I have a vector/ or it could be array :
我有一个矢量/或它可能是数组：
A = [1,2,3,4,5,1,2,3,4,5,1,2,3]
I want to extract existing different values/elements from this vector without repeating:
我想从这个向量中提取现有的不同值/元素而不重复：
1,2,3,4,5
B= [1,2,3,4,5]
How can I extract it ?
我该如何提取它？
I would appreciate for any help please
如果您有任何帮助，我将不胜感激
2 个解决方案
#1
2
Try this,
尝试这个，
A = [1,2,3,4,5,1,2,3,4,5,1,2,3]
y = unique(A)
B = unique(A) returns the same values as in a but with no repetitions. The resulting vector is sorted in ascending order. A can be a cell array of strings.
B =唯一（A）返回与a中相同的值但没有重复。生成的矢量按升序排序。 A可以是字符串的单元格数组。
B = unique(A,'stable') does the same as above, but without sorting.
B =唯一（A，'稳定'）与上面相同，但没有排序。
B = unique(A,'rows') returns the unique rows ofA`.
B =唯一（A，'rows'）返回唯一的A`行。
[B,i,j] = unique(...) also returns index vectors i and j such that B = A(i) and A = B(j) (or B = A(i,:) and A = B(j,:)).
[B，i，j] =唯一（...）也返回索引向量i和j，使得B = A（i）和A = B（j）（或B = A（i，:)和A = B （J，:)）。
Reference: http://cens.ioc.ee/local/man/matlab/techdoc/ref/unique.html
参考：http：//cens.ioc.ee/local/man/matlab/techdoc/ref/unique.html
Documentation: https://uk.mathworks.com/help/matlab/ref/unique.html
文档：https：//uk.mathworks.com/help/matlab/ref/unique.html
#2
0
The answers below are correct but if the user does not want to sort the data, you can use unique with the parameter stable
下面的答案是正确的，但如果用户不想对数据进行排序，则可以使用unique与参数stable
A = [1,2,3,4,5,1,2,3,4,5,1,2,3]
B = unique(A,'stable')
#1
2
Try this,
尝试这个，
A = [1,2,3,4,5,1,2,3,4,5,1,2,3]
y = unique(A)
B = unique(A) returns the same values as in a but with no repetitions. The resulting vector is sorted in ascending order. A can be a cell array of strings.
B =唯一（A）返回与a中相同的值但没有重复。生成的矢量按升序排序。 A可以是字符串的单元格数组。
B = unique(A,'stable') does the same as above, but without sorting.
B =唯一（A，'稳定'）与上面相同，但没有排序。
B = unique(A,'rows') returns the unique rows ofA`.
B =唯一（A，'rows'）返回唯一的A`行。
[B,i,j] = unique(...) also returns index vectors i and j such that B = A(i) and A = B(j) (or B = A(i,:) and A = B(j,:)).
[B，i，j] =唯一（...）也返回索引向量i和j，使得B = A（i）和A = B（j）（或B = A（i，:)和A = B （J，:)）。
Reference: http://cens.ioc.ee/local/man/matlab/techdoc/ref/unique.html
参考：http：//cens.ioc.ee/local/man/matlab/techdoc/ref/unique.html
Documentation: https://uk.mathworks.com/help/matlab/ref/unique.html
文档：https：//uk.mathworks.com/help/matlab/ref/unique.html
#2
0
The answers below are correct but if the user does not want to sort the data, you can use unique with the parameter stable
下面的答案是正确的，但如果用户不想对数据进行排序，则可以使用unique与参数stable
A = [1,2,3,4,5,1,2,3,4,5,1,2,3]
B = unique(A,'stable')