Why do I receive the error message "Arrays have incompatible sizes for this operation"?

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Tuan sharifah nur fatieha binti Tuan Mohamad
评论： Dyuman Joshi 2025-3-1
Why does this error occur?
Arrays have incompatible sizes for this operation.
Error in fitting_method_iefa (line 238)
Different2 = sum((y-Convolution).^2);
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Thiripura Sundari
Thiripura Sundari 2025-3-1
移动：Dyuman Joshi 2025-3-1
Arrays have incompatible sizes for this operation.
Error in guna1 (line 32)
RHS = (theta(2:end-1,j)/dt) + Ec*((diff(u(:,j))./dy).^2) - Q*0.5*(theta(3:end,j)-theta(2:end-1,j))
give answer
Dyuman Joshi
Dyuman Joshi 2025-3-1
@Thiripura Sundari, it would be much better if you ask a new question of your own and provide relevant information to solve the issue.
Also check this (self-explanatory) thread - TUTORIAL: how to ask a question (on Answers) and get a fast answer

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Sourabh
Sourabh 2024-10-21
编辑：MathWorks Support Team 2024-10-21
The following error in MATLAB occurs when you try to perform operations (such as subtraction) on two arrays that have different sizes or dimensions that are not compatible with each other.
Arrays have incompatible sizes for this operation
You can understand array size compatibility from the following link:
https://www.mathworks.com/help/matlab/matlab_prog/compatible-array-sizes-for-basic-operations.html
Try using the "size" function to find out the dimensions of an array.
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Walter Roberson
Walter Roberson 2025-2-18
@SergeyLA
Thank you for reporting this bug in hex2num. The intended internal behaviour was to remove all columns past the 16th, but instead the code was removing only the last column when there were more than 16.

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