Can't delete MATLAB Function Input in Simulink?

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TimonD 2019-5-31

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https://ww2.mathworks.cn/matlabcentral/answers/464944-can-t-delete-matlab-function-input-in-simulink

评论： Shivam Sardana 2019-6-3

Hello,

In my Simulink model i have a MATLAB Function that used to have three inputs. Now i don't need one of these inputs anymore and (of course) decided to delete it. As soon as i do so i can't run my Simulink model anymore even tho the variable is not even used by the functions code! The error I was getting was:

"Errors occurred during parsing of MATLAB function ..... "

I've rewrittten the code but still the same error appeared.

Now even tho I didn't try anything diferen't i keep getting the Error

"Simulink cannot determine sizes and/or types of the outputs for block 'lca_simulink/Lane Changing Assist/MATLAB Function' due to errors in the block body, or limitations of the underlying analysis. The errors might be inaccurate. Fix the indicated errors, or explicitly specify sizes and/or types for all block outputs."

I tried defining the Output-type in the Model Explorer but that didn't change anything. Is this just a random error or did I do anything wrong?

This is the function and "xObjMemoryOld" is the variable i want to delete. As you can see it's not in the code... if i just leave it in there and leave it unconnected my Model runs perfectly? isn't this weird?

function [RearClearMemory, RearClearSmooth]= SmoothenRearClearSignal(RearClearMemory,RearClear,xObjMemoryOld)
RearClearRelevant = RearClearMemory(~isnan(RearClearMemory));
if length(RearClearMemory) > length(RearClearRelevant)
    RearClearMemory(length(RearClearRelevant) + 1) = RearClear;
else
    RearClearMemory(1:end-1) = RearClearMemory(2:end);
    RearClearMemory(end) = RearClear;
end
RearClearRelevant = RearClearMemory(~isnan(RearClearMemory)); % so last value is also used
RearClearSmooth = median(RearClearRelevant(:));
if RearClearSmooth == 0.5
    RearClearSmooth = 0;
end
if length(RearClearRelevant) <= 5
    RearClearSmooth = 1;
end