I WANT TO SOLVE THIS PROBLEM

I want select max value from very row

like this until 364

Answer 1

[Walter Roberson]

[maxvals, maxidx] = max(YourMatrix, [], 2);

Now maxidx will be a vector of column numbers, one per row.

[abduall hassn]

Thanx brother but my problem i have index 364 from very index i want to select max value between five rows

Example

Index 1 the max value in colum 4

Index 2 the max value in colum 4

Index 3 the max value in colum 4

Index 4 the max value in colum 4

Index 5 the max value in colum 5

Index 6 the max value in colum 5

like this

[Walter Roberson]

You have 364 values. You cannot break that up into groups of 5 without having a group of 4 left over.

If you had 365 values or some other multiple of 5, then

max( reshape(maxidx, 5, []) )

[abduall hassn]

Thanx alot brother

But i want to ask. Why u give 2?

And think u again

[maxvals, maxidx] = max(YourMatrix, [], 2);

[Walter Roberson]

The 2 refers to dimension #2, the columns . The above functions equivalently to

for K = 1 : size(YourMatrix,1)
  [maxvals(K,1), maxidx(K,1)] = max(YourMatrix(K,:),[]);
end

If you left out the 2, then the default would be to work along the first non-singular dimension, like

for K = 1 : size(YourMatrix,2)
  [maxvals(1,K), maxidx(1,K)] = max(YourMatrix(:,K),[]);
end