将稀疏矩阵另存为行，列和值向量 [英] Save sparse matrix as row, column, and value vectors

问题描述

我在mat文件中保存了一个稀疏矩阵.我想用C ++处理它，但我的库希望将稀疏矩阵表示为三个向量:colIdx(非零列索引的向量)，rowIdx(非零行索引的向量)和val(值向量).

I have a sparse matrix saved in a mat file. I want to process it in C++ but my library expects the sparse matrix to be represented as three vectors: colIdx (vector of indices of nonzero columns), rowIdx (vector of indices of nonzero rows), and val (vector of values).

我应该怎么做?有内置命令执行类似操作吗?

How should I go about this? Are there any built-in commands doing similar operations?

推荐答案

是您要寻找的

[rowIdx colIdx val] = find( myHugeSparseMatrix );

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