MATLAB: How to solve this error “Operands to the || and && operators must be convertible to logical scalar values.”

logical scalar valuesMATLAB

I want matlab to display the new y values but i keep getting the error.
y = [5000 17000 25000 75000];
if y < 10000
ty = 200;
elseif y > 10000 && y < 20000
ty = (200 + 0.1*(y – 10000));
elseif y > 20000 && y < 50000
ty = (1200 + 0.15*(y – 20000));
elseif y > 50000
ty = (5700 + 0.25*(y – 50000));
end

Best Answer

Your input should be a scalar..i.e y should be a scalar. 
y_val = [5000 17000 25000 75000];
ty = zeros(size(y_val)) ; 
for i = 1:length(y_val)
    y = y_val(i) ; 
if y < 10000
    ty(i) = 200;
elseif y > 10000 && y < 20000
    ty(i) = (200 + 0.1*(y - 10000));
elseif y > 20000 && y < 50000
    ty(i) = (1200 + 0.15*(y - 20000));
elseif y > 50000
    ty(i) = (5700 + 0.25*(y - 50000));
end
end
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