nnz matlab
时间: 2023-10-16 15:08:04 浏览: 49
nnz是MATLAB中的一个函数,用于返回矩阵中非零元素的个数。在默认情况下,nnz与nzmax的值相同,即非零元素数等于为非零元素分配的存储位置数。但是,如果将某些矩阵元素的值更改为零,nnz的值会发生改变,但nzmax的值不会改变。需要注意的是,如果线性索引超过2^48-1(即当前矩阵中允许的元素数上限),使用线性索引在大型稀疏矩阵中访问或指定元素将失败。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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