登录,再进行评论。

更多回答(0 个)

产品


版本

R2017b

Community Treasure Hunt

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

Start Hunting!

Translated by