{"id":946,"date":"2023-07-28T05:30:58","date_gmt":"2023-07-28T05:30:58","guid":{"rendered":"https:\/\/statorials.org\/ja\/%e8%a4%87%e6%95%b0%e3%81%ae-dplyr-%e3%83%86%e3%82%99%e3%83%bc%e3%82%bf%e3%83%95%e3%83%ac%e3%83%bc%e3%83%a0%e3%82%92%e7%b5%90%e5%90%88%e3%81%99%e3%82%8b\/"},"modified":"2023-07-28T05:30:58","modified_gmt":"2023-07-28T05:30:58","slug":"%e8%a4%87%e6%95%b0%e3%81%ae-dplyr-%e3%83%86%e3%82%99%e3%83%bc%e3%82%bf%e3%83%95%e3%83%ac%e3%83%bc%e3%83%a0%e3%82%92%e7%b5%90%e5%90%88%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/statorials.org\/ja\/%e8%a4%87%e6%95%b0%e3%81%ae-dplyr-%e3%83%86%e3%82%99%e3%83%bc%e3%82%bf%e3%83%95%e3%83%ac%e3%83%bc%e3%83%a0%e3%82%92%e7%b5%90%e5%90%88%e3%81%99%e3%82%8b\/","title":{"rendered":"Dplyr \u3092\u4f7f\u7528\u3057\u3066\u8907\u6570\u306e\u30c7\u30fc\u30bf \u30d5\u30ec\u30fc\u30e0\u3092\u7d50\u5408\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p><\/p>\n<hr>\n<p>\u591a\u304f\u306e\u5834\u5408\u3001R \u3067\u8907\u6570\u306e\u30c7\u30fc\u30bf \u30d5\u30ec\u30fc\u30e0\u3092\u7d50\u5408\u3059\u308b\u3053\u3068\u306b\u8208\u5473\u304c\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u5e78\u3044\u306a\u3053\u3068\u306b\u3001\u3053\u308c\u306f<span style=\"color: #000000;\"><a href=\"https:\/\/dplyr.tidyverse.org\/\" target=\"_blank\" rel=\"noopener noreferrer\">dplyr<\/a>\u30d1\u30c3\u30b1\u30fc\u30b8\u306e<\/span><span style=\"color: #000000;\"><a href=\"https:\/\/dplyr.tidyverse.org\/reference\/mutate-joins.html\" target=\"_blank\" rel=\"noopener noreferrer\">left_join()<\/a>\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u7c21\u5358\u306b\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059<\/span>\u3002<\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>library(dplyr)<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u305f\u3068\u3048\u3070\u3001\u6b21\u306e 3 \u3064\u306e\u30c7\u30fc\u30bf \u30d5\u30ec\u30fc\u30e0\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame<\/span>\ndf1 &lt;- data.frame(a = c('a', 'b', 'c', 'd', 'e', 'f'),\n                  b = c(12, 14, 14, 18, 22, 23))\n\ndf2 &lt;- data.frame(a = c('a', 'a', 'a', 'b', 'b', 'b'),\n                  c = c(23, 24, 33, 34, 37, 41))\n\ndf3 &lt;- data.frame(a = c('d', 'e', 'f', 'g', 'h', 'i'),\n                  d = c(23, 24, 33, 34, 37, 41))\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">3 \u3064\u306e\u30c7\u30fc\u30bf \u30d5\u30ec\u30fc\u30e0\u3092\u7d50\u5408\u3059\u308b\u306b\u306f\u30012 \u3064\u306e\u5de6\u7d50\u5408\u3092\u9806\u756a\u306b\u5b9f\u884c\u3059\u308b\u3060\u3051\u3067\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#join the three data frames<\/span>\ndf1 %&gt;%\n    <span style=\"color: #3366ff;\">left_join<\/span> (df2, by='a') %&gt;%\n    <span style=\"color: #3366ff;\">left_join<\/span> (df3, by='a')\n\n   abcd\n1 to 12 23 NA\n2 to 12 24 NA\n3 to 12 33 NA\n4 b 14 34 NA\n5 b 14 37 NA\n6 b 14 41 NA\n7 c 14 NA NA\n8 d 18 NA 23\n9th 22 NA 24\n10 f 23 NA 33\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u3053\u306e\u7d50\u5408\u306e\u7d50\u679c\u3092\u30c7\u30fc\u30bf \u30d5\u30ec\u30fc\u30e0\u3068\u3057\u3066\u4fdd\u5b58\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#join the three data frames and save result as new data frame named all_data<\/span>\nall_data &lt;- df1 %&gt;%\n              <span style=\"color: #3366ff;\">left_join<\/span> (df2, by='a') %&gt;%\n              <span style=\"color: #3366ff;\">left_join<\/span> (df3, by='a')\n\n<span style=\"color: #008080;\">#view summary of resulting data frame\n<\/span>glimpse(all_data)\n\nComments: 10\nVariables: 4\n$ a &lt;chr&gt; \"a\", \"a\", \"a\", \"b\", \"b\", \"b\", \"c\", \"d\", \"e\", \"f\"\n$b&lt;dbl&gt; 12, 12, 12, 14, 14, 14, 14, 18, 22, 23\n$ c &lt;dbl&gt; 23, 24, 33, 34, 37, 41, NA, NA, NA, NA\n$ d &lt;dbl&gt; NA, NA, NA, NA, NA, NA, NA, 23, 24, 33\n<\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u8ffd\u52a0\u30ea\u30bd\u30fc\u30b9<\/strong><\/span><\/h3>\n<p><a href=\"https:\/\/statorials.org\/ja\/\u884c\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30af\u3099\u3059\u308b-r\/\" target=\"_blank\" rel=\"noopener noreferrer\">R \u3067\u884c\u3092\u30d5\u30a3\u30eb\u30bf\u30fc\u3059\u308b\u65b9\u6cd5<\/a><br \/><a href=\"https:\/\/statorials.org\/ja\/-10\/\" target=\"_blank\" rel=\"noopener noreferrer\">R\u3067\u91cd\u8907\u884c\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5<\/a><br \/><a href=\"https:\/\/statorials.org\/ja\/\u30af\u3099\u30eb\u30fc\u30d5\u309a\u30ec\u30b7\u3099\u30e5\u30fc\u30e0\u30c6\u3099\u30fc\u30bfr\/\" target=\"_blank\" rel=\"noopener noreferrer\">R \u3067\u30c7\u30fc\u30bf\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3066\u8981\u7d04\u3059\u308b\u65b9\u6cd5<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u591a\u304f\u306e\u5834\u5408\u3001R \u3067\u8907\u6570\u306e\u30c7\u30fc\u30bf \u30d5\u30ec\u30fc\u30e0\u3092\u7d50\u5408\u3059\u308b\u3053\u3068\u306b\u8208\u5473\u304c\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u5e78\u3044\u306a\u3053\u3068\u306b\u3001\u3053\u308c\u306fdplyr\u30d1\u30c3\u30b1\u30fc\u30b8\u306eleft_join()\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u7c21\u5358\u306b\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 library(dplyr) \u305f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-946","post","type-post","status-publish","format-standard","hentry","category-16"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>dplyr \u3092\u4f7f\u7528\u3057\u3066\u8907\u6570\u306e\u30c7\u30fc\u30bf \u30d5\u30ec\u30fc\u30e0\u3092\u7d50\u5408\u3059\u308b\u65b9\u6cd5 - \u7d71\u8a08<\/title>\n<meta name=\"description\" content=\"R\u3067dplyr\u3092\u4f7f\u3063\u3066\u8907\u6570\u306e\u30c7\u30fc\u30bf\u30d5\u30ec\u30fc\u30e0\u3092\u7d50\u5408\u3059\u308b\u65b9\u6cd5\u3092\u7c21\u5358\u306b\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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