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plurals

POunique() for more than one variable
primarykey
Id
7790732
data
AcceptedAnswerId
7790949
AnswerCount
4
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2011-10-17T07:45:00.430
FavoriteCount
7
LastActivityDate
2018-01-05T13:09:52.780
LastEditDate
2016-10-18T17:30:04.323
LastEditorUserId
1191259
OwnerUserId
192377
ParentId
0
PostTypeId
1
Score
42
ViewCount
102911
LastEditorDisplayName
text
Body
I have the following data frame in R: <pre><code>> str(df) 'data.frame': 545227 obs. of 15 variables: $ ykod : int 93 93 93 93 93 93 93 93 93 93 ... $ yad : Factor w/ 42 levels "BAKUGAN","BARBIE",..: 30 30 30 30 30 30 30 30 30 30 ... $ per : Factor w/ 3 levels "2 AYLIK","3 AYLIK",..: 3 3 3 3 3 3 3 3 3 3 ... $ donem: int 201101 201101 201101 201101 201101 201101 201101 201101 201101 201101 ... $ sayi : int 201101 201101 201101 201101 201101 201101 201101 201101 201101 201101 ... $ mkod : int 4 5 9 11 12 18 20 22 25 26 ... $ mad : Factor w/ 10464 levels " Defne Market ",..: 405 8075 9710 10145 9297 7973 2542 3892 2759 5769 ... $ mtip : Factor w/ 29 levels "Abone Bürosu ",..: 2 20 20 2 2 2 2 2 2 2 ... $ kanal: Factor w/ 2 levels "OB","SS": 2 2 2 2 2 2 2 2 2 2 ... $ bkod : int 110565 110565 110565 110565 110565 110565 110565 110565 110565 110565 ... $ bad : Factor w/ 212 levels "4. Levent","500 Evler",..: 167 167 167 167 167 167 167 167 167 167 ... $ bolge: Factor w/ 12 levels "Adana Şehiriçi",..: 7 7 7 7 7 7 7 7 7 7 ... $ sevk : int 2 3 3 3 2 2 2 6 2 2 ... $ iade : int 2 1 0 2 0 2 1 0 0 2 ... $ satis: int 0 2 3 1 2 0 1 6 2 0 ... </code></pre> I want to list unique (like SQL's DISTINCT) values for selected multiple variables. For example, <code>unique(yad)</code> gives me the names of each 42 elements, but I need to extract two columns (<code>yad</code> and <code>per</code> together, with all unique combinations): <pre><code>yad per --- --- BARBIE AYLIK BAKUGAN 2 AYLIK MICKEY MOUSE 2 AYLIK TINKERBELL 3 AYLIK ... ... </code></pre> How can I achieve this?
Tags
<r><unique>
Title
unique() for more than one variable
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USFrank
UserOwnerUserId
1. USMehper C. Palavuzlar
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 POunique() for more than one variable
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
2. VO
 singulars
 PostPostId
 POunique() for more than one variable
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId
1. This table or related slice is empty.

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