从 uBlas 压缩矩阵中删除一行？

发布于 2024-11-18 20:24:02 字数 590 浏览 2 评论 0原文

我想知道从 uBlas 的压缩矩阵中删除一行的最佳方法是什么？我想知道是否有某种方法可以获取向量内的压缩列数据？我正在查看此页面 http://netlib.org/linalg/html_templates/node92.html 并且找不到如何访问这些元素。

我的矩阵声明如下：

  ublas::compressed_matrix
     <
     double,
     ublas::column_major,
     0,
     ublas::unbounded_array<int>,
     ublas::unbounded_array<double> >

我的最终目标是使用此方法删除所有零行。

编辑： 我怀疑解决方案将涉及内部更改 ublas::compressed_matrix 结构。我认为可以安全地假设非零条目的数量约为 1k。我希望调用该方法来删除一行，也许 20 次。

原文

I was wondering what was the best way to remove a row from uBlas's compressed matrix? I was wondering if there was some way to get a hold of the compressed column data inside the vector? I am looking at this page http://netlib.org/linalg/html_templates/node92.html and can't find how to access those elements.

My matrix is declared as follows:

  ublas::compressed_matrix
     <
     double,
     ublas::column_major,
     0,
     ublas::unbounded_array<int>,
     ublas::unbounded_array<double> >

My eventual goal is to use this method to remove all zero rows.

EDIT:
I suspect the solution will involve changing the ublas::compressed_matrix structure internally. I think its safe to assume that the number of non-zero entries will be on the order of 1k. I hope to call the method to remove a row, maybe, 20 times.

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