{"id":2382,"date":"2023-07-22T12:34:04","date_gmt":"2023-07-22T12:34:04","guid":{"rendered":"https:\/\/statorials.org\/pl\/kolumna-zmiany-pand\/"},"modified":"2023-07-22T12:34:04","modified_gmt":"2023-07-22T12:34:04","slug":"kolumna-zmiany-pand","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/kolumna-zmiany-pand\/","title":{"rendered":"Jak przesun\u0105\u0107 kolumn\u0119 w pandach: z przyk\u0142adami"},"content":{"rendered":"

<\/p>\n

\n

Mo\u017cesz u\u017cy\u0107 funkcji shift()<\/strong> , aby przesun\u0105\u0107 warto\u015bci w g\u00f3r\u0119 lub w d\u00f3\u0142 kolumny w pandzie DataFrame:<\/span><\/p>\n

 #shift values down by 1<\/span>\ndf[' column1<\/span> '] = df[' column1<\/span> ']. shift<\/span> (1)\n\n#shift values up by 1<\/span>\ndf[' column1<\/span> '] = df[' column1<\/span> ']. shift<\/span> (-1)\n<\/strong><\/pre>\n
 Poni\u017csze przyk\u0142ady pokazuj\u0105, jak w praktyce u\u017cywa\u0107 tej funkcji z nast\u0119puj\u0105c\u0105 ramk\u0105 DataFrame pand:<\/span><\/p>\n
 import<\/span> pandas as<\/span> pd\n\n#createDataFrame\n<\/span>df = pd. DataFrame<\/span> ({' product<\/span> ': ['A', 'B', 'C', 'D', 'E', 'F'],\n                   ' sales<\/span> ': [4, 7, 8, 12, 15, 19]})\n\n#view DataFrame\n<\/span>df\n\n        product sales\n0 to 4\n1 B 7\n2 C 8\n3 D 12\n4 E 15\n5 F 19<\/strong><\/pre>\n
 Przyk\u0142ad 1: Przesu\u0144 kolumn\u0119 w g\u00f3r\u0119 lub w d\u00f3\u0142<\/strong><\/span><\/h3>\n
 Poni\u017cszy kod pokazuje jak przesun\u0105\u0107 wszystkie warto\u015bci w kolumnie \u201eprodukt\u201d w d\u00f3\u0142 o 1:<\/span><\/p>\n
 #shift all 'product' values down by 1\n<\/span>df[' product<\/span> '] = df[' product<\/span> ']. shift<\/span> (1)\n\n#view updated DataFrame\n<\/span>df\n\n\tproduct sales\n0 NaN 4\n1 to 7\n2 B 8\n3 C 12\n4 D 15\n5 E 19\n<\/span><\/span><\/strong><\/pre>\n
 Nale\u017cy pami\u0119ta\u0107, \u017ce ka\u017cda warto\u015b\u0107 w kolumnie \u201eprodukt\u201d zosta\u0142a przesuni\u0119ta o 1, a pierwsza warto\u015b\u0107 w kolumnie zosta\u0142a zmieniona na NaN.<\/span><\/p>\n
 Nale\u017cy r\u00f3wnie\u017c pami\u0119ta\u0107, \u017ce ostatnia warto\u015b\u0107 w kolumnie Produkt (\u201eF\u201d) zosta\u0142a ca\u0142kowicie usuni\u0119ta z ramki DataFrame.<\/span><\/p>\n
 Aby zachowa\u0107 warto\u015b\u0107 \u201eF\u201d w ramce DataFrame, musimy najpierw doda\u0107 pust\u0105 lini\u0119 na dole ramki DataFrame, a nast\u0119pnie wykona\u0107 przesuni\u0119cie:<\/span><\/p>\n
 import<\/span> numpy as<\/span> np\n\n#add empty row to bottom of DataFrame\n<\/span>df. loc<\/span> [len(df. index<\/span> )] = [np. nah<\/span> , np. no<\/span> ]\n\n#shift all 'product' values down by 1\n<\/span>df[' product<\/span> '] = df[' product<\/span> ']. shift<\/span> (1)\n\n#view updated DataFrame\n<\/span>df\n\n\tproduct sales\n0 NaN 4.0\n1 to 7.0\n2B 8.0\n3C 12.0\n4 D 15.0\n5 E 19.0\n6 F NaN\n<\/span><\/span><\/strong><\/pre>\n
 Nale\u017cy pami\u0119ta\u0107, \u017ce warto\u015b\u0107 \u201eF\u201d jest zachowywana jako ostatnia warto\u015b\u0107 w kolumnie \u201eprodukt\u201d.<\/span><\/p>\n
 Przyk\u0142ad 2: Przesu\u0144 wiele kolumn w g\u00f3r\u0119 lub w d\u00f3\u0142<\/strong><\/span><\/h3>\n
 Poni\u017cszy kod pokazuje jak przesun\u0105\u0107 wszystkie warto\u015bci w kolumnach \u201eprodukt\u201d i \u201esprzeda\u017c\u201d w g\u00f3r\u0119 o 2:<\/span><\/p>\n
 #shift all 'product' and 'sales' values up by 2\n<\/span>df[[' product<\/span> ', ' sales<\/span> ']] = df[[' product<\/span> ', ' sales<\/span> ']]. shift<\/span> (-2)\n\n#view updated DataFrame\n<\/span>df\n\n        product sales\n0 C 8.0\n1 D 12.0\n2 E 15.0\n3 F 19.0\n4 NaN NaN\n5 NaN NaN\n<\/span><\/span><\/strong><\/pre>\n
 Nale\u017cy pami\u0119ta\u0107, \u017ce ka\u017cda warto\u015b\u0107 w kolumnach \u201eprodukt\u201d i \u201esprzeda\u017c\u201d zosta\u0142a przesuni\u0119ta w g\u00f3r\u0119 o 2, a dwie dolne warto\u015bci w ka\u017cdej kolumnie zosta\u0142y zmienione na NaN.<\/span><\/p>\n
 Uwaga<\/strong> : pe\u0142n\u0105 dokumentacj\u0119 funkcji shift()<\/strong> mo\u017cna znale\u017a\u0107 tutaj<\/a> .<\/span><\/p>\n
 Dodatkowe zasoby<\/strong><\/span><\/h3>\n
 Poni\u017csze samouczki wyja\u015bniaj\u0105, jak wykonywa\u0107 inne typowe operacje na pandach:<\/span><\/p>\n
 Jak doda\u0107 wiersze do ramki danych Pandas<\/a>
 Jak doda\u0107 kolumn\u0119 do ramki danych Pandas
 Jak doda\u0107 wiersz nag\u0142\u00f3wka do ramki danych Pandas<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Mo\u017cesz u\u017cy\u0107 funkcji shift() , aby przesun\u0105\u0107 warto\u015bci w g\u00f3r\u0119 lub w d\u00f3\u0142 kolumny w pandzie DataFrame: #shift values down by 1 df[’ column1 ’] = df[’ column1 ’]. shift (1) #shift values up by 1 df[’ column1 ’] = df[’ column1 ’]. shift (-1) Poni\u017csze przyk\u0142ady pokazuj\u0105, jak w praktyce u\u017cywa\u0107 tej funkcji z […]<\/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-2382","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"\nJak przesun\u0105\u0107 kolumn\u0119 w Pandach (z przyk\u0142adami) \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak przesun\u0105\u0107 kolumn\u0119 w ramce DataFrame pandy, 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\/kolumna-zmiany-pand\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak przesun\u0105\u0107 kolumn\u0119 w Pandach (z przyk\u0142adami) \u2013 Statorials\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak przesun\u0105\u0107 kolumn\u0119 w ramce DataFrame pandy, podaj\u0105c kilka przyk\u0142ad\u00f3w.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/kolumna-zmiany-pand\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-22T12:34:04+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\/kolumna-zmiany-pand\/\",\"url\":\"https:\/\/statorials.org\/pl\/kolumna-zmiany-pand\/\",\"name\":\"Jak przesun\u0105\u0107 kolumn\u0119 w Pandach (z przyk\u0142adami) \u2013 Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-22T12:34:04+00:00\",\"dateModified\":\"2023-07-22T12:34:04+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak przesun\u0105\u0107 kolumn\u0119 w ramce DataFrame pandy, podaj\u0105c kilka przyk\u0142ad\u00f3w.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/kolumna-zmiany-pand\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/kolumna-zmiany-pand\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/kolumna-zmiany-pand\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak przesun\u0105\u0107 kolumn\u0119 w pandach: z przyk\u0142adami\"}]},{\"@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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