{"id":1886,"date":"2023-07-24T14:21:44","date_gmt":"2023-07-24T14:21:44","guid":{"rendered":"https:\/\/statorials.org\/ko\/%e1%84%8b%e1%85%ac%e1%86%ab%e1%84%8d%e1%85%a9%e1%86%a8-%e1%84%8c%e1%85%a9%e1%84%8b%e1%85%b5%e1%86%ab-r\/"},"modified":"2023-07-24T14:21:44","modified_gmt":"2023-07-24T14:21:44","slug":"%e1%84%8b%e1%85%ac%e1%86%ab%e1%84%8d%e1%85%a9%e1%86%a8-%e1%84%8c%e1%85%a9%e1%84%8b%e1%85%b5%e1%86%ab-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/ko\/%e1%84%8b%e1%85%ac%e1%86%ab%e1%84%8d%e1%85%a9%e1%86%a8-%e1%84%8c%e1%85%a9%e1%84%8b%e1%85%b5%e1%86%ab-r\/","title":{"rendered":"R\uc5d0\uc11c left join\uc744 \uc218\ud589\ud558\ub294 \ubc29\ubc95(\uc608\uc81c \ud3ec\ud568)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><strong>merge()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uae30\ubcf8 R\uc5d0\uc11c \uc67c\ucabd \uc870\uc778\uc744 \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#left join using base R<\/span>\nmerge(df1,df2, all. <span style=\"color: #3366ff;\">x<\/span> = <span style=\"color: #008000;\">TRUE<\/span> )\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\"><a href=\"https:\/\/dplyr.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">dplyr<\/a> \ud328\ud0a4\uc9c0\uc758 <strong>left_join()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc67c\ucabd \uc870\uc778\uc744 \uc218\ud589\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#left join using dplyr\n<\/span>dplyr::left_join(df2, df1)<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>\ucc38\uace0:<\/strong> \ub9e4\uc6b0 \ud070 \ub370\uc774\ud130 \uc138\ud2b8\ub85c \uc791\uc5c5\ud558\ub294 \uacbd\uc6b0 <strong>left_join()<\/strong> \ud568\uc218\uac00 <strong>merge()<\/strong> \ud568\uc218\ubcf4\ub2e4 \ube60\ub978 \uacbd\ud5a5\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\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 \uae30\ub2a5\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: #008080;\">#define first data frame\n<\/span>df1 &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (team=c(' <span style=\"color: #ff0000;\">Mavs<\/span> ', ' <span style=\"color: #ff0000;\">Hawks<\/span> ', ' <span style=\"color: #ff0000;\">Spurs<\/span> ', ' <span style=\"color: #ff0000;\">Nets<\/span> '),\n                  dots=c(99, 93, 96, 104))\n\ndf1\n\n   team points\n1 Mavs 99\n2 Hawks 93\n3 Spurs 96\n4 Nets 104\n\n<span style=\"color: #008080;\">#define second data frame\n<\/span>df2 &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (team=c(' <span style=\"color: #ff0000;\">Mavs<\/span> ', ' <span style=\"color: #ff0000;\">Hawks<\/span> ', ' <span style=\"color: #ff0000;\">Spurs<\/span> ', ' <span style=\"color: #ff0000;\">Nets<\/span> '),\n                  rebounds=c(25, 32, 38, 30),\n                  assists=c(19, 18, 22, 25))\n\ndf2\n\n   team rebound assists\n1 Mavs 25 19\n2 Hawks 32 18\n3 Spurs 38 22\n4 Nets 30 25<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>\uc608 1: Base R\uc744 \uc0ac\uc6a9\ud55c \uc67c\ucabd \uc870\uc778<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">\uae30\ubcf8 R\uc758 <strong>merge()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec &#8216;team&#8217; \uc5f4\uc744 \uc870\uc778\ud560 \uc5f4\ub85c \uc0ac\uc6a9\ud558\uc5ec \uc67c\ucabd \uc870\uc778\uc744 \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#perform left join using base R<\/span>\nmerge(df1, df2, by=' <span style=\"color: #ff0000;\">team<\/span> ', all. <span style=\"color: #3366ff;\">x<\/span> = <span style=\"color: #008000;\">TRUE<\/span> )\n\n   team points rebound assists\n1 Hawks 93 32 18\n2 Mavs 99 25 19\n3 Nets 104 30 25\n4 Spurs 96 38 22\n<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>\uc608 2: dplyr\uc744 \uc0ac\uc6a9\ud55c \uc67c\ucabd \uc870\uc778<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">dplyr \ud328\ud0a4\uc9c0\uc758 <strong>left_join()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec &#8216;team&#8217; \uc5f4\uc744 \uc870\uc778\ud560 \uc5f4\ub85c \uc0ac\uc6a9\ud558\uc5ec \uc67c\ucabd \uc870\uc778\uc744 \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #993300;\">library<\/span> (dplyr)\n\n<span style=\"color: #008080;\">#perform left join using dplyr<\/span> \nleft_join(df1, df2, by=' <span style=\"color: #ff0000;\">team<\/span> ')\n\n   team points rebound assists\n1 Mavs 99 25 19\n2 Hawks 93 32 18\n3 Spurs 96 38 22\n4 Nets 104 30 25<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\uc774 \ub450 \ud568\uc218 \uc0ac\uc774\uc5d0\uc11c \uc54c \uc218 \uc788\ub294 \ud55c \uac00\uc9c0 \ucc28\uc774\uc810\uc740 <strong>merge()<\/strong> \ud568\uc218\uac00 \uc870\uc778\uc744 \uc218\ud589\ud558\ub294 \ub370 \uc0ac\uc6a9\ud55c \uc5f4\uc744 \uae30\ubc18\uc73c\ub85c \ud589\uc744 \uc0ac\uc804\uc21c\uc73c\ub85c \uc790\ub3d9 \uc815\ub82c\ud55c\ub2e4\ub294 \uac83\uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ubc18\ub300\ub85c <strong>left_join()<\/strong> \ud568\uc218\ub294 \uccab \ubc88\uc9f8 \ub370\uc774\ud130 \ud504\ub808\uc784\uc5d0 \uc788\ub294 \ud589\uc758 \uc6d0\ub798 \uc21c\uc11c\ub97c \uc720\uc9c0\ud569\ub2c8\ub2e4.<\/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 \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\/\u1102\u1162\u1107\u116e-\u110c\u1169\u110b\u1175\u11ab-r\/\" target=\"_blank\" rel=\"noopener\">R\uc5d0\uc11c \ub0b4\ubd80 \uc870\uc778\uc744 \uc218\ud589\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/r\u110b\u1174-\u1111\u1165\u110c\u1175-\u1106\u1162\u110e\u1175\u11bc\/\" target=\"_blank\" rel=\"noopener\">R\uc5d0\uc11c \ud37c\uc9c0 \ub9e4\uce6d\uc744 \uc218\ud589\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/r-\u1103\u1166\u110b\u1175\u1110\u1165-\u1111\u1173\u1105\u1166\u110b\u1175\u11b7\u110b\u1166-\u110b\u1167\u11af\u110b\u1173\u11af-\u110e\u116e\u1100\u1161\u1112\u1161\u11b8\u1102\u1175\u1103\u1161\/\" target=\"_blank\" rel=\"noopener\">R\uc758 \ub370\uc774\ud130 \ud504\ub808\uc784\uc5d0 \uc5f4\uc744 \ucd94\uac00\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/r-\u1105\u1169\u11af\u1105\u1175\u11bc-\u110f\u1165\u11af\u1105\u1165\u11b7\/\" target=\"_blank\" rel=\"noopener\">R\uc758 \ub370\uc774\ud130 \ud504\ub808\uc784\uc5d0\uc11c \uc5f4\uc744 \uc81c\uac70\ud558\ub294 \ubc29\ubc95<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>merge() \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uae30\ubcf8 R\uc5d0\uc11c \uc67c\ucabd \uc870\uc778\uc744 \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. #left join using base R merge(df1,df2, all. x = TRUE ) dplyr \ud328\ud0a4\uc9c0\uc758 left_join() \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc67c\ucabd \uc870\uc778\uc744 \uc218\ud589\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4. #left join using dplyr dplyr::left_join(df2, df1) \ucc38\uace0: \ub9e4\uc6b0 \ud070 \ub370\uc774\ud130 \uc138\ud2b8\ub85c \uc791\uc5c5\ud558\ub294 \uacbd\uc6b0 left_join() \ud568\uc218\uac00 merge() \ud568\uc218\ubcf4\ub2e4 \ube60\ub978 \uacbd\ud5a5\uc774 \uc788\uc2b5\ub2c8\ub2e4. \ub2e4\uc74c \uc608\uc5d0\uc11c\ub294 \ub2e4\uc74c \ub370\uc774\ud130 [&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-1886","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 \uc67c\ucabd \uc870\uc778\uc744 \uc218\ud589\ud558\ub294 \ubc29\ubc95(\uc608\uc81c \ud3ec\ud568) \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"\uc774 \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 \uba87 \uac00\uc9c0 \uc608\ub97c \ud1b5\ud574 R\uc5d0\uc11c \uc67c\ucabd \uc870\uc778\uc744 \uc218\ud589\ud558\ub294 \ubc29\ubc95\uc744 \uc124\uba85\ud569\ub2c8\ub2e4.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/ko\/\u110b\u116c\u11ab\u110d\u1169\u11a8-\u110c\u1169\u110b\u1175\u11ab-r\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R\uc5d0\uc11c \uc67c\ucabd \uc870\uc778\uc744 \uc218\ud589\ud558\ub294 \ubc29\ubc95(\uc608\uc81c \ud3ec\ud568) \u2013 Statorials\" \/>\n<meta property=\"og:description\" content=\"\uc774 \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 \uba87 \uac00\uc9c0 \uc608\ub97c \ud1b5\ud574 R\uc5d0\uc11c \uc67c\ucabd \uc870\uc778\uc744 \uc218\ud589\ud558\ub294 \ubc29\ubc95\uc744 \uc124\uba85\ud569\ub2c8\ub2e4.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/ko\/\u110b\u116c\u11ab\u110d\u1169\u11a8-\u110c\u1169\u110b\u1175\u11ab-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-24T14:21:44+00:00\" \/>\n<meta name=\"author\" content=\"\ubca4\uc790\ubbfc \uc564\ub354\uc2a8\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\ubca4\uc790\ubbfc \uc564\ub354\uc2a8\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\ubd84\" \/>\n<script type=\"application\/ld+json\" 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