ismatrix

Determine whether input is matrix

Syntax

ismatrix(V)


Description

ismatrix(V) returns logical 1 (true) if size(V) returns [m n] with nonnegative integer values m and n, and logical 0 (false) otherwise.

Examples

Determine Matrix

M = rand(3,3,3);
ismatrix(M)

ans = logical
   0

N = M(:,:);
ismatrix(N)

ans = logical
   1

Extended Capabilities

Tall Arrays

Calculate with arrays that have more rows than fit in memory.

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

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

GPU Arrays

Accelerate code by running on a graphics processing unit (GPU) using Parallel Computing Toolbox™.

This function fully supports GPU arrays. For more information, see Run MATLAB Functions on a GPU (Parallel Computing Toolbox).

Distributed Arrays

Partition large arrays across the combined memory of your cluster using Parallel Computing Toolbox™.

This function fully supports distributed arrays. For more information, see Run MATLAB Functions with Distributed Arrays (Parallel Computing Toolbox).