Finding the corresponding number in a matrix

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jason
jason 2022-9-11
评论： Walter Roberson 2022-9-11
I need to find a number in one column that corresponds with a different column. For example: [1 2 4 6 10 9; 3 5 7 2 8 6], I want the max in column 1, which is ten, I also want to find 8 in the second column.

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回答（2 个）

Image Analyst
Image Analyst 2022-9-11
Ran in:
Did you look up max in the help?
m = [1 2 4 6 10 9; 3 5 7 2 8 6]
m = 2×6
1 2 4 6 10 9 3 5 7 2 8 6
% Find maxes in each of the 2 rows (consisting of 6 columns):
maxesOfRows = max(m, [], 2)
maxesOfRows = 2×1
10 8
% Find maxes in each of the 6 columns (consisting of 2 rows):
maxesOfColumns = max(m, [], 1)
maxesOfColumns = 1×6
3 5 7 6 10 9
Walter Roberson
Walter Roberson 2022-9-11
m = [1 2 4 6 10 9; 3 5 7 2 8 6]
[~, idx] = max(m(1,:));
m(2,idx)

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