Getting Top 'k' most negative value indices in matrix
in [Matlab]
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From: Wayne King on 6 Jul 2010 13:19 "Rahul Singhal" <rsinghalomatic(a)gmail.com> wrote in message <i0vn5o$sqt$1(a)fred.mathworks.com>... > Hi All, > I have a matrix which contains some negative values. I want to get the indices of top 'k' most negative values in matrix. > > How can i do that? > > Thanks and Regards > Rahul Hi Rahul, have you read the documentation for sort? reset(RandStream.getDefaultStream); A = randn(10,10); [B,I] = sort(A(:)); A(I(1:10)) %smallest ten elements I(1:10) are the indices Is this what you're getting at? Wayne
From: Rahul Singhal on 6 Jul 2010 20:40
Thanks Wayne. Yes, my problem is solved by sort technique u mentioned below. Thanks once again... Rahul "Wayne King" <wmkingty(a)gmail.com> wrote in message <i0voib$1do$1(a)fred.mathworks.com>... > "Rahul Singhal" <rsinghalomatic(a)gmail.com> wrote in message <i0vn5o$sqt$1(a)fred.mathworks.com>... > > Hi All, > > I have a matrix which contains some negative values. I want to get the indices of top 'k' most negative values in matrix. > > > > How can i do that? > > > > Thanks and Regards > > Rahul > > Hi Rahul, have you read the documentation for sort? > > reset(RandStream.getDefaultStream); > A = randn(10,10); > [B,I] = sort(A(:)); > A(I(1:10)) %smallest ten elements I(1:10) are the indices > > Is this what you're getting at? > > Wayne |