How Can I establish a raking scale of variables within an array?
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Hi everyone!
This is my array:
a = [0 0 1 3];
I want to define which is the highest value and therefore define a rank in this way:
a_ranking = [4 4 2 1];
where the 4th value is 1 because it was the most chosen.
This is how I found the max values (first and second):
maxH = max(a);
FirstH = find(a == maxH);
secMaxH = max(a(a~= maxH));
SecondH = find(a == secMaxH);
so, I know the in the 4th position there is the highest value and in the third the second one, but how Can I associate the value 1 and 2 respectably to the the third and fourth position of the array.
But I am lost when I have to re-write the array in this way
a_ranking = [4 4 2 1];
I don't know how to reach this point!
Basically, I need to create a array with the same length of the one I am using but indicating the ranking scale of the chosen answer. Is that clear?
Please help me!
1 件のコメント
Andrew Newell
2015 年 3 月 10 日
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Andrew Newell
2015 年 3 月 10 日
編集済み: Andrew Newell
2015 年 3 月 10 日
Your ranking scheme is somewhat unusual because usually the ranking does not have any gaps in it. That would be easy to implement using unique, which not only finds the unique elements and sorts them but returns indices that are, in effect, ranks:
[~,~,a_ranking] = unique(max(a)-a)
a_ranking =
3
3
2
1
Are you sure this isn't what you want?
2 件のコメント
Andrew Newell
2015 年 3 月 10 日
You're welcome. I don't know which weighting scheme would be better - depends on the application. If this solves the problem, can you click on "Accept this answer"?
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