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Determine NaT (Not-a-Time) elements


tf = isnat(A)



tf = isnat(A) returns an array the same size as the datetime array, A, containing logical 1 (true) where the elements of A are Not-a-Time (NaTs) and logical 0 (false) where they are not. NaT represents a datetime that is undefined.


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Create a datetime array from numeric values containing NaN.

d = datetime(2014,[1 2 NaN 4],1)
d = 1x4 datetime array
   01-Jan-2014   01-Feb-2014   NaT           01-Apr-2014

Determine if any elements of d are NaT (Not-a-Time).

ans = 1x4 logical array

   0   0   1   0

Input Arguments

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Input array, specified as a datetime array.

Extended Capabilities

See Also


Introduced in R2014b