{"provider_name":"Hatena Blog","url":"https://knknkn.hatenablog.com/entry/2020/04/12/170636","blog_url":"https://knknkn.hatenablog.com/","version":"1.0","type":"rich","title":"across\u3092\u7528\u3044\u3066\u3001R\u3067\u5217\u3054\u3068\u306b\u5225\u306e\u96c6\u7d04\u95a2\u6570\u3092\u307e\u3068\u3081\u3066\u9069\u5fdc\u3055\u305b\u308b","author_name":"chito_ng","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fknknkn.hatenablog.com%2Fentry%2F2020%2F04%2F12%2F170636\" title=\"across\u3092\u7528\u3044\u3066\u3001R\u3067\u5217\u3054\u3068\u306b\u5225\u306e\u96c6\u7d04\u95a2\u6570\u3092\u307e\u3068\u3081\u3066\u9069\u5fdc\u3055\u305b\u308b - \u307e\u305a\u306f\u874b\u306e\u7ffc\u304b\u3089\u3002\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"\u307e\u305a\u306f\u874b\u306e\u7ffc\u304b\u3089\u3002","provider_url":"https://hatena.blog","height":"190","author_url":"https://blog.hatena.ne.jp/chito_ng/","published":"2020-04-12 17:06:36","image_url":null,"width":"100%","categories":["R","\u4f7f\u3044\u65b9\u30e1\u30e2(\u30e9\u30a4\u30d6\u30e9\u30ea)"],"description":"dplyr1.0.0\u304b\u3089\u8ffd\u52a0\u3055\u308c\u308bacross\u3067\u6761\u4ef6\u306b\u5f53\u3066\u306f\u307e\u308b\u5217\u306b\u5bfe\u3057\u3066\u500b\u5225\u306b\u96c6\u7d04\u95a2\u6570\u306e\u9069\u7528\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3002 \u4eca\u307e\u3067\u3082summarise_at\u3067\u3082\u3067\u304d\u305f\u304c\u3053\u306e\u5834\u5408\u306f1\u6761\u4ef6\u306b\u3057\u304b\u9069\u7528\u3067\u304d\u306a\u304b\u3063\u305f\u304c\u3001across\u3067\u306f\u8907\u6570\u6761\u4ef6\u3067\u306e\u9069\u7528\u304c\u53ef\u80fd\u3002 \u4f8b summarise_at\u3067\u306fSepal\u3067\u59cb\u307e\u308b\u5834\u5408\u306fmean\u3001Petal\u3067\u59cb\u307e\u308b\u5834\u5408\u306fsum\u3092\u9069\u7528\u3057\u3066\u3044\u308b\u3002\u307e\u3068\u3081\u30661\u56de\u3067\u306f\u3067\u304d\u306a\u3044\u306e\u30672\u56de\u306b\u5206\u3051\u308b\u304b\u3001summarise_all\u3067\u307e\u3068\u3081\u3066\u51fa\u3059\u5fc5\u8981\u304c\u3042\u308b\u3002 iris %>% group_by(Species) %>% summarise_at(vars(starts_with(\"Sepal\")), \u2026"}