{"id":3994,"date":"2023-07-14T06:54:29","date_gmt":"2023-07-14T06:54:29","guid":{"rendered":"https:\/\/statorials.org\/ko\/r-%e1%84%80%e1%85%ad%e1%84%83%e1%85%a2\/"},"modified":"2023-07-14T06:54:29","modified_gmt":"2023-07-14T06:54:29","slug":"r-%e1%84%80%e1%85%ad%e1%84%83%e1%85%a2","status":"publish","type":"post","link":"https:\/\/statorials.org\/ko\/r-%e1%84%80%e1%85%ad%e1%84%83%e1%85%a2\/","title":{"rendered":"R\uc5d0\uc11c \uc2dc\ud504\ud2b8 \uac12\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95(\uc608\uc81c \ud3ec\ud568)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">R\uc758 <a href=\"https:\/\/dplyr.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">dplyr<\/a> \ud328\ud0a4\uc9c0\uc5d0 \uc788\ub294 <strong>lag()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc9c0\uc5f0 \uac12\uc744 \uacc4\uc0b0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774 \ud568\uc218\ub294 \ub2e4\uc74c \uae30\ubcf8 \uad6c\ubb38\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <strong><span style=\"color: #000000;\">\uc624\ud504\uc14b(x, n=1, \u2026)<\/span><\/strong><\/p>\n<p> <span style=\"color: #000000;\">\uae08:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>x<\/strong> : \uac12\uc758 \ubca1\ud130<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>n<\/strong> : \uc9c0\uc5f0\ud560 \uc704\uce58 \uc218<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uc608\uc5d0\uc11c\ub294 \uc2e4\uc81c\ub85c \uc774 \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc774\ub3d9\ub41c \uac12\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>\uc608: R\uc5d0\uc11c \uc774\ub3d9\ub41c \uac12 \uacc4\uc0b0<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">\uc5f0\uc18d 10\uc77c \ub3d9\uc548 \ub9e4\uc7a5\uc758 \ud310\ub9e4 \uac74\uc218\ub97c \ud45c\uc2dc\ud558\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ub370\uc774\ud130 \ud504\ub808\uc784\uc774 R\uc5d0 \uc788\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008080;\">#create data frame\n<\/span>df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (day=1:10,\n                 sales=c(18, 10, 14, 13, 19, 24, 25, 29, 15, 18))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n   day sales\n1 1 18\n2 2 10\n3 3 14\n4 4 13\n5 5 19\n6 6 24\n7 7 25\n8 8 29\n9 9 15\n10 10 18<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">dplyr \ud328\ud0a4\uc9c0\uc758 <strong>lag()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac01 \ud589\uc5d0 \ub300\ud55c \uc804\ub0a0 \ub9e4\ucd9c\uc744 \ud45c\uc2dc\ud558\ub294 \uc9c0\uc5f0 \uc5f4\uc744 \ub9cc\ub4e4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">library<\/span> (dplyr)\n\n<span style=\"color: #008080;\">#add new column that shows sales for previous day\n<\/span>df$previous_day_sales &lt;- dplyr::lag(df$sales, n= <span style=\"color: #008000;\">1<\/span> )\n\n<span style=\"color: #008080;\">#view updated data frame\n<\/span>df\n\n   day sales previous_day_sales\n1 1 18 NA\n2 2 10 18\n3 3 14 10\n4 4 13 14\n5 5 19 13\n6 6 24 19\n7 7 25 24\n8 8 29 25\n9 9 15 29\n10 10 18 15<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">\uacb0\uacfc\ub97c \ud574\uc11d\ud558\ub294 \ubc29\ubc95\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\ub9e4\ucd9c \uc5f4\uc5d0 \uc774\uc804 \uac12\uc774 \uc5c6\uc73c\ubbc0\ub85c \uc624\ud504\uc14b \uc5f4\uc758 \uccab \ubc88\uc9f8 \uac12\uc740 <b>NA<\/b> \uc785\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\">\uc624\ud504\uc14b \uc5f4\uc758 \ub450 \ubc88\uc9f8 \uac12\uc740 \ud310\ub9e4 \uc5f4\uc758 \uc774\uc804 \uac12\uc774\ubbc0\ub85c <strong>18<\/strong> \uc785\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\">\uc624\ud504\uc14b \uc5f4\uc758 \uc138 \ubc88\uc9f8 \uac12\uc740 \ud310\ub9e4 \uc5f4\uc758 \uc774\uc804 \uac12\uc774\ubbc0\ub85c <strong>10<\/strong> \uc785\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ub4f1\ub4f1.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub610\ud55c <strong>lag()<\/strong> \ud568\uc218\uc5d0\uc11c <strong>n<\/strong> \uc778\uc218\uc758 \uac12\uc744 \ubcc0\uacbd\ud558\uc5ec \ub2e4\ub978 \uc218\uc758 \uc774\uc804 \uc704\uce58\uc5d0 \ub300\ud55c \uc9c0\uc5f0 \uac12\uc744 \uacc4\uc0b0\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">library<\/span> (dplyr)\n\n<span style=\"color: #008080;\">#add new column that shows sales for two days prior\n<\/span>df$previous_day_sales &lt;- dplyr::lag(df$sales, n= <span style=\"color: #008000;\">2<\/span> )\n\n<span style=\"color: #008080;\">#view updated data frame\n<\/span>df\n\n   day sales previous_day_sales\n1 1 18 NA\n2 2 10 NA\n3 3 14 18\n4 4 13 10\n5 5 19 14\n6 6 24 13\n7 7 25 19\n8 8 29 24\n9 9 15 25\n10 10 18 29\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\"><strong>\ucc38\uace0<\/strong> : \ub9ac\ub4dc \uc5f4\uc744 \uc0dd\uc131\ud558\ub824\uba74 <strong>lag()<\/strong> \ud568\uc218 \ub300\uc2e0 dplyr \ud328\ud0a4\uc9c0\uc758 <strong>Lead()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>\ucd94\uac00 \ub9ac\uc18c\uc2a4<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 R\uc5d0\uc11c \ub2e4\ub978 \uc77c\ubc18\uc801\uc778 \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95\uc744 \uc124\uba85\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/ko\/r\u110b\u1174-n-\u1112\u1161\u11b7\u1109\u116e\/\" target=\"_blank\" rel=\"noopener\">dplyr\uc5d0\uc11c n() \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/dplyr\u1105\u1173\u11af-\u1110\u1169\u11bc\u1112\u1162\/\" target=\"_blank\" rel=\"noopener\">dplyr\uc5d0\uc11c across() \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/dplyr-\u110b\u1175\u1103\u1169\u11bc\/\" target=\"_blank\" rel=\"noopener\">dplyr\uc5d0\uc11c relocate() \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/dplyr-\u1109\u1173\u11af\u1105\u1161\u110b\u1175\u1109\u1173\/\" target=\"_blank\" rel=\"noopener\">dplyr\uc5d0\uc11c Slice() \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>R\uc758 dplyr \ud328\ud0a4\uc9c0\uc5d0 \uc788\ub294 lag() \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc9c0\uc5f0 \uac12\uc744 \uacc4\uc0b0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \ud568\uc218\ub294 \ub2e4\uc74c \uae30\ubcf8 \uad6c\ubb38\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \uc624\ud504\uc14b(x, n=1, \u2026) \uae08: x : \uac12\uc758 \ubca1\ud130 n : \uc9c0\uc5f0\ud560 \uc704\uce58 \uc218 \ub2e4\uc74c \uc608\uc5d0\uc11c\ub294 \uc2e4\uc81c\ub85c \uc774 \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc774\ub3d9\ub41c \uac12\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4. \uc608: R\uc5d0\uc11c \uc774\ub3d9\ub41c \uac12 \uacc4\uc0b0 \uc5f0\uc18d 10\uc77c \ub3d9\uc548 \ub9e4\uc7a5\uc758 \ud310\ub9e4 \uac74\uc218\ub97c \ud45c\uc2dc\ud558\ub294 \ub2e4\uc74c\uacfc [&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-3994","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>R\uc5d0\uc11c \uc774\ub3d9\ub41c \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\uc758 dplyr \ud328\ud0a4\uc9c0\uc5d0 \uc788\ub294 lag() \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc9c0\uc5f0 \uac12\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \uc608\uc81c\uc640 \ud568\uaed8 \uc124\uba85\ud569\ub2c8\ub2e4.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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