{"id":3537,"date":"2023-07-16T23:18:53","date_gmt":"2023-07-16T23:18:53","guid":{"rendered":"https:\/\/statorials.org\/pl\/pandy-wybieraja-linie-pomiedzy-dwiema-datami\/"},"modified":"2023-07-16T23:18:53","modified_gmt":"2023-07-16T23:18:53","slug":"pandy-wybieraja-linie-pomiedzy-dwiema-datami","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/pandy-wybieraja-linie-pomiedzy-dwiema-datami\/","title":{"rendered":"Pandy: jak wybra\u0107 wiersze mi\u0119dzy dwiema datami"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni, aby wybra\u0107 wiersze pomi\u0119dzy dwiema okre\u015blonymi datami w ramce DataFrame pandy:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df[df. <span style=\"color: #3366ff;\">date<\/span> . <span style=\"color: #3366ff;\">between<\/span> (' <span style=\"color: #ff0000;\">2022-01-02<\/span> ', ' <span style=\"color: #ff0000;\">2022-01-06<\/span> ')]\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">W tym konkretnym przyk\u0142adzie zaznaczone s\u0105 wszystkie wiersze w ramce danych mi\u0119dzy 01.02.2022 a 01.06.2022.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Poni\u017cszy przyk\u0142ad pokazuje, jak zastosowa\u0107 t\u0119 sk\u0142adni\u0119 w praktyce.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad: wybierz wiersze pomi\u0119dzy dwiema datami w Pandach<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Za\u0142\u00f3\u017cmy, \u017ce mamy nast\u0119puj\u0105c\u0105 ramk\u0119 DataFrame pand:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd\n<span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">\n#createDataFrame\n<\/span>df = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">date<\/span> ': pd. <span style=\"color: #3366ff;\">date_range<\/span> (start=' <span style=\"color: #ff0000;\">1\/1\/2022<\/span> ', periods= <span style=\"color: #008000;\">8<\/span> ),\n                   ' <span style=\"color: #ff0000;\">sales<\/span> ': [18, 20, 15, 14, 10, 9, 8, 12],\n                   ' <span style=\"color: #ff0000;\">returns<\/span> ': [5, 7, 7, 9, 12, 3, 2, 4]})\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span><span style=\"color: #008000;\">print<\/span> (df)\n\n        date sales returns\n0 2022-01-01 18 5\n1 2022-01-02 20 7\n2 2022-01-03 15 7\n3 2022-01-04 14 9\n4 2022-01-05 10 12\n5 2022-01-06 9 3\n6 2022-01-07 8 2\n7 2022-01-08 12 4<\/span>\n<\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Mo\u017cemy u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni, aby wybra\u0107 tylko wiersze mi\u0119dzy dat\u0105 01.02.2022 a 01.06.2022:<\/span><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#select all rows where date is between 2022-01-02 and 2022-01-06\n<\/span>df[df. <span style=\"color: #3366ff;\">date<\/span> . <span style=\"color: #3366ff;\">between<\/span> (' <span style=\"color: #ff0000;\">2022-01-02<\/span> ', ' <span style=\"color: #ff0000;\">2022-01-06<\/span> ')]\n\n              date sales returns\n1 2022-01-02 20 7\n2 2022-01-03 15 7\n3 2022-01-04 14 9\n4 2022-01-05 10 12\n5 2022-01-06 9 3<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Nale\u017cy pami\u0119ta\u0107, \u017ce wybrane s\u0105 tylko wiersze pomi\u0119dzy datami 2022-01-02 i 2022-01-06.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Je\u015bli chcesz, mo\u017cesz tak\u017ce ustawi\u0107 daty pocz\u0105tkowe i ko\u0144cowe poza funkcj\u0105 <strong>Between()<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#define start and end dates<\/span>\nstart_date = ' <span style=\"color: #ff0000;\">2022-01-02<\/span> '\nend_date = ' <span style=\"color: #ff0000;\">2022-01-06<\/span> '\n\n<span style=\"color: #008080;\">#select all rows where date is between start and end\n<\/span>df[df. <span style=\"color: #3366ff;\">date<\/span> . <span style=\"color: #3366ff;\">between<\/span> (start_date, end_date)]\n\n\n              date sales returns\n1 2022-01-02 20 7\n2 2022-01-03 15 7\n3 2022-01-04 14 9\n4 2022-01-05 10 12\n5 2022-01-06 9 3\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Daje to ten sam wynik.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Pami\u0119taj, \u017ce je\u015bli kolumna daty nie jest w rozpoznawalnym formacie datetime, konieczne mo\u017ce by\u0107 najpierw u\u017cycie poni\u017cszego kodu w celu przekonwertowania jej na format datetime:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\">df[' <span style=\"color: #ff0000;\">date<\/span> '] = pd. <span style=\"color: #3366ff;\">to_datetime<\/span> (df[' <span style=\"color: #ff0000;\">date<\/span> ']) \n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Gdy ju\u017c to zrobisz, mo\u017cesz u\u017cy\u0107 funkcji <strong>Between()<\/strong> , aby wybra\u0107 wiersze pomi\u0119dzy okre\u015blonymi datami.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Dodatkowe zasoby<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017csze samouczki wyja\u015bniaj\u0105, jak wykonywa\u0107 inne typowe operacje na pandach:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pl\/zakres-dat-pandy\/\" target=\"_blank\" rel=\"noopener\">Jak utworzy\u0107 zakres dat w Pandach<\/a><br \/><a href=\"https:\/\/statorials.org\/pl\/ekstrakt-z-pand-miesiac-od-daty\/\" target=\"_blank\" rel=\"noopener\">Jak wyodr\u0119bni\u0107 miesi\u0105c z daty w Pandach<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/panda-sygnatura-czasowa-data-godzina\/\" target=\"_blank\" rel=\"noopener\">Jak przekonwertowa\u0107 znacznik czasu na dat\u0119\/godzin\u0119 w Pandach<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni, aby wybra\u0107 wiersze pomi\u0119dzy dwiema okre\u015blonymi datami w ramce DataFrame pandy: df[df. date . between (&#8217; 2022-01-02 &#8217;, &#8217; 2022-01-06 &#8217;)] W tym konkretnym przyk\u0142adzie zaznaczone s\u0105 wszystkie wiersze w ramce danych mi\u0119dzy 01.02.2022 a 01.06.2022. Poni\u017cszy przyk\u0142ad pokazuje, jak zastosowa\u0107 t\u0119 sk\u0142adni\u0119 w praktyce. Przyk\u0142ad: wybierz wiersze pomi\u0119dzy dwiema datami [&hellip;]<\/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-3537","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Pandy: Jak zaznaczy\u0107 linie pomi\u0119dzy dwiema datami \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, na przyk\u0142adzie, jak wybiera\u0107 wiersze mi\u0119dzy dwiema datami w ramce DataFrame pandy.\" \/>\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\/pandy-wybieraja-linie-pomiedzy-dwiema-datami\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pandy: Jak zaznaczy\u0107 linie pomi\u0119dzy dwiema datami \u2013 Statorials\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, na przyk\u0142adzie, jak wybiera\u0107 wiersze mi\u0119dzy dwiema datami w ramce DataFrame pandy.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/pandy-wybieraja-linie-pomiedzy-dwiema-datami\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-16T23:18:53+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=\"2 minuty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pl\/pandy-wybieraja-linie-pomiedzy-dwiema-datami\/\",\"url\":\"https:\/\/statorials.org\/pl\/pandy-wybieraja-linie-pomiedzy-dwiema-datami\/\",\"name\":\"Pandy: Jak zaznaczy\u0107 linie pomi\u0119dzy dwiema datami \u2013 Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-16T23:18:53+00:00\",\"dateModified\":\"2023-07-16T23:18:53+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, na przyk\u0142adzie, jak wybiera\u0107 wiersze mi\u0119dzy dwiema datami w ramce DataFrame pandy.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/pandy-wybieraja-linie-pomiedzy-dwiema-datami\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/pandy-wybieraja-linie-pomiedzy-dwiema-datami\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/pandy-wybieraja-linie-pomiedzy-dwiema-datami\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Pandy: jak wybra\u0107 wiersze mi\u0119dzy dwiema datami\"}]},{\"@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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