0 个投票

[Max,index]=max(array,[ ],2)..... Iam using this syntax to find the maximum value of every column but in case of two equal maximum values it returns the first one... how can I solve this?! Thanks

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Walter Roberson
Walter Roberson 2020-2-10
You have not defined what outcome you would prefer.
Steven Lord
Steven Lord 2020-2-10
That sounds like it's working as it should. From the documentation "If the largest element occurs more than once, then I contains the index to the first occurrence of the value."
What did you expect it to do instead?
Marco Nashaat
Marco Nashaat 2020-2-10
sorry for your trouble....but the problem I'm working on is to find the saddle points of a matrix and now I'm trying this ...
[row,col]=size(matrix);
for I=1:row
for j=1:col
if matrix (I,j)==max(matrix, I)&&matrix (I,j)==min(matrix, j)
indices=[i j;]:
else
indices=[ ]
end
end
end
would it work ...and I could use some help with the syntax!!
Mohymen Kushal
Mohymen Kushal 2020-10-26
if A is a matrix, then max(A,[ ],2) is a column vector containing the maximum value of each row . What is this '2' for ? can anybody explain please. Thanks.
the cyclist
the cyclist 2020-10-29
As clearly stated in the documentation for max, that "2" indicates the matrix dimension along which to take the maximum.

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the cyclist
the cyclist 2020-2-10

0 个投票

This code will return the row and column indices where the entry is equal to the column's maximum.
[rowIdx,colIdx] = find(A==max(A))

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