MATLAB: MATLAB SWITCH not recognizing string from Excel spread sheet

Question

Hi everyone,

I've been getting input from an Excel file and I want to use a SWITCH expression based on the selections. MATLAB gives the following error: SWITCH expression must be a scalar or string constant. My code looks like this:

a = excelInput;
switch a
    case 'velocity'
        % do something
    case 'time'
        % do something else
end

Answer 1

Try

switch a{1}