Having no luck with the suggestions I dare to submit it is a bug hoping to get a response from Staff. Afterall the produced message is unclear: what does it mean to 'Use []' in the code that MATLAB generates.?
reshape() error in the function created by matlabFunction()
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matlabFunction() has generated for me AmplAndDers() to be used in fminunc(). The very first objective function evaluation fails:
Error using reshape
Number of elements must not change. Use [] as one of the size inputs to automatically calculate the appropriate size for that dimension.
Error in AmplAndDers (line 93)
Hess = reshape([-t2.*t3.*t4. ... .*(3.0./4.0)],[4,4]);
The signature of the function is:
function [Ampl,GradA,Hess] = AmplAndDers(C1_0,C2_0,R1_0,R2_0,w,x1,x2,x3,x4)
I call it with a w being an array. Two other outputs are returned correctly. I do not understand what does the above suggestion mean:
Use [] as one of the size inputs to automatically calculate the appropriate size for that dimension.
If I manually change the above reshape() call to end with:
...*(3.0./4.0)],[4,4,length(w)]);
the program runs OK.
How can avoid the manual intervention?
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KSSV
2021년 8월 21일
Read the documentation of reshape and understand it. The error is clear, you are trying to create extra elements than present in the array while reshaping.
Example:
A = rand(1,25) ;
B = reshae(A,5,5) ; % 5*5 = 25, no error as same elements present
C = reshape(A,6,5) ; % 6*5 = 30, error as A as 30 elements only.
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