{"id":1900,"date":"2023-07-24T13:00:19","date_gmt":"2023-07-24T13:00:19","guid":{"rendered":"https:\/\/statorials.org\/pl\/przekonwertuj-ciag-na-datetime-w-r\/"},"modified":"2023-07-24T13:00:19","modified_gmt":"2023-07-24T13:00:19","slug":"przekonwertuj-ciag-na-datetime-w-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/przekonwertuj-ciag-na-datetime-w-r\/","title":{"rendered":"Jak przekonwertowa\u0107 ci\u0105g na datetime w r"},"content":{"rendered":"

<\/p>\n

\n

Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni, aby przekonwertowa\u0107 ci\u0105g na dat\u0119\/godzin\u0119 w R:<\/span><\/p>\n

 as. POSIXct<\/span> (string_name, format=\" %Y-%m-%d %H:%M:%S<\/span> \", tz=\" UTC<\/span> \")\n<\/strong><\/pre>\n
 Poni\u017csze przyk\u0142ady pokazuj\u0105, jak zastosowa\u0107 t\u0119 sk\u0142adni\u0119 w praktyce:<\/span><\/p>\n
 Przyk\u0142ad 1: Konwertuj ci\u0105g na DateTime<\/strong><\/span><\/h3>\n
 Poni\u017cszy kod pokazuje, jak przekonwertowa\u0107 pojedynczy ci\u0105g znak\u00f3w w j\u0119zyku R na format datetime:<\/span><\/p>\n
 #define string variable<\/span>\nstring_x <- \" 2020-01-01 14:45:18<\/span> \"\n\n#convert string variable to datetime variable\n<\/span>datetime_x <- as. POSIXct<\/span> (string_x, format=\" %Y-%m-%d %H:%M:%S<\/span> \", tz=\" UTC<\/span> \")\n\n#view new datetime variable\n<\/span>datetime_x\n\n[1] \"2020-01-01 14:45:18 UTC\"\n\n#view class of datetime variable \n<\/span>class(datetime_x)\n\n[1] \u201cPOSIXct\u201d \u201cPOSIXt\u201d \n<\/strong><\/pre>\n
 Przyk\u0142ad 2: Konwertuj kolumn\u0119 ci\u0105g\u00f3w na warto\u015b\u0107 Datetime<\/strong><\/span><\/h3>\n
 Za\u0142\u00f3\u017cmy, \u017ce mamy nast\u0119puj\u0105c\u0105 ramk\u0119 danych z kolumn\u0105 zawieraj\u0105c\u0105 ci\u0105g dat i godzin:<\/span><\/p>\n
 #define data frame<\/span>\ndf <- data. frame<\/span> (day=c(\"2020-01-01 14:45:18\", \"2020-02-01 14:00:11\",\n                            \"2020-03-01 12:40:10\", \"2020-04-01 11:00:00\"),\n                 sales=c(13, 18, 22, 19))\n\n#view data frame\n<\/span>df\n\n                  day sales\n1 2020-01-01 14:45:18 13\n2 2020-02-01 14:00:11 18\n3 2020-03-01 12:40:10 22\n4 2020-04-01 11:00:00 19\n<\/strong><\/pre>\n
 Mo\u017cemy przekonwertowa\u0107 t\u0119 kolumn\u0119 ci\u0105gu na dat\u0119 i godzin\u0119, u\u017cywaj\u0105c nast\u0119puj\u0105cej sk\u0142adni:<\/span><\/p>\n
 #convert column of strings to datetime<\/span>\ndf$day <- as. POSIXct<\/span> (df$day, format=\" %Y-%m-%d %H:%M:%S<\/span> \", tz=\" UTC<\/span> \")\n\n#view class of 'day' column\n<\/span>class(df$day)\n\n[1] \u201cPOSIXct\u201d \u201cPOSIXt\u201d \n<\/strong><\/pre>\n
 Zauwa\u017c, \u017ce w tych przyk\u0142adach u\u017cyli\u015bmy okre\u015blonego formatu daty i godziny. Pe\u0142n\u0105 dokumentacj\u0119 potencjalnych format\u00f3w daty\/godziny, kt\u00f3rych mo\u017cesz u\u017cy\u0107, znajdziesz na tej stronie<\/a> .<\/span><\/p>\n
 Dodatkowe zasoby<\/strong><\/span><\/h3>\n
 Jak przekonwertowa\u0107 znak na wsp\u00f3\u0142czynnik w R<\/a>
 Jak przekonwertowa\u0107 wsp\u00f3\u0142czynnik na liczb\u0119 w R<\/a>
Jak przekonwertowa\u0107 list\u0119 na wektor w R<\/a>
 Jak przekonwertowa\u0107 kolumn\u0119 ramki danych na wektor w R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni, aby przekonwertowa\u0107 ci\u0105g na dat\u0119\/godzin\u0119 w R: as. POSIXct (string_name, format=” %Y-%m-%d %H:%M:%S „, tz=” UTC „) Poni\u017csze przyk\u0142ady pokazuj\u0105, jak zastosowa\u0107 t\u0119 sk\u0142adni\u0119 w praktyce: Przyk\u0142ad 1: Konwertuj ci\u0105g na DateTime Poni\u017cszy kod pokazuje, jak przekonwertowa\u0107 pojedynczy ci\u0105g znak\u00f3w w j\u0119zyku R na format datetime: #define string variable string_x <- […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-1900","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"\nJak przekonwertowa\u0107 ci\u0105g na Datetime w R - Statorials<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak przekonwertowa\u0107 ci\u0105g znak\u00f3w na warto\u015b\u0107 datetime w j\u0119zyku R, podaj\u0105c kilka przyk\u0142ad\u00f3w.\" \/>\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\/pl\/przekonwertuj-ciag-na-datetime-w-r\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak przekonwertowa\u0107 ci\u0105g na Datetime w R - Statorials\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak przekonwertowa\u0107 ci\u0105g znak\u00f3w na warto\u015b\u0107 datetime w j\u0119zyku R, podaj\u0105c kilka przyk\u0142ad\u00f3w.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/przekonwertuj-ciag-na-datetime-w-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-24T13:00:19+00:00\" \/>\n<meta name=\"author\" content=\"Benjamin Anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Napisane przez\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin Anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Szacowany czas czytania\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minuta\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pl\/przekonwertuj-ciag-na-datetime-w-r\/\",\"url\":\"https:\/\/statorials.org\/pl\/przekonwertuj-ciag-na-datetime-w-r\/\",\"name\":\"Jak przekonwertowa\u0107 ci\u0105g na Datetime w R - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-24T13:00:19+00:00\",\"dateModified\":\"2023-07-24T13:00:19+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak przekonwertowa\u0107 ci\u0105g znak\u00f3w na warto\u015b\u0107 datetime w j\u0119zyku R, podaj\u0105c kilka przyk\u0142ad\u00f3w.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/przekonwertuj-ciag-na-datetime-w-r\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/przekonwertuj-ciag-na-datetime-w-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/przekonwertuj-ciag-na-datetime-w-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak przekonwertowa\u0107 ci\u0105g na datetime w r\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/pl\/#website\",\"url\":\"https:\/\/statorials.org\/pl\/\",\"name\":\"Statorials\",\"description\":\"Tw\u00f3j przewodnik po kompetencjach statystycznych!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/pl\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pl-PL\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\",\"name\":\"Benjamin Anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pl-PL\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin Anderson\"},\"description\":\"Cze\u015b\u0107, jestem Benjamin i jestem emerytowanym profesorem statystyki, kt\u00f3ry zosta\u0142 oddanym nauczycielem Statorials. 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