Help with workspace data extraction shortcut

I am trying to extract data from the workspace from various possible locations.

X.output.name.param1(:,end)

X.output.name.param2(:,end)

:

X.output.name.paramN(:,end)

If possible, I would like to try access it via a named parameter, like below.

line 1: param = 'param2';

line 2: y = X.output.name.(param);

Doing this partly appears to work. I can see my data as a 25x3 matrix.

But how do i home in on the 3rd 'end' column by editing line 2, and not line 1?

Regards, Dave

Answer 1

[Amith]

Hi Dave,

1. From Workspace Block:

• Use the From Workspace block in your Simulink model. This block reads data from a workspace and provides it as a signal or a nonvirtual bus at the block’s output1.
• To read more about "From Workspace" block, click the link below - https://www.mathworks.com/help/simulink/slref/fromworkspace.html
• Specify the data you want to load using the Data parameter. You can use a MATLAB expression (e.g., a variable name) that evaluates to data in a format supported by the block.
• Connect the output of the From Workspace block to your desired location in your model.

2. Accessing Logged Data:

• If you’re logging data using a To Workspace block, you can access the logged data using the variable name specified in the Variable name parameter of the block2.
• Use a dot notation with the variable name to access specific columns or elements.For example:

 % Assuming 'simout' contains your logged data
 y = simout.param2(:, end); % Access the 3rd 'end' column

3. Model Workspace

• Alternatively you could also create a Simulink.ModelWorkspace object to interact with the model workspace of your Simulink model.
• This allows you to store and retrieve parameters or variables associated with the model.
• To learn more about this click the link below - https://www.mathworks.com/help/simulink/slref/simulink.modelworkspace.html

Hope this helps!