{"id":1808,"date":"2023-07-24T21:44:34","date_gmt":"2023-07-24T21:44:34","guid":{"rendered":"https:\/\/statorials.org\/ja\/dplyr-case_when\/"},"modified":"2023-07-24T21:44:34","modified_gmt":"2023-07-24T21:44:34","slug":"dplyr-case_when","status":"publish","type":"post","link":"https:\/\/statorials.org\/ja\/dplyr-case_when\/","title":{"rendered":"Dplyr \u3067 case_when() \u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">R \u306e<a href=\"https:\/\/dplyr.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">dplyr<\/a>\u30d1\u30c3\u30b1\u30fc\u30b8\u306e<strong>case_when()<\/strong>\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001\u65e2\u5b58\u306e\u5909\u6570\u304b\u3089\u65b0\u3057\u3044\u5909\u6570\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u3053\u306e\u95a2\u6570\u306f\u6b21\u306e\u57fa\u672c\u69cb\u6587\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #000000;\"><span style=\"color: #993300;\">library<\/span> (dplyr)\n<\/span>\ndf %&gt;%\n  <span style=\"color: #3366ff;\">mutate<\/span> (new_var = <span style=\"color: #3366ff;\">case_when<\/span> (var1 &lt; 15 ~ ' <span style=\"color: #ff0000;\">low<\/span> ',\n                             var2 &lt; 25 ~ ' <span style=\"color: #ff0000;\">med<\/span> ',\n                             TRUE ~ ' <span style=\"color: #ff0000;\">high<\/span> '))\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>TRUE \u306f<\/strong>\u300celse\u300d\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3068\u540c\u7b49\u3067\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6b21\u306e\u4f8b\u306f\u3001\u6b21\u306e\u30c7\u30fc\u30bf \u30d5\u30ec\u30fc\u30e0\u3067\u3053\u306e\u95a2\u6570\u3092\u5b9f\u969b\u306b\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame\n<\/span>df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (player = c('AJ', 'Bob', 'Chad', 'Dan', 'Eric', 'Frank'),\n                 position = c('G', 'F', 'F', 'G', 'C', NA),\n                 points = c(12, 15, 19, 22, 32, NA),\n                 assists = c(5, 7, 7, 12, 11, NA))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  player position points assists\n1 AJ G 12 5\n2 Bob F 15 7\n3 Chad F 19 7\n4 Dan G 22 12\n5 Eric C 32 11\n6 Frank NA NA NA<\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u4f8b 1: \u65e2\u5b58\u306e\u5909\u6570\u304b\u3089\u65b0\u3057\u3044\u5909\u6570\u3092\u4f5c\u6210\u3059\u308b<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u6b21\u306e\u30b3\u30fc\u30c9\u306f\u3001\u5024\u304c<strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\u5217\u304b\u3089\u5c0e\u51fa\u3055\u308c\u308b\u3001 <strong>quality<\/strong>\u3068\u3044\u3046\u65b0\u3057\u3044\u5909\u6570\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df %&gt;%\n<span style=\"color: #3366ff;\">mutate<\/span> (quality = <span style=\"color: #3366ff;\">case_when<\/span> (points &gt; 20 ~ ' <span style=\"color: #ff0000;\">high<\/span> ',\n                             points &gt; 15 ~ ' <span style=\"color: #ff0000;\">med<\/span> ',\n                             TRUE ~ ' <span style=\"color: #ff0000;\">low<\/span> ' ))\n\n  player position points assists quality\n1 AJ G 12 5 low\n2 Bob F 15 7 low\n3 Chad F 19 7 med\n4 Dan G 22 12 high\n5 Eric C 32 11 high\n6 Frank NA NA NA low\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>case_when()<\/strong>\u95a2\u6570\u304c\u65b0\u3057\u3044\u5217\u306e\u5024\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u3092\u6b63\u78ba\u306b\u793a\u3057\u307e\u3059\u3002<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">\u30dd\u30a4\u30f3\u30c8\u5217\u306e\u5024\u304c 20 \u3088\u308a\u5927\u304d\u3044\u5834\u5408\u3001\u54c1\u8cea\u5217\u306e\u5024\u306f\u300c\u9ad8\u300d\u306b\u306a\u308a\u307e\u3059\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u3001\u30dd\u30a4\u30f3\u30c8\u5217\u306e\u5024\u304c 15 \u3088\u308a\u5927\u304d\u3044\u5834\u5408\u3001\u54c1\u8cea\u5217\u306e\u5024\u306f\u300c\u4e2d\u300d\u306b\u306a\u308a\u307e\u3059\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u3001\u30dd\u30a4\u30f3\u30c8\u5217\u306e\u5024\u304c 15 \u4ee5\u4e0b (\u307e\u305f\u306f NA \u306a\u3069\u306e\u6b20\u640d\u5024) \u306e\u5834\u5408\u3001\u54c1\u8cea\u5217\u306e\u5024\u306f\u300c\u4f4e\u300d\u306b\u306a\u308a\u307e\u3059\u3002<\/span><\/li>\n<\/ul>\n<h3><span style=\"color: #000000;\"><strong>\u4f8b 2: \u8907\u6570\u306e\u5909\u6570\u304b\u3089\u65b0\u3057\u3044\u5909\u6570\u3092\u4f5c\u6210\u3059\u308b<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u6b21\u306e\u30b3\u30fc\u30c9\u306f\u3001\u5024\u304c<strong>\u30dd\u30a4\u30f3\u30c8\u5217<\/strong>\u3068<strong>\u30a2\u30b7\u30b9\u30c8<\/strong>\u5217\u304b\u3089\u5c0e\u51fa\u3055\u308c\u308b\u3001 <strong>quality<\/strong>\u3068\u3044\u3046\u65b0\u3057\u3044\u5909\u6570\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df %&gt;%\n<span style=\"color: #3366ff;\">mutate<\/span> (quality = <span style=\"color: #3366ff;\">case_when<\/span> (points &gt; 15 &amp; assists &gt; 10 ~ ' <span style=\"color: #ff0000;\">great<\/span> ',\n                             points &gt; 15 &amp; assists &gt; 5 ~ ' <span style=\"color: #ff0000;\">good<\/span> ',\n                             TRUE ~ ' <span style=\"color: #ff0000;\">average<\/span> ' ))\n\n  player position points assists quality\n1 AJ G 12 5 average\n2 Bob F 15 7 average\n3 Chad F 19 7 good\n4 Dan G 22 12 great\n5 Eric C 32 11 great\n6 Frank NA NA NA average\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\"><strong>is.na()<\/strong>\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001\u6587\u5b57\u5217\u3092 NA \u5024\u306b\u660e\u793a\u7684\u306b\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u3082\u3067\u304d\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df %&gt;%\n<span style=\"color: #3366ff;\">mutate<\/span> (quality = <span style=\"color: #3366ff;\">case_when<\/span> (is. <span style=\"color: #3366ff;\">na<\/span> (points) ~ ' <span style=\"color: #ff0000;\">missing<\/span> ',\n                             points &gt; 15 &amp; assists &gt; 10 ~ ' <span style=\"color: #ff0000;\">great<\/span> ',\n                             points &gt; 15 &amp; assists &gt; 5 ~ ' <span style=\"color: #ff0000;\">good<\/span> ',\n                             TRUE ~ ' <span style=\"color: #ff0000;\">average<\/span> ' ))\n\n  player position points assists quality\n1 AJ G 12 5 average\n2 Bob F 15 7 average\n3 Chad F 19 7 good\n4 Dan G 22 12 great\n5 Eric C 32 11 great\n6 Frank NA NA NA missing<\/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\u6574\u7406\u3059\u308b\/\" target=\"_blank\" rel=\"noopener\">R\u3067\u7dda\u3092\u914d\u7f6e\u3059\u308b\u65b9\u6cd5<\/a><br \/><a href=\"https:\/\/statorials.org\/ja\/\u30af\u3099\u30eb\u30fc\u30d5\u309a-r-\u3053\u3099\u3068\u306b\u30ab\u30a6\u30f3\u30c8\u3059\u308b\/\" target=\"_blank\" rel=\"noopener\">R \u3067\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u89b3\u6e2c\u5024\u3092\u30ab\u30a6\u30f3\u30c8\u3059\u308b\u65b9\u6cd5<\/a><br \/><a href=\"https:\/\/statorials.org\/ja\/dplyr-\u6587\u5b57\u5217\u3092\u542b\u3080\u884c\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30af\u3099\u3059\u308b\/\" target=\"_blank\" rel=\"noopener\">R\u3067\u7279\u5b9a\u306e\u6587\u5b57\u5217\u3092\u542b\u3080\u884c\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u65b9\u6cd5<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>R \u306edplyr\u30d1\u30c3\u30b1\u30fc\u30b8\u306ecase_when()\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001\u65e2\u5b58\u306e\u5909\u6570\u304b\u3089\u65b0\u3057\u3044\u5909\u6570\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002 \u3053\u306e\u95a2\u6570\u306f\u6b21\u306e\u57fa\u672c\u69cb\u6587\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002 library (dplyr) df %&gt;% mutate (new [&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-1808","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 \u3067 case_when() \u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5 \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001R \u306e dplyr \u30d1\u30c3\u30b1\u30fc\u30b8\u306e case_when() \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3092\u3044\u304f\u3064\u304b\u306e\u4f8b\u3068\u3068\u3082\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\" href=\"https:\/\/statorials.org\/ja\/dplyr-case_when\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"dplyr \u3067 case_when() \u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5 \u2013 Statorials\" \/>\n<meta property=\"og:description\" content=\"\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001R \u306e dplyr \u30d1\u30c3\u30b1\u30fc\u30b8\u306e case_when() \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3092\u3044\u304f\u3064\u304b\u306e\u4f8b\u3068\u3068\u3082\u306b\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" 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