matlab in ischar determine whether the input array of characters

Source: https:? //Ww2.mathworks.cn/help/matlab/ref/ischar.html searchHighlight = ischar & s_tid = doc_srchtitle

grammar

tf = ischar(A)

Explanation

Examples

If the Acharacter array, then the logical value returned ( ); logical value otherwise ( ).tf = ischar(A)1true0false

Examples

Collapse

Determine whether the array is an array of characters

Try in MATLAB

Create a number of different array, and then determine whether they are an array of characters.

A character test vectors.

chr = 'Mary Jones'

chr = 
'Mary Jones'

tf = ischar (CHR)

tf = logical
   1

Test an array of numbers.

X = rand(1,3)

X = 1×3

    0.8147    0.9058    0.1270

tf = ischar(X)

tf = logical
   0

Test string array. R2017a from the start, you can create strings using double quotes.

str = ["Smith","Chung","Morales"; ...
       "Sanchez","Peterson","Adams"]

str = 2x3 string array
    "Smith"      "Chung"       "Morales"
    "Sanchez"    "Peterson"    "Adams"

tf = ischar(str)

tf = logical
   0

strIs a string array instead of a character array, therefore ischarreturn 0.

Input parameters

Collapse

`A`- input array
scalar | vector | matrix | multidimensional arrays

Input array, is designated as a scalar, vector, matrix or multidimensional array. AIt can be any data type.

extensions

C / C ++ code generation
using MATLAB® Coder ™ C code generated C ++ code.

GPU array
by using Parallel Computing Toolbox ™ running on a graphics processing unit (GPU) to accelerate code execution.

This function fully supports GPU array. For more information, see the Run MATLAB Functions ON A GPU (Parallel Computing Toolbox).

Distributed arrays
using Parallel Computing Toolbox ™ to partition large arrays in combination with the memory cluster.

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