{"id":2218,"date":"2023-07-23T05:04:40","date_gmt":"2023-07-23T05:04:40","guid":{"rendered":"https:\/\/statorials.org\/ko\/dplyr-%e1%84%87%e1%85%a7%e1%86%af%e1%84%83%e1%85%a9-%e1%84%80%e1%85%a8%e1%84%8c%e1%85%a5%e1%86%bc\/"},"modified":"2023-07-23T05:04:40","modified_gmt":"2023-07-23T05:04:40","slug":"dplyr-%e1%84%87%e1%85%a7%e1%86%af%e1%84%83%e1%85%a9-%e1%84%80%e1%85%a8%e1%84%8c%e1%85%a5%e1%86%bc","status":"publish","type":"post","link":"https:\/\/statorials.org\/ko\/dplyr-%e1%84%87%e1%85%a7%e1%86%af%e1%84%83%e1%85%a9-%e1%84%80%e1%85%a8%e1%84%8c%e1%85%a5%e1%86%bc\/","title":{"rendered":"Dplyr\uc744 \uc0ac\uc6a9\ud558\uc5ec \uace0\uc720 \uac12\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95(\uc608\uc81c \ud3ec\ud568)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><a href=\"https:\/\/dplyr.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">dplyr<\/a> \uc758 <strong>n_distinct()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec R \ub370\uc774\ud130 \ud504\ub808\uc784\uc758 \uace0\uc720 \uac12 \uc218\ub97c \uacc4\uc0b0\ud558\ub824\uba74 \ub2e4\uc74c \ubc29\ubc95 \uc911 \ud558\ub098\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>\ubc29\ubc95 1: \uc5f4\uc758 \uace0\uc720 \uac12 \uacc4\uc0b0<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>n_distinct(df$column_name)\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>\ubc29\ubc95 2: \ubaa8\ub4e0 \uc5f4\uc758 \uace0\uc720 \uac12 \uacc4\uc0b0<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>sapply(df, <span style=\"color: #008000;\">function<\/span> (x) n_distinct(x))<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>\ubc29\ubc95 3: \uadf8\ub8f9\ubcc4\ub85c \uace0\uc720\ud55c \uac12 \uacc4\uc0b0<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #000000;\">df %&gt;%<\/span><\/strong>\n<strong><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">group_by<\/span> (grouping_column) %&gt;%<\/span><\/strong>\n<strong><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">summarize<\/span> (count_distinct = n_distinct(values_column))<\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uc608\uc5d0\uc11c\ub294 \ub2e4\uc74c \ub370\uc774\ud130 \ud504\ub808\uc784\uc5d0\uc11c \uc774\ub7ec\ud55c \uac01 \ubc29\ubc95\uc744 \uc2e4\uc81c\ub85c \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (dplyr)\n\n<span style=\"color: #008080;\">#create data frame\n<\/span>df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (team=c('A', 'A', 'A', 'A', 'B', 'B', 'B', 'B'),\n                 points=c(6, 6, 8, 10, 9, 9, 12, 12),\n                 assists=c(3, 6, 4, 2, 4, 5, 5, 9))\n\n<span style=\"color: #008080;\">#view data frame<\/span>\ndf\n\n  team points assists\n1 to 6 3\n2 to 6 6\n3 to 8 4\n4 to 10 2\n5 B 9 4\n6 B 9 5\n7 B 12 5\n8 B 12 9\n<\/span><\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>\ubc29\ubc95 1: \uc5f4\uc758 \uace0\uc720 \uac12 \uacc4\uc0b0<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 <strong>n_distinct()\ub97c<\/strong> \uc0ac\uc6a9\ud558\uc5ec &#8216;team&#8217; \uc5f4\uc758 \uace0\uc720 \uac12 \uc218\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#count distinct values in 'team' column\n<span style=\"color: #000000;\">n_distinct(df$team)\n\n[1] 2\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">&#8216;\ud300&#8217; \uc5f4\uc5d0\ub294 <strong>2\uac1c\uc758<\/strong> \uace0\uc720\ud55c \uac12\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\ubc29\ubc95 2: \ubaa8\ub4e0 \uc5f4\uc758 \uace0\uc720 \uac12 \uacc4\uc0b0<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 <strong>sapply()<\/strong> \ubc0f <strong>n_distinct()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub370\uc774\ud130 \ud504\ub808\uc784\uc758 \uac01 \uc5f4\uc5d0 \uc788\ub294 \uace0\uc720 \uac12\uc758 \uac1c\uc218\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#count distinct values in every column<\/span>\nsapply(df, <span style=\"color: #008000;\">function<\/span> (x) n_distinct(x))<\/span>\n<span style=\"color: #000000;\">\n   team points assists \n      2 5 6<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\uacb0\uacfc\uc5d0\uc11c \uc6b0\ub9ac\ub294 \ub2e4\uc74c\uc744 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">&#8216;\ud300&#8217; \uc5f4\uc5d0\ub294 <strong>2\uac1c\uc758<\/strong> \uace0\uc720\ud55c \uac12\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\">&#8220;\ud3ec\uc778\ud2b8&#8221; \uc5f4\uc5d0\ub294 <strong>5\uac1c\uc758<\/strong> \uace0\uc720\ud55c \uac12\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\">&#8220;\ub3c4\uc6c0\ub9d0&#8221; \uc5f4\uc5d0\ub294 <strong>6\uac1c\uc758<\/strong> \uace0\uc720\ud55c \uac12\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<h3> <span style=\"color: #000000;\"><strong>\ubc29\ubc95 3: \uadf8\ub8f9\ubcc4\ub85c \uace0\uc720\ud55c \uac12 \uacc4\uc0b0<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 <strong>n_distinct()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uadf8\ub8f9\ub2f9 \uace0\uc720 \uac12\uc758 \uac1c\uc218\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#count distinct 'points' values by 'team'\n<\/span>df %&gt;%\n  <span style=\"color: #3366ff;\">group_by<\/span> (team) %&gt;%\n  <span style=\"color: #3366ff;\">summarize<\/span> (distinct_points = n_distinct(points))\n\n# A tibble: 2 x 2\n  team distinct_points \n1 to 3\n2 B 2\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\uacb0\uacfc\uc5d0\uc11c \uc6b0\ub9ac\ub294 \ub2e4\uc74c\uc744 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">A\ud300\uc5d0\ub294 <strong>3\uac00\uc9c0<\/strong> \uace0\uc720\ud55c \ud3ec\uc778\ud2b8 \uac12\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\">B\ud300\uc5d0\ub294 <strong>2<\/strong> \uac00\uc9c0 \ubcc4\ub3c4\uc758 \ud3ec\uc778\ud2b8 \uac12\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<h3> <span style=\"color: #000000;\"><strong>\ucd94\uac00 \ub9ac\uc18c\uc2a4<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 dplyr\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub2e4\ub978 \uc77c\ubc18\uc801\uc778 \uc791\uc5c5\uc744 \uc218\ud589\ud558\ub294 \ubc29\ubc95\uc744 \uc124\uba85\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/ko\/dplyr\u110b\u1173\u11af-\u1102\u1169\u11a8\u110b\u1173\u11b7\u1112\u1161\u1103\u1161\/\" target=\"_blank\" rel=\"noopener\">dplyr\uc744 \uc0ac\uc6a9\ud558\uc5ec \uac12\uc744 \ub2e4\uc2dc \ucf54\ub529\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/dplyr-na\u1105\u1173\u11af-0\u110b\u1173\u1105\u1169-\u1100\u116d\u110e\u1166\/\" target=\"_blank\" rel=\"noopener\">dplyr\uc5d0\uc11c NA\ub97c 0\uc73c\ub85c \ubc14\uafb8\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/\u1100\u1173\u1105\u116e\u11b8\u1107\u1167\u11af-dplyr-\u1107\u116e\u11ab\u1105\u1172\/\" target=\"_blank\" rel=\"noopener\">dplyr\uc744 \uc0ac\uc6a9\ud558\uc5ec \uadf8\ub8f9\ubcc4\ub85c \ubcc0\uc218\ub97c \uc815\ub82c\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/dplyr-\u1100\u1173\u1105\u116e\u11b8\u110b\u1174-\u110e\u1165\u11ba-\u1107\u1165\u11ab\u110d\u1162-\u110c\u116e\u11af\u110b\u1173\u11af-\u1109\u1165\u11ab\u1110\u1162\u11a8\u1112\u1161\u1109\u1175\u11b8\u1109\u1175\u110b\u1169.\/\" target=\"_blank\" rel=\"noopener\">dplyr\uc744 \uc0ac\uc6a9\ud558\uc5ec \uadf8\ub8f9\ubcc4\ub85c \uccab \ubc88\uc9f8 \ud589\uc744 \uc120\ud0dd\ud558\ub294 \ubc29\ubc95<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>dplyr \uc758 n_distinct() \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec R \ub370\uc774\ud130 \ud504\ub808\uc784\uc758 \uace0\uc720 \uac12 \uc218\ub97c \uacc4\uc0b0\ud558\ub824\uba74 \ub2e4\uc74c \ubc29\ubc95 \uc911 \ud558\ub098\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubc29\ubc95 1: \uc5f4\uc758 \uace0\uc720 \uac12 \uacc4\uc0b0 n_distinct(df$column_name) \ubc29\ubc95 2: \ubaa8\ub4e0 \uc5f4\uc758 \uace0\uc720 \uac12 \uacc4\uc0b0 sapply(df, function (x) n_distinct(x)) \ubc29\ubc95 3: \uadf8\ub8f9\ubcc4\ub85c \uace0\uc720\ud55c \uac12 \uacc4\uc0b0 df %&gt;% group_by (grouping_column) %&gt;% summarize (count_distinct = n_distinct(values_column)) \ub2e4\uc74c \uc608\uc5d0\uc11c\ub294 \ub2e4\uc74c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-2218","post","type-post","status-publish","format-standard","hentry","category-20"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>dplyr\uc744 \uc0ac\uc6a9\ud558\uc5ec \uace0\uc720 \uac12\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95(\uc608\uc81c \ud3ec\ud568) - Statorials<\/title>\n<meta name=\"description\" content=\"\uc774 \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 R\uc5d0\uc11c dplyr\uc744 \uc0ac\uc6a9\ud558\uc5ec \uace0\uc720\ud55c \uac12\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \uba87 \uac00\uc9c0 \uc608\uc640 \ud568\uaed8 \uc124\uba85\ud569\ub2c8\ub2e4.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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