how can I generate indices for submatrix extraction in simulink?

Hi,

I want to do the following function in simulink without using embedded matlab:

function index=index_gen(i1,i2)

if(i1<=i2)
   index=i1:i2;
else
   index=i2:i1;
end
end

is there a simulink block or is it possible to create a block which can generate a vector of indices starting from to integer values? because I need to generate dynamically a vector of indices to select a submatrix from a matrix thank you

Answer 1

[Prateekshya]

Hello Simone,

Creating a dynamic vector of indices in Simulink without using Embedded MATLAB (now called MATLAB Function block) can be a bit challenging, as Simulink is primarily designed for signal processing and control systems rather than dynamic array operations. However, you can achieve this by using a combination of Simulink blocks and logic as follows.

• Inputs: You need two integer inputs, i1 and i2.
• Comparison Logic: Use a Relational Operator block to compare i1 and i2.
• Switch Logic: Use Switch blocks to handle the logic for generating indices based on the comparison.
• For Iterator Subsystem: Use a For Iterator Subsystem to generate the sequence of indices.
• Output: Collect the indices into a vector.

I hope this helps!