MATLAB: Am I getting the error message “??? Assignment has more non-singleton rhs dimensions than non-singleton subscripts”

Question

I do not understand the following error message:

Error Messages: ??? Assignment has more non-singleton rhs dimensions than non-singleton subscripts

Answer 1

This error is a result of incorrect indexing of multidimensional arrays.

For example, you can reproduce the same error message to execute the following command.

>> a = zeros(3,3,3); % difine 3x3x3 size variable 

>> a(3,3,2) = randn(1,2); % assign 1x2 size values

Assignment has more non-singleton rhs dimensions than non-singleton subscripts

To workaround, please check the size of variable you would like to assign.