{"id":2200,"date":"2023-07-23T06:58:55","date_gmt":"2023-07-23T06:58:55","guid":{"rendered":"https:\/\/statorials.org\/pl\/pandy-maja-unikalne-wartosci\/"},"modified":"2023-07-23T06:58:55","modified_gmt":"2023-07-23T06:58:55","slug":"pandy-maja-unikalne-wartosci","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/pandy-maja-unikalne-wartosci\/","title":{"rendered":"Jak liczy\u0107 unikalne warto\u015bci w pandach: z przyk\u0142adami"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Mo\u017cesz u\u017cy\u0107 funkcji <a href=\"https:\/\/pandas.pydata.org\/docs\/reference\/api\/pandas.DataFrame.nunique.html\" target=\"_blank\" rel=\"noopener\">nunique()<\/a> do zliczenia liczby unikalnych warto\u015bci w ramce DataFrame pandy.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Ta funkcja wykorzystuje nast\u0119puj\u0105c\u0105 podstawow\u0105 sk\u0142adni\u0119:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#count unique values in each column<\/span>\ndf. <span style=\"color: #3366ff;\">nunique<\/span> ()\n\n<span style=\"color: #008080;\">#count unique values in each row<\/span>\ndf. <span style=\"color: #3366ff;\">nunique<\/span> (axis= <span style=\"color: #008000;\">1<\/span> )\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">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<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd<\/span>\n\n#createDataFrame\n<span style=\"color: #000000;\">df = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">team<\/span> ': ['A', 'A', 'A', 'A', 'B', 'B', 'B', 'B'],\n                   ' <span style=\"color: #ff0000;\">points<\/span> ': [8, 8, 13, 13, 22, 22, 25, 29],\n                   ' <span style=\"color: #ff0000;\">assists<\/span> ': [5, 8, 7, 9, 12, 9, 9, 4],\n                   ' <span style=\"color: #ff0000;\">rebounds<\/span> ': [11, 8, 11, 6, 6, 5, 9, 12]})<\/span>\n\n#view DataFrame\n<span style=\"color: #000000;\">df\n\n\tteam points assists rebounds\n0 to 8 5 11\n1 To 8 8 8\n2 to 13 7 11\n3 A 13 9 6\n4 B 22 12 6\n5 B 22 9 5\n6 B 25 9 9\n7 B 29 4 12\n<\/span><\/span><\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 1: Policz unikalne warto\u015bci w ka\u017cdej kolumnie<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak policzy\u0107 liczb\u0119 unikalnych warto\u015bci w ka\u017cdej kolumnie DataFrame:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#count unique values in each column\n<span style=\"color: #000000;\">df. <span style=\"color: #3366ff;\">nunique<\/span> ()\n\nteam 2\npoints 5\nassists 5\nrebounds 6\ndtype: int64\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Z wyniku mo\u017cemy zobaczy\u0107:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Kolumna \u201ezesp\u00f3\u0142\u201d ma <strong>2<\/strong> unikalne warto\u015bci<\/span><\/li>\n<li> <span style=\"color: #000000;\">Kolumna \u201epunkty\u201d ma <strong>5<\/strong> unikalnych warto\u015bci<\/span><\/li>\n<li> <span style=\"color: #000000;\">Kolumna \u201epomoc\u201d ma <strong>5<\/strong> unikalnych warto\u015bci<\/span><\/li>\n<li> <span style=\"color: #000000;\">Kolumna \u201eodbicia\u201d ma <strong>6<\/strong> unikalnych warto\u015bci<\/span><\/li>\n<\/ul>\n<h3> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 2: Policz unikalne warto\u015bci w ka\u017cdym wierszu<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak policzy\u0107 liczb\u0119 unikalnych warto\u015bci w ka\u017cdym wierszu DataFrame:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#count unique values in each row\n<span style=\"color: #000000;\">df. <span style=\"color: #3366ff;\">nunique<\/span> (axis= <span style=\"color: #008000;\">1<\/span> )\n\n0 4\n1 2\n2 4\n3 4\n4 4\n5 4\n6 3\n7 4\ndtype: int64\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Z wyniku mo\u017cemy zobaczy\u0107:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Pierwsza linia zawiera <strong>4<\/strong> unikalne warto\u015bci<\/span><\/li>\n<li> <span style=\"color: #000000;\">Druga linia ma <strong>2<\/strong> unikalne warto\u015bci<\/span><\/li>\n<li> <span style=\"color: #000000;\">Trzeci wiersz zawiera <strong>4<\/strong> unikalne warto\u015bci<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">I tak dalej.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 3: Policz unikalne warto\u015bci na grup\u0119<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak policzy\u0107 liczb\u0119 unikalnych warto\u015bci na grup\u0119 w DataFrame:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#count unique 'points' values, grouped by team\n<span style=\"color: #000000;\">df. <span style=\"color: #3366ff;\">groupby<\/span> (' <span style=\"color: #ff0000;\">team<\/span> ')[' <span style=\"color: #ff0000;\">points<\/span> ']. <span style=\"color: #3366ff;\">nunique<\/span> ()\n\nteam\nAt 2\nB 3\nName: points, dtype: int64<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Z wyniku mo\u017cemy zobaczy\u0107:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Zesp\u00f3\u0142 \u201eA\u201d ma <strong>2<\/strong> unikalne warto\u015bci \u201epunktowe\u201d.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Zesp\u00f3\u0142 \u201eB\u201d ma <strong>3<\/strong> unikalne warto\u015bci \u201epunktowe\u201d.<\/span><\/li>\n<\/ul>\n<h3> <span style=\"color: #000000;\"><strong>Dodatkowe zasoby<\/strong><\/span><\/h3>\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\/grupa-pand-wed\u0142ug-numeru\/\" target=\"_blank\" rel=\"noopener\">Jak liczy\u0107 obserwacje grupowe u pand<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/pandy-licza-brakujace-wartosci\/\" target=\"_blank\" rel=\"noopener\">Jak policzy\u0107 brakuj\u0105ce warto\u015bci w pandach<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/pandy-wartosc_liczby\/\" target=\"_blank\" rel=\"noopener\">Jak korzysta\u0107 z funkcji Pandy value_counts().<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mo\u017cesz u\u017cy\u0107 funkcji nunique() do zliczenia liczby unikalnych warto\u015bci w ramce DataFrame pandy. Ta funkcja wykorzystuje nast\u0119puj\u0105c\u0105 podstawow\u0105 sk\u0142adni\u0119: #count unique values in each column df. nunique () #count unique values in each row df. nunique (axis= 1 ) Poni\u017csze przyk\u0142ady pokazuj\u0105, jak w praktyce u\u017cywa\u0107 tej funkcji z nast\u0119puj\u0105c\u0105 ramk\u0105 DataFrame pand: import pandas [&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-2200","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>Jak liczy\u0107 unikalne warto\u015bci w pandach (z przyk\u0142adami) \u2013 Statologia<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak zliczy\u0107 unikalne warto\u015bci w ramce DataFrame pandy, z kilkoma przyk\u0142adami.\" \/>\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-maja-unikalne-wartosci\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak liczy\u0107 unikalne warto\u015bci w pandach (z przyk\u0142adami) \u2013 Statologia\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak zliczy\u0107 unikalne warto\u015bci w ramce DataFrame pandy, z kilkoma przyk\u0142adami.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/pandy-maja-unikalne-wartosci\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-23T06:58:55+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-maja-unikalne-wartosci\/\",\"url\":\"https:\/\/statorials.org\/pl\/pandy-maja-unikalne-wartosci\/\",\"name\":\"Jak liczy\u0107 unikalne warto\u015bci w pandach (z przyk\u0142adami) \u2013 Statologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-23T06:58:55+00:00\",\"dateModified\":\"2023-07-23T06:58:55+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak zliczy\u0107 unikalne warto\u015bci w ramce DataFrame pandy, z kilkoma przyk\u0142adami.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/pandy-maja-unikalne-wartosci\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/pandy-maja-unikalne-wartosci\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/pandy-maja-unikalne-wartosci\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak liczy\u0107 unikalne warto\u015bci 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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