{"id":1086,"date":"2023-07-27T17:28:48","date_gmt":"2023-07-27T17:28:48","guid":{"rendered":"https:\/\/statorials.org\/id\/r-loop-kolom-bingkai-data\/"},"modified":"2023-07-27T17:28:48","modified_gmt":"2023-07-27T17:28:48","slug":"r-loop-kolom-bingkai-data","status":"publish","type":"post","link":"https:\/\/statorials.org\/id\/r-loop-kolom-bingkai-data\/","title":{"rendered":"Cara mengulangi nama kolom di r (dengan contoh)"},"content":{"rendered":"

<\/p>\n

\n

Seringkali Anda mungkin ingin mengulangi nama kolom dari bingkai data di R dan melakukan operasi tertentu pada setiap kolom. Ada dua cara umum untuk melakukan ini:
<\/span><\/p>\n

Metode 1: Gunakan For Loop<\/strong><\/span><\/p>\n

 for (i in<\/span> colnames(df)){\n   some operation<\/span>\n}\n<\/strong><\/pre>\n
 Metode 2: Gunakan sapply()<\/strong><\/span><\/p>\n
 sapply(df, some operation<\/span> )<\/strong><\/pre>\n
 Tutorial ini menunjukkan contoh bagaimana menggunakan masing-masing metode ini dalam praktik.<\/span><\/p>\n
 Metode 1: Gunakan For Loop<\/strong><\/span><\/h3>\n
 Kode berikut menunjukkan cara melakukan perulangan melalui nama kolom bingkai data menggunakan perulangan for<\/strong> dan menampilkan nilai rata-rata setiap kolom:<\/span><\/p>\n
 #create data frame<\/span>\ndf <- data.frame(var1=c(1, 3, 3, 4, 5),\n                 var2=c(7, 7, 8, 3, 2),\n                 var3=c(3, 3, 6, 6, 8),\n                 var4=c(1, 1, 2, 8, 9))\n\n#view data frame<\/span>\ndf\n\n  var1 var2 var3 var4\n1 1 7 3 1\n2 3 7 3 1\n3 3 8 6 2\n4 4 3 6 8\n5 5 2 8 9\n\n#loop through each column and print mean of column<\/span>\nfor (i in<\/span> colnames(df)){\n    print( mean<\/span> (df[[i]]))\n}\n\n[1] 3.2\n[1] 5.4\n[1] 5.2\n[1] 4.2\n<\/strong><\/pre>\n
 Metode 2: Gunakan sapply()<\/strong><\/span><\/h3>\n
 Kode berikut menunjukkan cara melakukan iterasi melalui nama kolom bingkai data menggunakan sapply()<\/strong> dan menampilkan nilai rata-rata setiap kolom:<\/span><\/p>\n
 #create data frame<\/span>\ndf <- data.frame(var1=c(1, 3, 3, 4, 5),\n                 var2=c(7, 7, 8, 3, 2),\n                 var3=c(3, 3, 6, 6, 8),\n                 var4=c(1, 1, 2, 8, 9))\n\n#view data frame<\/span>\ndf\n\n  var1 var2 var3 var4\n1 1 7 3 1\n2 3 7 3 1\n3 3 8 6 2\n4 4 3 6 8\n5 5 2 8 9\n\n#loop through each column and print mean of column<\/span>\nsapply(df, mean<\/span> )\n\nvar1 var2 var3 var4 \n 3.2 5.4 5.2 4.2<\/strong><\/pre>\n
 Perhatikan bahwa kedua metode memberikan hasil yang sama.<\/span><\/p>\n
 Terkait:<\/span><\/strong> Panduan untuk apply(), lapply(), sapply(), dan tapply() di R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Seringkali Anda mungkin ingin mengulangi nama kolom dari bingkai data di R dan melakukan operasi tertentu pada setiap kolom. Ada dua cara umum untuk melakukan ini: Metode 1: Gunakan For Loop for (i in colnames(df)){ some operation } Metode 2: Gunakan sapply() sapply(df, some operation ) Tutorial ini menunjukkan contoh bagaimana menggunakan masing-masing metode ini […]<\/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":"\nCara Mengulangi Nama Kolom di R (Dengan Contoh)<\/title>\n<meta name=\"description\" content=\"Tutorial ini menjelaskan cara membaca hanya kolom yang dipilih dari file CSV di R dan menyertakan 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\/r-loop-kolom-bingkai-data\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cara Mengulangi Nama Kolom di R (Dengan Contoh)\" \/>\n<meta property=\"og:description\" content=\"Tutorial ini menjelaskan cara membaca hanya kolom yang dipilih dari file CSV di R dan menyertakan beberapa contoh.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/id\/r-loop-kolom-bingkai-data\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-27T17:28:48+00:00\" \/>\n<meta name=\"author\" content=\"Benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Ditulis oleh\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimasi waktu membaca\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 menit\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/id\/r-loop-kolom-bingkai-data\/\",\"url\":\"https:\/\/statorials.org\/id\/r-loop-kolom-bingkai-data\/\",\"name\":\"Cara Mengulangi Nama Kolom di R (Dengan Contoh)\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/id\/#website\"},\"datePublished\":\"2023-07-27T17:28:48+00:00\",\"dateModified\":\"2023-07-27T17:28:48+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/3d17a1160dd2d052b7c78e502cb9ec81\"},\"description\":\"Tutorial ini menjelaskan cara membaca hanya kolom yang dipilih dari file CSV di R dan menyertakan beberapa contoh.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/id\/r-loop-kolom-bingkai-data\/#breadcrumb\"},\"inLanguage\":\"id\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/id\/r-loop-kolom-bingkai-data\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/id\/r-loop-kolom-bingkai-data\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/statorials.org\/id\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Cara mengulangi nama kolom di r (dengan contoh)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/id\/#website\",\"url\":\"https:\/\/statorials.org\/id\/\",\"name\":\"Statorials\",\"description\":\"Panduan anda untuk kompetensi statistik!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/id\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"id\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/3d17a1160dd2d052b7c78e502cb9ec81\",\"name\":\"Benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"id\",\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/image\/\",\"url\":\"http:\/\/statorials.org\/id\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"http:\/\/statorials.org\/id\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin anderson\"},\"description\":\"Halo, saya Benjamin, pensiunan profesor statistika yang menjadi guru Statorial yang berdedikasi. 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