How do I extract non zero minimum value and its index from a specific row??

for ex, C=[0,10,8,9,7;10,0,10,5,6;8,10,0,8,9;9,5,8,0,6;7,6,9,6,0]; i need min value from row 1 greater than zero. How do i get it?

Réponses (1)

Guillaume
Guillaume le 20 Avr 2018
Modifié(e) : Guillaume le 20 Avr 2018

If you want the minimum value greater than 1 from all the rows, then simply replace the values below 1 by inf and take the minimum:

C = [0,10,8,9,7;10,0,10,5,6;8,10,0,8,9;9,5,8,0,6;7,6,9,6,0];
tempC = C;
tempC(C < 1) = inf;
[minofrow, whichcolumn] = min(tempC, [], 2)

4 commentaires

how do i operate it on any specific value??

What does operate it on any specific value mean? The minimum of a specific value is that value itself!

I mean extracting non zero row minimum from any randow row

Have you tried the code? It gives you the minimum greater (or equal( than one for each row. You can then use basic indexing to get the row that interest you.

Note that if you want the non-zero minimum instead of minimum greater than 1, then use

tempC(C == 0) = inf;

instead.

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le 23 Avr 2018

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