String to a mathematical expression

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Elia
Elia 2013-12-22
评论： Elia 2013-12-23
how can i convert a String to a mathematical expression , that i can use in a function's body ?

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Matt J
Matt J 2013-12-22
If you display the string at the command line, you can then copy/paste it into the function's body.
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Elia
Elia 2013-12-22
i want to get the string from an edit text feld in a gui . it will be a function's body that i want to plot it .
Matt J
Matt J 2013-12-22
编辑：Matt J 2013-12-22
If the string will always be a function of a known letter, e.g. 'x', you can do
theFunc = str2func(['@(x)' theString])

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