{"id":2294,"date":"2023-07-22T21:30:46","date_gmt":"2023-07-22T21:30:46","guid":{"rendered":"https:\/\/statorials.org\/ko\/r-%e1%84%8b%e1%85%a7%e1%86%af%e1%84%8b%e1%85%b4-%e1%84%80%e1%85%a9%e1%84%8b%e1%85%b2-%e1%84%80%e1%85%a1%e1%86%b9\/"},"modified":"2023-07-22T21:30:46","modified_gmt":"2023-07-22T21:30:46","slug":"r-%e1%84%8b%e1%85%a7%e1%86%af%e1%84%8b%e1%85%b4-%e1%84%80%e1%85%a9%e1%84%8b%e1%85%b2-%e1%84%80%e1%85%a1%e1%86%b9","status":"publish","type":"post","link":"https:\/\/statorials.org\/ko\/r-%e1%84%8b%e1%85%a7%e1%86%af%e1%84%8b%e1%85%b4-%e1%84%80%e1%85%a9%e1%84%8b%e1%85%b2-%e1%84%80%e1%85%a1%e1%86%b9\/","title":{"rendered":"A: \uc5f4\uc5d0\uc11c \uace0\uc720\ud55c \uac12\uc744 \ucc3e\ub294 \ubc29\ubc95"},"content":{"rendered":"

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R\uc758 Unique()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub370\uc774\ud130 \ud504\ub808\uc784\uc758 \uc5f4\uc5d0\uc11c \uace0\uc720\ud55c \uac12\uc744 \ucc3e\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n

\uc774 \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 \ub2e4\uc74c \ub370\uc774\ud130 \ud504\ub808\uc784\uacfc \ud568\uaed8 \uc774 \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\ub294 \uba87 \uac00\uc9c0 \uc608\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/span><\/p>\n

 #create data frame\n<\/span>df <- data. frame<\/span> (team=c('A', 'A', 'B', 'B', 'C', 'C'),\n                 points=c(90, 99, 90, 85, 90, 85),\n                 assists=c(33, 33, 31, 39, 34, 34),\n                 rebounds=c(30, 28, 24, 24, 28, 28))\n\n#view data frame\n<\/span>df\n\n  team points assists rebounds\n1 A 90 33 30\n2 A 99 33 28\n3 B 90 31 24\n4 B 85 39 24\n5 C 90 34 28\n6 C 85 34 28\n<\/span><\/span><\/strong><\/pre>\n
 \uc608\uc2dc 1: \uc5f4\uc5d0\uc11c \uace0\uc720\ud55c \uac12 \ucc3e\uae30<\/strong><\/span><\/h3>\n
 \ub2e4\uc74c \ucf54\ub4dc\ub294 “team” \uc5f4\uc5d0\uc11c \uace0\uc720\ud55c \uac12\uc744 \ucc3e\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4<\/span> .<\/span><\/p>\n
 #find unique values in 'team' column\n<\/span>single(df$team)\n\n[1] \u201cA\u201d \u201cB\u201d \u201cC\u201d\n<\/span><\/span><\/strong><\/pre>\n
 \ube44\uc2b7\ud55c \uad6c\ubb38\uc744 \uc0ac\uc6a9\ud558\uc5ec “\ud3ec\uc778\ud2b8” \uc5f4\uc5d0\uc11c \uace0\uc720\ud55c \uac12\uc744 \ucc3e\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n
 #find unique values in 'points' column\n<\/span>unique(df$points)\n\n[1] 90 99 85<\/span><\/span><\/strong><\/pre>\n
 \uc608\uc2dc 2: \uc5f4\uc5d0\uc11c \uace0\uc720\ud55c \uac12 \ucc3e\uae30 \ubc0f \uc815\ub82c<\/strong><\/span><\/h3>\n
 \ub2e4\uc74c \ucf54\ub4dc\ub294 “\ud3ec\uc778\ud2b8” \uc5f4\uc5d0\uc11c \uace0\uc720\ud55c \uac12\uc744 \ucc3e\uace0 \uc815\ub82c\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4<\/span> .<\/span><\/p>\n
 #find and sort unique values in 'points' column<\/span>\nsort(single(df$points))\n\n[1] 85 90 99\n<\/span><\/span><\/strong><\/pre>\n
 \uace0\uc720\ud55c \uac12\uc744 \ub0b4\ub9bc\ucc28\uc21c\uc73c\ub85c \uc815\ub82c\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n
 #find and sort unique values in 'points' column\n<\/span>sort(unique(df$points), decreasing= TRUE<\/span> )\n\n[1] 99 90 85<\/span><\/span><\/strong><\/pre>\n
 \uc608\uc2dc 3: \uc5f4\uc5d0\uc11c \uace0\uc720\ud55c \uac12 \ucc3e\uae30 \ubc0f \uacc4\uc0b0<\/strong><\/span><\/h3>\n
 \ub2e4\uc74c \ucf54\ub4dc\ub294 “\ud3ec\uc778\ud2b8” \uc5f4\uc5d0\uc11c \uac01 \uace0\uc720 \uac12\uc758 \uc218\ub97c \ucc3e\uace0 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n
 #find and count unique values in 'points' column\n<\/span>table(df$points)\n\n85 90 99 \n 2 3 1<\/span><\/span><\/strong><\/pre>\n
 \uacb0\uacfc\uc5d0\uc11c \uc6b0\ub9ac\ub294 \ub2e4\uc74c\uc744 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/span><\/p>\n