find minimum non-zero

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find minimum non-zero

 hi, look that: a=  1   0   0   8   7   0   0   2  0   0   0   0   0   0   0   0  2   0   0   6   0   0   1   0 i want find vector with minimun non-zero and: 1 (minimun non-zero in  rows n.1)         0 ( don't find minimum non-zero in  rows n.2)         2 (minimun non-zero  in  rows n.3) it's possible to code it avoing loop? -- Sent from: https://octave.1599824.n4.nabble.com/Octave-General-f1599825.html
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Re: find minimum non-zero

 On 11/12/19 8:45 AM, shivax via Help list for GNU Octave wrote: > hi, look that: > a= >  1   0   0   8   7   0   0   2 >  0   0   0   0   0   0   0   0 >  2   0   0   6   0   0   1   0 > > i want find vector with minimun non-zero > > > and: 1 (minimun non-zero in  rows n.1) >         0 ( don't find minimum non-zero in  rows n.2) >         2 (minimun non-zero  in  rows n.3) > > it's possible to code it avoing loop? > Does this work for your problem?   a = [...      1   0   0   8   7   0   0   2; ...      0   0   0   0   0   0   0   0; ...      2   0   0   6   0   0   1   0];   a(a == 0) = inf;   b = min (a, [], 2);   b(isinf (b)) = 0 I think the answer for the third row should be "1", right? HTH, Kai
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Re: find minimum non-zero

 skilo1056 correct.. thank you -- Sent from: https://octave.1599824.n4.nabble.com/Octave-General-f1599825.html
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Re: find minimum non-zero

 Sorry I committed an inaccuracy i want to find the first number (non zero) in each row  example:      1   0   0   8   7   0   0   2      0   0   0   0   0   0   0   0      2   0   0   6   0   0   1   0 ans: 1 0 2 another example:      0   0   0   8   7   0   0   2      0   0  3   0   0   0   0   0      5   0   0   6   0   0   1   0 ans: 8 3 5   -- Sent from: https://octave.1599824.n4.nabble.com/Octave-General-f1599825.html
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Re: find minimum non-zero

 Am 14. November 2019 um 16:48 Uhr schrieb "gigiolone123 via Help list for GNU Octave": > Sorry > I committed an inaccuracy > > i want to find the first number (non zero) in each row > > >  example: > >      1   0   0   8   7   0   0   2 >      0   0   0   0   0   0   0   0 >      2   0   0   6   0   0   1   0 > > ans: 1 0 2 > > another example: > >      0   0   0   8   7   0   0   2 >      0   0  3   0   0   0   0   0 >      5   0   0   6   0   0   1   0 > > ans: 8 3 5 > There are probably several possible solutions. One involves meshgrid, logical indexing and min. But you should do your homework on your own. Markus