Error using tf using input from GUI

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llca llasd
llca llasd 2017-12-28
评论： llca llasd 2017-12-29
Hi,
I having issue on using tf function in my program, i was hope to take input from GUI to form a transfer function by using below code, but everytime when i run it, it show "Error using tf (line 248)"
a = get (handles.input1,'string');
b = get (handles.input2,'string');
fs=tf(a,b);

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Walter Roberson
Walter Roberson 2017-12-28
I suspect you need
a = str2num( get(handles.input1,'string') );
b = str2num( get(handles.input2,'string') );
fs = tf(a, b);
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