[SOLVED] How to erase zero elements from sparse objects?

Board index

Page 1 of 1 (4 posts)

Tags:

Seb Registered Member Posts 99 Karma 0	[SOLVED] How to erase zero elements from sparse objects? Wed Jan 21, 2009 11:03 am Hi Gael, today I tried to remove elements which are close to zero from a DynamicSparseMatrix object. I can set the appropriate elements to exact zero, but they are not removed from the containers. (the number returned by numZeros stays the same) This technique is used to save computing time during operations and a lot of memory due to round-offs. Is there anything that I have overseen? Thanks Last edited by ggael on Tue Feb 03, 2009 9:10 am, edited 1 time in total.
ggael Moderator Posts 3447 Karma 19 OS	RE: How to erase zero elements from sparse objects? Wed Jan 21, 2009 11:35 am Seb wrote:Hi Gael, today I tried to remove elements which are close to zero from a DynamicSparseMatrix object. I can set the appropriate elements to exact zero, but they are not removed from the containers. (the number returned by numZeros stays the same) This technique is used to save computing time during operations and a lot of memory due to round-offs. Is there anything that I have overseen? Thanks this is on the TODO list... this will be available for both sparse matrix types.
Seb Registered Member Posts 99 Karma 0	RE: How to erase zero elements from sparse objects? Wed Jan 21, 2009 12:27 pm I see. Thanks for pointing this out. - and please give you some time - it does not urge this time
ggael Moderator Posts 3447 Karma 19 OS	RE: How to erase zero elements from sparse objects? Wed Jan 21, 2009 10:32 pm Seb wrote:I see. Thanks for pointing this out. - and please give you some time - it does not urge this time mat.prune(reference_value, epsilon); will remove all coeff such that: coeff ()