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GUI text box - Replacing a word entered in the text box.

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Zach
Zach 2011-5-31
I have a textbox in my GUI right now and I want the students to input something of the for "10*x(n)" , but for the code to work it has to be "10*x(1)". Is there a way to replace the incoming x(n) with x(1) ?

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Matt Fig
Matt Fig 2011-5-31
str = '10*x(n)'
str2 = strrep(str,'n','1')
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Zach
Zach 2011-5-31
so if I'm getting it from my text box would it be
str=get(handles.textbox,'string')
str2=strrep(str,'n','1')

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