Array size from Stateflow is different after simulation is complete after sending to workspace.
3 views (last 30 days)
Show older comments
I'm generating a signal that is output from a Stateflow chart in Simulink R2016a. The size of the variable that is ultimately output in Stateflow is a 6 x 5 array. However, when I send it to the base workspace using the To Workspace Simulink block, I get a much larger array once the simulation is complete. Specifically, when I send it to a 2D array, it was instead a 91056 x 5 2D array mostly full of zeros.
Out of curiosity I changed it to output 2D arrays as 3D arrays and it was a 6 x 5 x 15176 array and only the last 2D array had non-zero columns.
This indicates to me I had made an oversight in my Stateflow chart and I'm too lazy to go through the work to debug and correct it. Instead, I would rather preserve the very last 2D array since I will need only that for later calculations later during the simulation (although right now I am only interested in this first half). Is there an easy way to preserve only the last array using Simulink blocks once the first half of the simulation is over so I can use that during the second half, or will I need to come up with a clever Matlab user-define function block?
Addendum I just tried to use a simpler Matlab function block that runs
x_out = x_in(x_in~=0);
and then I put the signal through a reshape block to make the 30 x 1 array a 6 x 5.
The error I get is
'x_out' is inferred as a variable-size matrix, but its size is specified as inherited or fixed. Verify 'x_out' is defined in terms of non-tunable parameters, or select the 'Variable Size' check box and specify the upper bounds in the Size box.
I get this same error whether I just use Matlab block with or without the reshape.
I've had similar errors trying to debug my code, and I had set the size of the outputs. But I tried to do that here and the code wouldn't compile still.
0 Comments
Answers (0)
See Also
Categories
Find more on Simulink Functions in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!