{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkanosuke.hatenadiary.jp%2Fentry%2F2015%2F12%2F02%2F180754\" title=\"dplyr:group_by \u306b\u5d4c\u308b - python, R, vim\u3067\u30c7\u30fc\u30bf\u30de\u30a4\u30cb\u30f3\u30b0\" 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":"python, R, vim\u3067\u30c7\u30fc\u30bf\u30de\u30a4\u30cb\u30f3\u30b0","published":"2015-12-02 18:07:54","image_url":null,"categories":[],"author_name":"kanosuke","description":"dplyr:group_by \u306b\u5d4c\u308b kanosuke \u554f\u984c dplyr\u306egroup_by\u3092\u4f7f\u7528\u3057\u3066\u30b0\u30eb\u30fc\u30d7\u5225\u306e\u96c6\u8a08\u51e6\u7406\u3092\u3057\u305f\u304b\u3063\u305f\u306e\u3060\u304c\u30b0\u30eb\u30fc\u30d7\u51e6\u7406\u304c\u50cd\u304b\u305a\u306b\u5d4c\u3063\u305f\u3002 \u554f\u984c\u4f8b library(dplyr) library(plyr) mtcars %>% group_by(vs, am) %>% summarise(max = max(mpg)) ## max ## 1 33.9 \u30b0\u30eb\u30fc\u30d7\u5225\u306e\u6700\u5927\u5024\u3092\u6c42\u3081\u305f\u3044\u306e\u306b\u4e00\u3064\u306e\u5024\u3057\u304b\u5f97\u3089\u308c\u306a\u3044\u3002 \u691c\u7d22 \u201cdplyr group_by not working\u201d \u691c\u7d22\u30ef\u30fc\u30c9\u300cdplyr group_by not working\u300d\u3067\u691c\u7d22\u3057\u3066\u60c5\u5831\u3092\u5f97\u305f\u3002 h\u2026","version":"1.0","provider_name":"Hatena Blog","title":"dplyr:group_by \u306b\u5d4c\u308b","author_url":"https://blog.hatena.ne.jp/kanosuke/","url":"https://kanosuke.hatenadiary.jp/entry/2015/12/02/180754","height":"190","width":"100%","provider_url":"https://hatena.blog","blog_url":"https://kanosuke.hatenadiary.jp/","type":"rich"}