{"id":3784,"date":"2023-07-15T13:57:09","date_gmt":"2023-07-15T13:57:09","guid":{"rendered":"https:\/\/statorials.org\/id\/saya-mendapatkan-nama-kolom\/"},"modified":"2023-07-15T13:57:09","modified_gmt":"2023-07-15T13:57:09","slug":"saya-mendapatkan-nama-kolom","status":"publish","type":"post","link":"https:\/\/statorials.org\/id\/saya-mendapatkan-nama-kolom\/","title":{"rendered":"Cara mendapatkan nama kolom di r (3 metode)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Anda dapat menggunakan metode berikut untuk mendapatkan nama kolom bingkai data di R:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Metode 1: Dapatkan semua nama kolom<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>colnames(df)<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metode 2: Dapatkan nama kolom berdasarkan abjad<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #3366ff;\"><span style=\"color: #000000;\">sort(colnames(df))\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metode 3: Dapatkan nama kolom dengan tipe data tertentu<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #3366ff;\"><span style=\"color: #000000;\">colnames(df[,sapply(df, <span style=\"color: #3366ff;\">is.numeric<\/span> )])\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Contoh berikut menunjukkan cara menggunakan setiap metode dengan bingkai data berikut di R:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <b><span style=\"color: #008080;\">#create data frame\n<\/span>df = data. <span style=\"color: #3366ff;\">frame<\/span> (team=c('A', 'B', 'C', 'D', 'E', 'F'),\n                dots=c(18, 22, 19, 14, 14, 11),\n                assists=c(5, 7, 7, 9, 12, 9),\n                playoffs=c(TRUE, FALSE, FALSE, TRUE, TRUE, TRUE))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  team points assists playoffs\n1 A 18 5 TRUE\n2 B 22 7 FALSE\n3 C 19 7 FALSE\n4 D 14 9 TRUE\n5 E 14 12 TRUE\n6 F 11 9 TRUE<\/b><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Contoh 1: Dapatkan semua nama kolom<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Cara termudah untuk mendapatkan semua nama kolom dalam bingkai data di R adalah dengan menggunakan <strong>colnames()<\/strong> sebagai berikut:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008080;\">#get all column names\n<\/span>colnames(df)\n\n[1] \u201cteam\u201d \u201cpoints\u201d \u201cassists\u201d \u201cplayoffs\u201d<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">Hasilnya adalah sebuah vektor yang berisi empat nama kolom dari frame data.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Contoh 2: Dapatkan nama kolom berdasarkan abjad<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Untuk mendapatkan nama kolom dalam bingkai data berdasarkan abjad, Anda dapat menggunakan fungsi <strong>sort()<\/strong> sebagai berikut:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #3366ff;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#get column names in alphabetical order\n<\/span>sort(colnames(df))\n\n[1] \u201cassists\u201d \u201cplayoffs\u201d \u201cpoints\u201d \u201cteam\u201d<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Hasilnya adalah vektor yang berisi empat nama kolom bingkai data yang diurutkan berdasarkan abjad.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Anda juga dapat menggunakan argumen <strong>descending=TRUE<\/strong> untuk mendapatkan nama kolom dalam urutan abjad terbalik:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #3366ff;\"><span style=\"color: #008080;\">#get column names in reverse alphabetical order<\/span>\n<span style=\"color: #000000;\">sort(colnames(df), decreasing= <span style=\"color: #008000;\">TRUE<\/span> )\n\n[1] \"team\" \"points\" \"playoffs\" \"assists\"<\/span><\/span><\/strong>\n<\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Contoh 3: Dapatkan nama kolom dengan tipe data tertentu<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Anda dapat menggunakan sintaks berikut untuk menampilkan tipe data setiap kolom di DataFrame:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #3366ff;\"><span style=\"color: #008080;\">#view data type of each column<\/span>\n<span style=\"color: #000000;\">str(df)<\/span>\n<span style=\"color: #000000;\">\n'data.frame': 6 obs. of 4 variables:\n $ team: chr \"A\" \"B\" \"C\" \"D\" ...\n $ points: num 18 22 19 14 14 11\n $ assists: num 5 7 7 9 12 9\n $ playoffs: logi TRUE FALSE FALSE TRUE TRUE TRUEt\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Anda kemudian dapat menggunakan fungsi <strong>sapply()<\/strong> untuk hanya mendapatkan nama kolom dengan tipe data tertentu.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Misalnya, kita bisa menggunakan sintaks berikut untuk mendapatkan hanya nama kolom yang memiliki tipe data <b>numerik<\/b> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #3366ff;\"><span style=\"color: #008080;\">#get all columns that have data type of numeric<\/span>\n<span style=\"color: #000000;\">colnames(df[,sapply(df, <span style=\"color: #3366ff;\">is.numeric<\/span> )])\n\n[1] \u201cpoints\u201d \u201cassists\u201d\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Hasilnya adalah vektor nama kolom yang memiliki tipe data numerik.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Sumber daya tambahan<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Tutorial berikut menjelaskan cara melakukan operasi umum lainnya di R:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/id\/r-tambahkan-akhiran-ke-nama-kolom\/\" target=\"_blank\" rel=\"noopener\">Bagaimana cara menambahkan akhiran ke nama kolom di R<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/r-loop-kolom-bingkai-data\/\" target=\"_blank\" rel=\"noopener\">Cara mengulangi nama kolom di R<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/r-menggabungkan-bingkai-data-dengan-nama-kolom\/\" target=\"_blank\" rel=\"noopener\">Cara menggabungkan bingkai data dengan nama kolom di R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Anda dapat menggunakan metode berikut untuk mendapatkan nama kolom bingkai data di R: Metode 1: Dapatkan semua nama kolom colnames(df) Metode 2: Dapatkan nama kolom berdasarkan abjad sort(colnames(df)) Metode 3: Dapatkan nama kolom dengan tipe data tertentu colnames(df[,sapply(df, is.numeric )]) Contoh berikut menunjukkan cara menggunakan setiap metode dengan bingkai data berikut di R: #create data [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Cara mendapatkan nama kolom di R (3 metode) \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"Tutorial ini menjelaskan cara mendapatkan nama kolom dari bingkai data di R, dengan beberapa contoh.\" \/>\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\/id\/saya-mendapatkan-nama-kolom\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta 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