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

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Kantosa il 8 Dic 2013
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 :)
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sixwwwwww il 8 Dic 2013
Is it homework?

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### Risposta accettata

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
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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 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 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
##### 1 CommentoMostra -1 commenti meno recentiNascondi -1 commenti meno recenti
Nathan Blais il 3 Ott 2019
I'm guessing K would be the vector we are trying to find the max value for?

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