matlab isnan
时间: 2023-08-23 13:04:35 浏览: 127
在MATLAB中,`isnan`是一个函数,用于判断矩阵或向量中的每个元素是否为NaN(Not a Number)。它返回一个与输入矩阵或向量相同大小的逻辑矩阵,其中对应位置为1表示NaN,为0表示非NaN。下面是一个示例:
```matlab
A = [1, NaN, 3, NaN];
result = isnan(A);
```
在这个示例中,`result`将会是一个逻辑向量 `[0, 1, 0, 1]`,表示A中的第2个和第4个元素是NaN。
相关问题
matlab ISNAN
isnan函数是MATLAB中的一个函数,用于判断一个数组中的元素是否为NaN(非数值)。它返回一个与输入数组相同维度的逻辑数组,其中元素为NaN的位置上返回逻辑值1(真),其他位置返回逻辑值0(假)。使用isnan函数可以方便地判断并去除数组中的NaN值。例如,对于一个数组A,我们可以使用isnan(A)来得到一个逻辑数组,其中元素为NaN的位置上是真,其他位置上是假。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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matlab isnan函数用法
MATLAB的`isnan`函数用于判断给定输入是否为NaN(Not a Number)。NaN是一种特殊的数值,表示不是数字或不存在的数值。`isnan`函数返回一个逻辑数组,其中每个元素都对应于输入数组的一个元素,如果该元素为NaN,则对应位置上为1,否则为0。
以下是`isnan`函数的使用示例:
```matlab
A = [1 2 NaN 4 5 NaN];
B = isnan(A); % B = [0 0 1 0 0 1]
```
在此示例中,输入数组A包含6个元素,其中2个元素为NaN。`isnan(A)`返回大小相同的逻辑数组B,其中第3个和第6个元素为1,表示A中第3个和第6个元素为NaN,其他元素为0。
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