{"id":6584,"date":"2024-03-14T04:27:44","date_gmt":"2024-03-14T04:27:44","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-perform-data-pivot-in-r-language\/"},"modified":"2025-08-02T05:30:57","modified_gmt":"2025-08-02T05:30:57","slug":"how-to-perform-data-pivot-in-r-language","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-perform-data-pivot-in-r-language\/","title":{"rendered":"R dplyr Summarize: Group By &#038; Aggregate Data"},"content":{"rendered":"<p>In R language, you can use the summarize() function in the dplyr package to perform data summarization. Here is a simple example:<\/p>\n<p>If you have a dataset df that contains information such as students&#8217; names, subjects, and grades, and you want to calculate the average grade of each student for each subject, you can use the following code.<\/p>\n<pre class=\"post-pre\"><code>library<span class=\"hljs-punctuation\">(<\/span>dplyr<span class=\"hljs-punctuation\">)<\/span>\r\n\r\ndf <span class=\"hljs-operator\">%&gt;%<\/span>\r\n  group_by<span class=\"hljs-punctuation\">(<\/span>\u59d3\u540d<span class=\"hljs-punctuation\">,<\/span> \u79d1\u76ee<span class=\"hljs-punctuation\">)<\/span> <span class=\"hljs-operator\">%&gt;%<\/span>\r\n  summarize<span class=\"hljs-punctuation\">(<\/span>\u5e73\u5747\u6210\u7ee9 <span class=\"hljs-operator\">=<\/span> mean<span class=\"hljs-punctuation\">(<\/span>\u6210\u7ee9<span class=\"hljs-punctuation\">)<\/span><span class=\"hljs-punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>In the code above, the group_by() function is used to group by name and subject, then the summarize() function calculates the average grade for each group, ultimately obtaining the average grade for each student in each subject.<\/p>\n<p>In addition to the summarize() function, the dplyr package also offers other functions for data manipulation, such as mutate() and filter(). By combining these functions, more complex data manipulation operations can be achieved.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In R language, you can use the summarize() function in the dplyr package to perform data summarization. Here is a simple example: If you have a dataset df that contains information such as students&#8217; names, subjects, and grades, and you want to calculate the average grade of each student for each subject, you can use [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[3784,871,8040,8042,8041],"class_list":["post-6584","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-data-aggregation","tag-group-by","tag-r-dplyr","tag-r-pivot-table","tag-summarize"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>R dplyr Summarize: Group By &amp; Aggregate Data - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn data aggregation in R using dplyr&#039;s summarize() and group_by(). Calculate averages with step-by-step code examples.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-to-perform-data-pivot-in-r-language\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R dplyr Summarize: Group By &amp; Aggregate Data\" \/>\n<meta property=\"og:description\" content=\"Learn data aggregation in R using dplyr&#039;s summarize() and group_by(). 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