MATLAB: How to have variable-sized output for Simulink MATLAB-function block

matlab codersimulinkvariable size port

I have a MATLAB function-block in Simulink and I would like to have the output port of the block dynamically sized based on an input parameter. Eg:
function[y] = MATLABblock(u, s)
      y = someCalc(u,s) %%Returns array of size s %%
Is this possible?

Best Answer

I think this should work as long as you can enforce a maximum size for y. Simulink currently does not support dynamic memory allocation, so you must specify a maximum-size for variable-size signals. Please see the section on Variable-Size Data in the documentation to ensure that your output is configured as variable-size.
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