{"id":1602,"date":"2023-07-25T16:51:45","date_gmt":"2023-07-25T16:51:45","guid":{"rendered":"https:\/\/statorials.org\/pl\/roznica-pand-miedzy-dwiema-kolumnami\/"},"modified":"2023-07-25T16:51:45","modified_gmt":"2023-07-25T16:51:45","slug":"roznica-pand-miedzy-dwiema-kolumnami","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/roznica-pand-miedzy-dwiema-kolumnami\/","title":{"rendered":"Pandy: jak znale\u017a\u0107 r\u00f3\u017cnic\u0119 mi\u0119dzy dwiema kolumnami"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Aby znale\u017a\u0107 r\u00f3\u017cnic\u0119 mi\u0119dzy dwiema kolumnami w ramce danych pand, mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df[' <span style=\"color: #ff0000;\">difference<\/span> '] = df[' <span style=\"color: #ff0000;\">column1<\/span> '] - df[' <span style=\"color: #ff0000;\">column2<\/span> ']\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Poni\u017csze przyk\u0142ady pokazuj\u0105, jak u\u017cywa\u0107 tej sk\u0142adni w praktyce.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 1: Znajd\u017a r\u00f3\u017cnic\u0119 mi\u0119dzy dwiema kolumnami<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Za\u0142\u00f3\u017cmy, \u017ce mamy nast\u0119puj\u0105c\u0105 ramk\u0119 danych pand, kt\u00f3ra pokazuje ca\u0142kowit\u0105 sprzeda\u017c dla dw\u00f3ch region\u00f3w (A i B) w o\u015bmiu kolejnych okresach sprzeda\u017cy:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #107d3f;\">import<\/span> pandas <span style=\"color: #107d3f;\">as<\/span> pd\n\n<span style=\"color: #008080;\">#createDataFrame<\/span>\ndf = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">period<\/span> ': [1, 2, 3, 4, 5, 6, 7, 8],\n                   ' <span style=\"color: #ff0000;\">A_sales<\/span> ': [12, 14, 15, 13, 18, 20, 19, 24],\n                   ' <span style=\"color: #ff0000;\">B_sales<\/span> ': [14, 19, 20, 22, 24, 20, 17, 23]})\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\nperiod A_sales B_sales\n0 1 12 14\n1 2 14 19\n2 3 15 20\n3 4 13 22\n4 5 18 24\n5 6 20 20\n6 7 19 17\n7 8 24 23<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak obliczy\u0107 r\u00f3\u017cnic\u0119 mi\u0119dzy sprzeda\u017c\u0105 w Regionie B i Regionie A dla ka\u017cdego okresu sprzeda\u017cy:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#add new column to represent difference between B sales and A sales<\/span>\ndf[' <span style=\"color: #ff0000;\">diff<\/span> '] = df[' <span style=\"color: #ff0000;\">B_sales<\/span> '] - df[' <span style=\"color: #ff0000;\">A_sales<\/span> ']\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\n        period A_sales B_sales diff\n0 1 12 14 2\n1 2 14 19 5\n2 3 15 20 5\n3 4 13 22 9\n4 5 18 24 6\n5 6 20 20 0\n6 7 19 17 -2\n7 8 24 23 -1\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Bezwzgl\u0119dn\u0105 r\u00f3\u017cnic\u0119 w sprzeda\u017cy mo\u017cemy r\u00f3wnie\u017c obliczy\u0107 za pomoc\u0105 funkcji <strong>pandas.Series.abs()<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#add new column to represent absolute difference between B sales and A sales<\/span>\ndf[' <span style=\"color: #ff0000;\">diff<\/span> '] = pd. <span style=\"color: #3366ff;\">Series<\/span> . <span style=\"color: #3366ff;\">abs<\/span> (df[' <span style=\"color: #ff0000;\">B_sales<\/span> '] - df[' <span style=\"color: #ff0000;\">A_sales<\/span> '])\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\n\tperiod A_sales B_sales diff\n0 1 12 14 2\n1 2 14 19 5\n2 3 15 20 5\n3 4 13 22 9\n4 5 18 24 6\n5 6 20 20 0\n6 7 19 17 2\n7 8 24 23 1\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 2: Znajd\u017a r\u00f3\u017cnic\u0119 mi\u0119dzy kolumnami na podstawie warunku<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Mo\u017cemy r\u00f3wnie\u017c filtrowa\u0107 ramk\u0119 danych, aby wy\u015bwietla\u0107 tylko wiersze, w kt\u00f3rych r\u00f3\u017cnica mi\u0119dzy kolumnami jest mniejsza lub wi\u0119ksza ni\u017c okre\u015blona warto\u015b\u0107.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Na przyk\u0142ad poni\u017cszy kod zwraca tylko wiersze, w kt\u00f3rych sprzeda\u017c w regionie A jest <strong>wi\u0119ksza<\/strong> ni\u017c sprzeda\u017c w regionie B:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#add new column to represent difference between B sales and A sales<\/span>\ndf[' <span style=\"color: #ff0000;\">diff<\/span> '] = df[' <span style=\"color: #ff0000;\">B_sales<\/span> '] - df[' <span style=\"color: #ff0000;\">A_sales<\/span> ']\n\n<span style=\"color: #008080;\">#display rows where sales in region A is greater than sales in region B\n<span style=\"color: #000000;\">df[df[' <span style=\"color: #ff0000;\">diff<\/span> ']&lt; <span style=\"color: #008000;\">0<\/span> ]\n\n\n        period A_sales B_sales diff\n6 7 19 17 -2\n7 8 24 23 -1\n<\/span><\/span><\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Dodatkowe zasoby<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/pl\/panda-roznica-miedzy-rzedami\/\" target=\"_blank\" rel=\"noopener\">Pandy: jak znale\u017a\u0107 r\u00f3\u017cnic\u0119 mi\u0119dzy dwiema liniami<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/pandas-groupby-agreguje-wiele-kolumn\/\" target=\"_blank\" rel=\"noopener\">Pandy: jak grupowa\u0107 i agregowa\u0107 w wielu kolumnach<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aby znale\u017a\u0107 r\u00f3\u017cnic\u0119 mi\u0119dzy dwiema kolumnami w ramce danych pand, mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni: df[&#8217; difference &#8217;] = df[&#8217; column1 &#8217;] &#8211; df[&#8217; column2 &#8217;] Poni\u017csze przyk\u0142ady pokazuj\u0105, jak u\u017cywa\u0107 tej sk\u0142adni w praktyce. Przyk\u0142ad 1: Znajd\u017a r\u00f3\u017cnic\u0119 mi\u0119dzy dwiema kolumnami Za\u0142\u00f3\u017cmy, \u017ce mamy nast\u0119puj\u0105c\u0105 ramk\u0119 danych pand, kt\u00f3ra pokazuje ca\u0142kowit\u0105 sprzeda\u017c dla dw\u00f3ch region\u00f3w [&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-1602","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 znale\u017a\u0107 r\u00f3\u017cnic\u0119 mi\u0119dzy dwiema kolumnami<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak znale\u017a\u0107 r\u00f3\u017cnic\u0119 mi\u0119dzy dwiema kolumnami 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\/roznica-pand-miedzy-dwiema-kolumnami\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pandy: jak znale\u017a\u0107 r\u00f3\u017cnic\u0119 mi\u0119dzy dwiema kolumnami\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak znale\u017a\u0107 r\u00f3\u017cnic\u0119 mi\u0119dzy dwiema kolumnami w ramce DataFrame pandy, podaj\u0105c kilka przyk\u0142ad\u00f3w.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/roznica-pand-miedzy-dwiema-kolumnami\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-25T16:51:45+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\/roznica-pand-miedzy-dwiema-kolumnami\/\",\"url\":\"https:\/\/statorials.org\/pl\/roznica-pand-miedzy-dwiema-kolumnami\/\",\"name\":\"Pandy: jak znale\u017a\u0107 r\u00f3\u017cnic\u0119 mi\u0119dzy dwiema kolumnami\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-25T16:51:45+00:00\",\"dateModified\":\"2023-07-25T16:51:45+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak znale\u017a\u0107 r\u00f3\u017cnic\u0119 mi\u0119dzy dwiema kolumnami w ramce DataFrame pandy, podaj\u0105c kilka przyk\u0142ad\u00f3w.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/roznica-pand-miedzy-dwiema-kolumnami\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/roznica-pand-miedzy-dwiema-kolumnami\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/roznica-pand-miedzy-dwiema-kolumnami\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Pandy: jak znale\u017a\u0107 r\u00f3\u017cnic\u0119 mi\u0119dzy dwiema kolumnami\"}]},{\"@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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