matlab ~ischar
时间: 2023-09-04 12:06:53 浏览: 162
`~ischar` is a logical operator in MATLAB which checks if the input is not a character array. It returns a logical value of `true` if the input is not a character array and `false` if the input is a character array.
For example, if we have a variable `str` and we want to check if it is not a character array, we can use the `~ischar` operator as follows:
```
str = 123;
if ~ischar(str)
disp('The input is not a character array');
end
```
This code will print the message "The input is not a character array" because `str` is not a character array.
相关问题
matlab ~ischar用法
`~ischar` 是用于判断一个变量是否不是字符类型的函数。在MATLAB中,`ischar()`是一个内置的函数,用于判断一个变量是否是字符类型。因此,`~ischar()`则表示不是字符类型。
例如,以下代码将创建一个矩阵和一个字符串变量,并使用`~ischar`函数判断它们是否是字符类型:
```
A = [1 2 3; 4 5 6; 7 8 9]; % 创建一个矩阵
str = 'Hello World'; % 创建一个字符串变量
if ~ischar(A)
disp('A 不是字符类型');
end
if ~ischar(str)
disp('str 不是字符类型');
end
```
输出结果为:
```
A 不是字符类型
```
因为`A`是一个矩阵,不是字符类型,而`str`是一个字符串变量,是字符类型。
matlab中ischar函数
ischar()是Matlab中的一个函数,它用于判断输入的变量是否为字符数组。如果是字符数组,则返回1,否则返回0。例如,如果输入的变量为字符串'hello',则ischar('hello')的返回值为1;如果输入的变量为数字9,则ischar(9)的返回值为0。该函数的语法格式为:
ischar(A)
其中,A可以是任何变量或表达式,如字符串、矩阵、向量等。如果A是字符数组,则ischar(A)返回1,否则返回0。
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