MATLAB Function Reference |
Syntax
Description
TF = isnan(A)
returns an array the same size as A
containing logical true (1
) where the elements of A
are NaN
s and logical false (0
) where they are not. For a complex number z
, isnan(z)
returns 1
if either the real or imaginary part of z
is NaN
, and 0
if both the real and imaginary parts are finite or Inf
.
For any real A
, exactly one of the three quantities isfinite(A)
, isinf(A)
, and isnan(A)
is equal to one.
Examples
a = [-2 -1 0 1 2] isnan(1./a) Warning: Divide by zero. ans = 0 0 0 0 0 isnan(0./a) Warning: Divide by zero. ans = 0 0 1 0 0
See Also
ismethod | isnumeric |
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