Find all unique values and replace it with new values
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I have a vector with values
v = [0.23; 0.1; 0.33; 0.23 ; 0.33; 0.6; 0.6; 0.4];
I would like to find the unique values and replace the vector with numbers from 1, like
newV = [1; 2; 3; 1 ; 3; 4; 4; 5];
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採用された回答
Walter Roberson
2022 年 6 月 6 日
findgroups()
But since you are using floating point numbers you really should use the third output of uniquetol() instead
4 件のコメント
Image Analyst
2022 年 6 月 7 日
@Elysi Cochin I'm pretty sure you've seen the FAQ on this before but here it is again:
その他の回答 (2 件)
KSSV
2022 年 6 月 6 日
v = [0.23; 0.1; 0.33; 0.23 ; 0.33; 0.6; 0.6; 0.4];
[c,ia,newV] = unique(v,'stable') ;
newV
0 件のコメント
Image Analyst
2022 年 6 月 6 日
Will this do:
v = [0.23; 0.1; 0.33; 0.23 ; 0.33; 0.6; 0.6; 0.4];
% newV = [1; 2; 3; 1 ; 3; 4; 4; 5];
[g, Tid] = findgroups(v)
I know it doesn't match your desired but it's easy and maybe you don't need that exact order. If you need that exact order, can you explain why you need that order? (And don't jsut say I need it because I need it.)
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