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Find the maximum value and its location from a matrix using two nested loops

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Hi,
Right now I have this matrix K
K =
-3 -8 6 -3 -8 6 9 24 -18
-5 10 -9 -5 10 -9 15 -30 27
8 4 9 8 4 9 -24 -12 -27
-9 -24 18 12 32 -24 3 8 -6
-15 30 -27 20 -40 36 5 -10 9
24 12 27 -32 -16 -36 -8 -4 -9
9 24 -18 -15 -40 30 0 0 0
15 -30 27 -25 50 -45 0 0 0
-24 -12 -27 40 20 45 0 0 0
I wonder how I can use two nested loops to find the maximum number and its location from this matrix.
It would be great if anyone can help me with this
Thank you very much :)

Risposta accettata

sixwwwwww
sixwwwwww il 8 Dic 2013
Modificato: sixwwwwww il 8 Dic 2013
you can do it as follow:
MaxValue = -Inf;
row = 0;
column = 0;
for i = 1:size(K, 1)
for j = 1:size(K, 2)
if K(i, j) > MaxValue
MaxValue = K(i, j);
row = i;
column = j;
end
end
end
  6 Commenti
Image Analyst
Image Analyst il 8 Dic 2013
But you didn't ask for other ways - you rigidly specified the way. The other, more MATLAB-ish way would be to use the max() function. Look at the two arguments it returns. You might also find ind2sub() helpful,
Alexandra Vaupotic
Alexandra Vaupotic il 8 Feb 2021
Modificato: Alexandra Vaupotic il 8 Feb 2021
How could you make this a function with an output of the Max value?

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Più risposte (1)

Khalid Mojallid
Khalid Mojallid il 26 Mar 2019
MaxValue = -Inf;
row = 0;
column = 0;
for i = 1:size(K, 1)
for j = 1:size(K, 2)
if K(i, j) > MaxValue
MaxValue = K(i, j);
row = i;
column = j;
end
end
end

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