How to set matrix as variable with SetBlockParameter ?

Hello,

I am a beginner with Simulink, and I was trying to set the OutValues of a Repeating Sequence interpolated Block to a signal I had defined in my code. For some reason, when applying the following with MySignal as a vector of the values as long as the TimeValues vector ,

model = 'MySimulinkFile' ;
simIn = Simulink.SimulationInput(model) ;
simIn = setBlockParameter(simIn,[model '/Repeating Sequence Interpolated'],'OutValues',string(MySignal)) ;

simOut = sim(simIn) ;

I get this error :

Error in 'MySimulinkFile/Repeating Sequence Interpolated': Failed to evaluate mask initialization commands.

Caused by:

• Error using Simulink.Simulation.internal.DesktopSimHelper
• Dimension 1 of the table in block 'MySimulinkFile/Repeating Sequence Interpolated/Lookup' has a size of 1. Each table dimension must have at least 2 elements.

Am I missing something obvious ? Let me know if the full model is needed, but it is as simple as a Repeating Sequence Interpolated block facing a Scope.

Thank you for your time.

Answer 1

[Matthieu]

I finally found the error myself :

A = [1 2 3 4 5] ;

string(A)

ans = 1×5 string array
    "1"    "2"    "3"    "4"    "5"

num2str(A)

ans = '1  2  3  4  5'

whatItNeeds = strcat('[',num2str(A),']')

whatItNeeds = '[1  2  3  4  5]'

The latter variable is what setBlockParameter needs as input to eval it into a matrix. string( ) , that I used in my example, transforms each elements of the array into a str. num2str( ) ransforms the whole array into a single str character, but misses the '[' brackets.

Hope it helps someone else !