anynan - Determine if any array element is NaN - MATLAB (original) (raw)

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Determine if any array element is NaN

Since R2022a

Syntax

Description

`TF` = anynan([A](#mw%5Fb3e8dab7-6c6c-4c8c-9135-e1772f6e1977)) returns logical 1 (true) if at least one element ofA is NaN. It returns 0 (false) if no element is NaN.

If A contains complex numbers, anynan(A) returns1 if at least one element has a real or imaginary part that isNaN.

example

Examples

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Create a row vector A. Determine if at least one element of A is NaN.

anynan returns logical 1 (true) because at least one element of A is NaN.

Create another row vector B. Determine if at least one element of B is NaN.

B = 1×4

-Inf -Inf Inf Inf

anynan returns logical 0 (false) because no element of B is NaN.

Create a matrix and determine if at least one of its elements is NaN.

A = [0 0 3;0 0 3;0 0 NaN]

A = 3×3

 0     0     3
 0     0     3
 0     0   NaN

Create a 3-D array and determine if at least one of its elements is NaN.

A(:,:,1) = [2 1; 3 5]; A(:,:,2) = [0 0; 0 Inf]; A(:,:,3) = [-2 9; 4 1]

A = A(:,:,1) =

 2     1
 3     5

A(:,:,2) =

 0     0
 0   Inf

A(:,:,3) =

-2     9
 4     1

Input Arguments

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Input array, specified as a scalar, vector, matrix, or multidimensional array.

Example: [pi NaN Inf -Inf]

Extended Capabilities

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Theanynan function fully supports tall arrays. For more information, see Tall Arrays.

The anynan function fully supports GPU arrays. To run the function on a GPU, specify the input data as a gpuArray (Parallel Computing Toolbox). For more information, see Run MATLAB Functions on a GPU (Parallel Computing Toolbox).

Version History

Introduced in R2022a