ischar
Determine if input is character array
Syntax
Description
Examples
Determine If Array Is Character Array
Create different arrays, and then determine if they are character arrays.
Test a character vector.
chr = 'Mary Jones'
chr = 'Mary Jones'
tf = ischar(chr)
tf = logical
1
Test a numeric array.
X = rand(1,3)
X = 1×3
0.8147 0.9058 0.1270
tf = ischar(X)
tf = logical
0
Test a string array.
str = ["Smith","Chung","Morales"; ... "Sanchez","Peterson","Adams"]
str = 2x3 string
"Smith" "Chung" "Morales"
"Sanchez" "Peterson" "Adams"
tf = ischar(str)
tf = logical
0
str
is a string array, not a character array, so ischar
returns 0
.
Input Arguments
A
— Input array
scalar | vector | matrix | multidimensional array
Input array, specified as a scalar, vector, matrix, or multidimensional
array. A
can be any data type.
Extended Capabilities
C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.
Thread-Based Environment
Run code in the background using MATLAB® backgroundPool
or accelerate code with Parallel Computing Toolbox™ ThreadPool
.
This function fully supports thread-based environments. For more information, see Run MATLAB Functions in Thread-Based Environment.
GPU Arrays
Accelerate code by running on a graphics processing unit (GPU) using Parallel Computing Toolbox™.
The ischar
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).
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).
Version History
Introduced before R2006a
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