{"id":3341,"date":"2023-07-18T00:24:06","date_gmt":"2023-07-18T00:24:06","guid":{"rendered":"https:\/\/statorials.org\/nl\/pandas-dag-van-de-week\/"},"modified":"2023-07-18T00:24:06","modified_gmt":"2023-07-18T00:24:06","slug":"pandas-dag-van-de-week","status":"publish","type":"post","link":"https:\/\/statorials.org\/nl\/pandas-dag-van-de-week\/","title":{"rendered":"Hoe de dag van de week in panda&#39;s te vinden"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">U kunt de volgende methoden gebruiken om de dag van de week in panda&#8217;s te vinden:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Methode 1: Vind de dag van de week als een geheel getal<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df[' <span style=\"color: #ff0000;\">date_column<\/span> ']. <span style=\"color: #3366ff;\">dt<\/span> . <span style=\"color: #3366ff;\">weekend\n<\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Methode 2: Zoek de dag van de week als kanaalnaam<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df[' <span style=\"color: #ff0000;\">date_column<\/span> ']. <span style=\"color: #3366ff;\">dt<\/span> . <span style=\"color: #3366ff;\">day_name<\/span> ()\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">De volgende voorbeelden laten zien hoe u elke methode in de praktijk kunt gebruiken met de volgende panda&#8217;s DataFrame:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd\n\n<span style=\"color: #008080;\">#createDataFrame<\/span>\ndf = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">date<\/span> ': pd. <span style=\"color: #3366ff;\">date_range<\/span> (start='1\/5\/2022', freq='D', periods= <span style=\"color: #008000;\">10<\/span> ),\n                   ' <span style=\"color: #ff0000;\">sales<\/span> ': [6, 8, 9, 5, 4, 8, 8, 3, 5, 9]})\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span><span style=\"color: #008000;\">print<\/span> (df)\n\n        dirty date\n0 2022-01-05 6\n1 2022-01-06 8\n2 2022-01-07 9\n3 2022-01-08 5\n4 2022-01-09 4\n5 2022-01-10 8\n6 2022-01-11 8\n7 2022-01-12 3\n8 2022-01-13 5\n9 2022-01-14 9\n<\/strong><\/span><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Voorbeeld 1: Zoek de dag van de week als een geheel getal<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">De volgende code laat zien hoe u een nieuwe kolom aan het DataFrame toevoegt, waarin de dag van de week in de <strong>datumkolom<\/strong> als een geheel getal wordt weergegeven:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008080;\">#add new column that displays day of week as integer\n<span style=\"color: #000000;\">df[' <span style=\"color: #ff0000;\">day_of_week<\/span> '] = df[' <span style=\"color: #ff0000;\">date<\/span> ']. <span style=\"color: #3366ff;\">dt<\/span> . <span style=\"color: #3366ff;\">weekend\n<\/span><\/span>\n#view updated DataFrame\n<span style=\"color: #000000;\"><span style=\"color: #008000;\">print<\/span> (df)\n\n        date sales day_of_week\n0 2022-01-05 6 2\n1 2022-01-06 8 3\n2 2022-01-07 9 4\n3 2022-01-08 5 5\n4 2022-01-09 4 6\n5 2022-01-10 8 0\n6 2022-01-11 8 1\n7 2022-01-12 3 2\n8 2022-01-13 5 3\n9 2022-01-14 9 4<\/span><\/span><\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">In de nieuwe kolom <strong>day_of_week<\/strong> wordt de dag van de week weergegeven waarbij:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>0<\/strong> : maandag<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>1<\/strong> : dinsdag<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>2<\/strong> : woensdag<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>3<\/strong> : Donderdag<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>4<\/strong> : vrijdag<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>5<\/strong> : zaterdag<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>6<\/strong> : zondag<\/span><\/li>\n<\/ul>\n<h2> <span style=\"color: #000000;\"><strong>Voorbeeld 2: Zoek de dag van de week als kanaalnaam<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">De volgende code laat zien hoe u een nieuwe kolom aan het DataFrame toevoegt, waarin de dag van de week in de <strong>datumkolom<\/strong> als een geheel getal wordt weergegeven:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008080;\">#add new column that displays day of week as string name\n<span style=\"color: #000000;\">df[' <span style=\"color: #ff0000;\">day_of_week<\/span> '] = df[' <span style=\"color: #ff0000;\">date<\/span> ']. <span style=\"color: #3366ff;\">dt<\/span> . <span style=\"color: #3366ff;\">day_name<\/span> ()\n\n<span style=\"color: #008080;\">#view updated DataFrame\n<\/span><span style=\"color: #008000;\">print<\/span> (df)\n\n        date sales day_of_week\n0 2022-01-05 6 Wednesday\n1 2022-01-06 8 Thursday\n2 2022-01-07 9 Friday\n3 2022-01-08 5 Saturday\n4 2022-01-09 4 Sunday\n5 2022-01-10 8 Monday\n6 2022-01-11 8 Tuesday\n7 2022-01-12 3 Wednesday\n8 2022-01-13 5 Thursday\n9 2022-01-14 9 Friday<\/span><\/span><\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">In de nieuwe kolom <strong>day_of_week<\/strong> wordt de dag van de week weergegeven als tekenreeksnaam.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Aanvullende bronnen<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">In de volgende tutorials wordt uitgelegd hoe u andere veelvoorkomende bewerkingen in panda&#8217;s kunt uitvoeren:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/nl\/groep-pandas-per-week\/\" target=\"_blank\" rel=\"noopener\">Groeperen op week in Pandas DataFrame<\/a><br \/> <a href=\"https:\/\/statorials.org\/nl\/groep-pandas-per-maand\/\" target=\"_blank\" rel=\"noopener\">Groeperen op maand in Pandas DataFrame<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>U kunt de volgende methoden gebruiken om de dag van de week in panda&#8217;s te vinden: Methode 1: Vind de dag van de week als een geheel getal df[&#8218; date_column &#8218;]. dt . weekend Methode 2: Zoek de dag van de week als kanaalnaam df[&#8218; date_column &#8218;]. dt . day_name () De volgende voorbeelden laten [&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-3341","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>Hoe de dag van de week in panda&#039;s te vinden \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"In deze tutorial wordt uitgelegd hoe u dag van de weekwaarden kunt vinden in een Panda DataFrame, 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\/pandas-dag-van-de-week\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hoe de dag van de week in panda&#039;s te vinden \u2013 Statorials\" \/>\n<meta property=\"og:description\" content=\"In deze tutorial wordt uitgelegd hoe u dag van de weekwaarden kunt vinden in een Panda DataFrame, met verschillende voorbeelden.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/nl\/pandas-dag-van-de-week\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-18T00:24:06+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\/pandas-dag-van-de-week\/\",\"url\":\"https:\/\/statorials.org\/nl\/pandas-dag-van-de-week\/\",\"name\":\"Hoe de dag van de week in panda&#39;s te vinden \u2013 Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/nl\/#website\"},\"datePublished\":\"2023-07-18T00:24:06+00:00\",\"dateModified\":\"2023-07-18T00:24:06+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\"},\"description\":\"In deze tutorial wordt uitgelegd hoe u dag van de weekwaarden kunt vinden in een Panda DataFrame, met verschillende voorbeelden.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/nl\/pandas-dag-van-de-week\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/nl\/pandas-dag-van-de-week\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/nl\/pandas-dag-van-de-week\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Thuis\",\"item\":\"https:\/\/statorials.org\/nl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Hoe de dag van de week in panda&#39;s te vinden\"}]},{\"@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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