|
| From: | Marco Atzeri |
| Subject: | Re: Trouble understanding cidx used in sparse matrices |
| Date: | Thu, 18 Feb 2016 10:45:06 +0100 |
| User-agent: | Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 |
On 18/02/2016 10:05, Shamika Mohanan wrote:
I'm not able to understand the cidx vector given here- https://www.gnu.org/software/octave/doc/interpreter/Storage-of-Sparse-Matrices.html and here- http://arxiv.org/pdf/cs/0604006v1.pdf cidx = [0, 1, 2, 2, 4] I understand why it starts with 0. What does 1, 2, 2, 4 represent? Shamika
The number of elements in the i-th column is given by cidx (i + 1) - cidx (i). 1-0 = 1 element on column 0 2-1 = 1 element on column 1 2-2 = 0 element on column 2 4-2 = 2 elements on column 3
| [Prev in Thread] | Current Thread | [Next in Thread] |