Get Interpreted Function error line from sim command

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Lore DT 2019-9-30

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https://ww2.mathworks.cn/matlabcentral/answers/482924-get-interpreted-function-error-line-from-sim-command

回答： Lore DT 2019-10-1

Hi! I’ve already searched for possible solutions to my problem, but I didn’t find one that seems to fit to my situation. It’s quite complex, I try to explain it in a more general way.

I have a Simulink scheme with 2 blocks in it, let’s call them BLOCK_A and BLOCK_B. These 2 blocks are Interpreted Matlab Functions: BLOCK_A communicate its outputs to BLOCK_B and they respectively contain 2 very long functions that must be evaluated (always the same) for each (discrete) time of simulation.

It’s convenient for me to run this Simulink scheme from a script, with the sim command. Here is what happens: when I run it, the scheme runs correctly without any problem for a while (approximately for the first 5 seconds of the whole simulation time). After that, probably due to a modification of vectors' dimensions inside the function of BLOCK_B, it returns to me an error message.

And here is the problem I’d like to solve: the line returned by this error message is NOT the line in which the error really occurs (i.e. inside the function evaluated by BLOCK_B), but it’s always the line of the script file in which I use the sim command. So: how can I get what is the number of line inside the function (of BLOCK_B) in which the errror occurs, after some iterations?

Hope I explained the question in a comprehensible way. Thanks in advance for your help.

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Walter Roberson 2019-10-1

Interpreted MATLAB Function Blocks only have one line of MATLAB code.

Lore DT 2019-10-1

Sorry, can you explain me what do you mean with "one line of MATLAB code"? I use the Interpreted MATLAB Function block inside Simulink and this block calls for a MATLAB function. This function has many lines of code in it, used to obtain some results.

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