MATLAB: Operands to the || and && operators must be convertible to logical scalar values error

operands to the || and && operators must be convertible to logical scalar values error

I get an operators error… Not sure why. Can you help out?
Here is the code:
while count<=i
     mfg=G(count)
     if mfg == 27 && mfgdate2 >= 1946 && mfgdate<= 1974 || mfg == 27 && mfgdate>= 1983 && mfgdate<= 1988     
        MfgScore(count,:)=3;
    end
    count=count+1;
end

Best Answer

Either mfgdate or mfgdate2 are not scalar. You probably need to index them with count
It is suspicious that you use mfgdate2 only once in the expression
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