Store variable to file in Simulink

Dear MATLAB community,

I am trying to store an array of vector variable to a file in Simulink from a MATLAB function block.

I have tried

(1)'save('savevec.dat', 'vec');'

but function 'save' is not suppoorted as coder.extrinsic.

I have also tried

(2)'matlab.io.saveVariablesToScript('savevec.m', 'vec')'

but Simulink does not seem to be able to detect variable 'vec' in case (2).

I am reluctant to use Simulink's sink 'to file' block, as vec suppose to be internal calculations.

Thanks in advance for your help.

Regards.

Answer 1

[Loong]

It turns out that what I needed are dlmwrite, dlmread..

Answer 2

[Sean de Wolski]

Why not make vec a second output of the function&block and then use the "To File" block?

[Loong]

Hi, Thanks for the reply. My vec is approximately 100k array in size. I made 'vec' persistent for each Simulink cycle. When I try to make 'vec' as additional output, I can no longer make 'vec' persistent and I will get errors like "Undefined function or variable 'vec'. The first assignment to a local variable determines its class." My objective is to store 'vec' either to a file or to a workspace, preferably called within the MATLAB function block run by Simulink. Any idea? Thanks.