Entering a formula by user

2012 7 25
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Is there a function which allows me to ask for a formula, while the prgram is beeing used, and subsequently use that formula?

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Nirmal
Nirmal 2012-7-25

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Have a look at eval: http://www.mathworks.com/help/techdoc/ref/eval.html
aMatrix = magic(5);
expression = input('Enter the name of a matrix: ','s');
if (exist(expression,'var'))
mesh(eval(expression))
end

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