How to convert NaN value to 'zero' ?

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Ararat Cetinkaya
Ararat Cetinkaya 2020-3-23
评论： Image Analyst 2020-3-23
Hi Everybody,
I have an equation like this "Enthropy = (-p2/b)*log2(p2/b)". p2 values changing according to another equation and When p2 value gets '0', Enthropy value gets to NaN. is there any way to Conver this NaN to '0' value?
For example
when : p2/b = 4
Enthropy = -4*log2(4) = -8
when : p2/b = 0
Enthropy = -0*log2(0) = 0

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回答（1 个）

darova
darova 2020-3-23
Use isnan
Enthropy(isnan(Enthropy)) = 0;
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Image Analyst
Image Analyst 2020-3-23
Yes, of course. Why would it not be?

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