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Determining what type of data is in my array

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Kendra Wright
Kendra Wright 2014-11-6
回答： Kendra Wright 2014-11-6
I'm writing a code to deal with a large data set and I'm not so great with Matlab just yet. I've searched, but I'm wondering if there is a function that asks the question "is this a double?" I need to throw out the data points that report NaN. Or is there another way that I can identify those data points?

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回答（3 个）

Sean de Wolski
Sean de Wolski 2014-11-6
x = [1 nan pi]
x2 = x(~isnan(x))
isnan will be your friend.
Orion
Orion 2014-11-6
use isnan
A=[1 2 3 nan 5];
isnan(A)
ans =
0 0 0 1 0
see also isfloat and class
Kendra Wright
Kendra Wright 2014-11-6
Excellent. Thank you.

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