MATLAB: Help with “matrix dimensions must agree”.

dimensionserrorif statement

In my code I have an input that says answer = input('Please type "yes" or no".','s'); if answer == 'yes' blah blah else disp('Error, please make sure a file is uploaded.') end

For some reason when I enter "no", there is a problem where it says "Error. Matrix dimensions don't agree." But when i enter "n" it gives me my custom error statement for the else condition.

Best Answer

Change the if condition to:

if strcmp(answer, 'yes')

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MATLAB: Frustrating for what should be simple… What have I done wrong

For strings you shouldn't use == to compare but strcmp for case sensitive comparison or strcmpi for not case sensitive. So this code should work for you:

a = 'no';
while ~strcmpi(a,'yes')
    a = input('Do you like the colour red? (yes/no) ——>  ','s');
    if strcmpi(a,'yes')
        disp('Good its the best colour ever')
    elseif strcmpi(a,'no')
        disp('Whats wrong with you?... TRY AGAIN')
    else
        disp('Thats not an answer, enter y for yes or n for no.')
    end
end

Best Answer

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MATLAB: Frustrating for what should be simple… What have I done wrong

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