{"id":1230,"date":"2023-07-27T05:12:59","date_gmt":"2023-07-27T05:12:59","guid":{"rendered":"https:\/\/statorials.org\/nl\/voer-gegevens-in-r-in\/"},"modified":"2023-07-27T05:12:59","modified_gmt":"2023-07-27T05:12:59","slug":"voer-gegevens-in-r-in","status":"publish","type":"post","link":"https:\/\/statorials.org\/nl\/voer-gegevens-in-r-in\/","title":{"rendered":"Handmatig ruwe gegevens invoeren in r"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">R is een van de populairste programmeertalen voor het werken met data. Maar voordat we met gegevens kunnen werken, moeten we deze daadwerkelijk in R importeren!<\/span><\/p>\n<p> <span style=\"color: #000000;\">Als uw gegevens al in een CSV- of Excel-bestand staan, kunt u de stappen in deze tutorials volgen om deze in R te importeren:<\/span><\/p>\n<ul>\n<li> <a href=\"https:\/\/statorials.org\/nl\/csv-importeren-in-r\/\" target=\"_blank\" rel=\"noopener noreferrer\">CSV-bestanden importeren in R<\/a><\/li>\n<li> <a href=\"https:\/\/statorials.org\/nl\/excel-importeren-in-r\/\" target=\"_blank\" rel=\"noopener noreferrer\">Excel-bestanden importeren in R<\/a><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Soms wilt u echter handmatig <a href=\"https:\/\/statorials.org\/nl\/ruwe-data\/\" target=\"_blank\" rel=\"noopener\">ruwe gegevens<\/a> in R invoeren. In deze tutorial wordt uitgelegd hoe u dit doet.<\/span><\/p>\n<h3> <strong>Voer een vector in<\/strong><\/h3>\n<p> <span style=\"color: #000000;\">We kunnen de volgende syntaxis gebruiken om een enkele vector van numerieke waarden in R in te voeren:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create vector of numeric values<\/span>\nnumeric_values &lt;- c(1, 3, 5, 8, 9)\n\n<span style=\"color: #008080;\">#display class of vector\n<\/span>class(numeric_values)\n\n[1] \"digital\"\n<span style=\"color: #008080;\">#display vector of numeric values<\/span>\nnumeric_values\n\n[1] 1 3 5 8 9\n\n<span style=\"color: #008080;\">#return second element in vector<\/span>\nnumeric_values[4]\n\n[1] 8\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">We kunnen dezelfde syntaxis gebruiken om een vector van tekenwaarden in te voeren:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create vector of character values<\/span>\nchar_values &lt;- c(\"Bob\", \"Mike\", \"Tony\", \"Andy\")\n\n<span style=\"color: #008080;\">#display class of vector\n<\/span>class(char_values)\n\n[1] \u201ccharacter\u201d\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Voer een datablok in<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">We kunnen de volgende syntaxis gebruiken om een dataframe met waarden in R in te voeren:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame\n<span style=\"color: #000000;\">df &lt;- data.frame(team=c(\"A\", \"A\", \"B\", \"B\", \"C\"),\n                 dots=c(12, 15, 17, 24, 27),\n                 assists=c(4, 7, 7, 8, 12))\n\n<span style=\"color: #008080;\">#display data frame\n<\/span>df\n\n  team points assists\n1 to 12 4\n2 to 15 7\n3 B 17 7\n4 B 24 8\n5 C 27 12\n\n<span style=\"color: #008080;\">#display class of df\n<\/span>class(df)\n\n[1] \"data.frame\"\n\n<span style=\"color: #008080;\">#return value in fourth row and third column\n<\/span>df[4, 3]\n\n[1] 8\n<\/span><\/span><\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Voer een matrix in<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">We kunnen de volgende syntaxis gebruiken om een matrix van waarden in R in te voeren:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create matrix with two columns and five rows<span style=\"color: #000000;\">\ndots=c(12, 15, 17, 24, 27)\nassists=c(4, 7, 7, 8, 12)\n\n<span style=\"color: #008080;\">#column bind the two vectors together to create a matrix\n<\/span>mat &lt;- cbind(points, assists)\n\n<span style=\"color: #008080;\">#display matrix\n<\/span>mast\n\n     assist points\n[1,] 12 4\n[2,] 15 7\n[3,] 17 7\n[4,] 24 8\n[5,] 27 12\n\n<span style=\"color: #008080;\">#display class of mat\n<\/span>class(mat)\n\n[1] \"matrix\"\n\n<span style=\"color: #008080;\">#return value in fourth row and second column<\/span>\nmat[4, 2]\n\nassists \n      8\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><em><strong>Opmerking:<\/strong> Voor een matrix moet elke kolom van hetzelfde type zijn, in tegenstelling tot dataframes.<\/em><\/span><\/p>\n<p> <span style=\"color: #000000;\">Meer R-tutorials vindt u hier .<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>R is een van de populairste programmeertalen voor het werken met data. Maar voordat we met gegevens kunnen werken, moeten we deze daadwerkelijk in R importeren! Als uw gegevens al in een CSV- of Excel-bestand staan, kunt u de stappen in deze tutorials volgen om deze in R te importeren: CSV-bestanden importeren in R Excel-bestanden [&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":[],"class_list":["post-1230","post","type-post","status-publish","format-standard","hentry","category-gids"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Handmatig ruwe gegevens invoeren in R - Statorials<\/title>\n<meta name=\"description\" content=\"In deze tutorial wordt uitgelegd hoe u handmatig ruwe gegevens in R invoert, met verschillende voorbeelden.\" \/>\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\/nl\/voer-gegevens-in-r-in\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Handmatig ruwe gegevens invoeren in R - Statorials\" \/>\n<meta property=\"og:description\" content=\"In deze tutorial wordt uitgelegd hoe u handmatig ruwe gegevens in R invoert, met verschillende voorbeelden.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/nl\/voer-gegevens-in-r-in\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-27T05:12:59+00:00\" \/>\n<meta name=\"author\" content=\"Dr.benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Verfasst von\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr.benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Gesch\u00e4tzte Lesezeit\" \/>\n\t<meta name=\"twitter:data2\" content=\"2\u00a0Minuten\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/nl\/voer-gegevens-in-r-in\/\",\"url\":\"https:\/\/statorials.org\/nl\/voer-gegevens-in-r-in\/\",\"name\":\"Handmatig ruwe gegevens invoeren in R - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/nl\/#website\"},\"datePublished\":\"2023-07-27T05:12:59+00:00\",\"dateModified\":\"2023-07-27T05:12:59+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\"},\"description\":\"In deze tutorial wordt uitgelegd hoe u handmatig ruwe gegevens in R invoert, met verschillende voorbeelden.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/nl\/voer-gegevens-in-r-in\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/nl\/voer-gegevens-in-r-in\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/nl\/voer-gegevens-in-r-in\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Thuis\",\"item\":\"https:\/\/statorials.org\/nl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Handmatig ruwe gegevens invoeren in r\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/nl\/#website\",\"url\":\"https:\/\/statorials.org\/nl\/\",\"name\":\"Statorials\",\"description\":\"Uw gids voor statistische competentie\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/nl\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"de\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\",\"name\":\"Dr.benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"de\",\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/image\/\",\"url\":\"http:\/\/statorials.org\/nl\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"http:\/\/statorials.org\/nl\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Dr.benjamin anderson\"},\"description\":\"Ik ben Benjamin, een gepensioneerde hoogleraar statistiek die nu een toegewijde Statorials-lesgever is. 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