NaN computing std

2011 10 28
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Hi,
I'm attempting to compute standarddev std of a vector, but this vector contains infinite inf values. Essentially, it outputs NaN, when I"m looking for an actual value. Is there any way to ignore any inf values so it can compute an actual value?
Thanks

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Fangjun Jiang
Fangjun Jiang 2011-10-28

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a=[1 2 inf 3 4 inf 5 6];
b=a(isfinite(a))
or b=a(~isinf(a))

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