How to select matrix column from minimum row value

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Deon Cooper
Deon Cooper 2020-8-18
编辑： Sara Boznik 2020-8-18
I am currently doing a multi-part task, but the final step involves sorting a matrix I generated to find the lowest value in the row and selecting the whole column:
eg:
distance_to_point = [2, 3, 4, 5; 6.8, 2.9, 6.1, 6.7]
I need to pick the column that has the lowest value in the second row (the distance value), and still identify the point from which the distance is measured, so that I end up with;
new_point = [3; 2.9]
How would I do this?

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采纳的回答

Sindar
Sindar 2020-8-18
distance_to_point = [2, 3, 4, 5; 6.8, 2.9, 6.1, 6.7]
[~,idx] = min(distance_to_point(2,:));
new_point = distance_to_point(:,idx);

更多回答（1 个）

Sara Boznik
Sara Boznik 2020-8-18
编辑：Sara Boznik 2020-8-18
distance_to_point = [2, 3, 4, 5; 6.8, 2.9, 6.1, 6.7]
minima=min(distance_to_point(2,:))
[m,n]=find(distance_to_point==minima)
r=distance_to_point(1,n)
new_point=[minima; r]

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