Rank: 40549 based on downloads (last 30 days) and 0 files submitted

Ashish Raj

E-mail: Contact Author
Company/University: Cornell U

Personal Profile:
Professional Interests:: MRI, image reconstructions, image processing

Files

Comments and Ratings by Ashish		1 - 1 of 1
Updated	File	Comments	Rating
14 Sep 2009	Null space of a sparse matrix calculates null space and range of a rectangular sparse matrix Author: Pawel Kowal	Hi Pawel, thanks for sharing your code for finding nullspace of large matrices. This appears very useful, and I am considering using it for my research in medical image reconstruction. There is just a small problem, with which I was hoping you could help us. We are interested in "almost-rank-deficient" matrices rather than strictly rank-deficient. So we want to be able to supply a tolerance parameter which says, "consider all eigenvectors with eigenvalues smaller than this tolerance to belong to the nullspace". My question is: is it possible to add this feature to your code? I would really appreciate your help! sincerely, Ashish Raj

MATLAB Central Terms of Use

NOTICE: Any content you submit to MATLAB Central, including personal information, is not subject to the protections which may be afforded information collected under other sections of The MathWorks, Inc. Web site. You are entirely responsible for all content that you upload, post, e-mail, transmit or otherwise make available via MATLAB Central. The MathWorks does not control the content posted by visitors to MATLAB Central and, does not guarantee the accuracy, integrity, or quality of such content. Under no circumstances will The MathWorks be liable in any way for any content not authored by The MathWorks, or any loss or damage of any kind incurred as a result of the use of any content posted, e-mailed, transmitted or otherwise made available via MATLAB Central. Read the complete Terms prior to use.