{"id":3205,"date":"2023-07-18T16:51:56","date_gmt":"2023-07-18T16:51:56","guid":{"rendered":"https:\/\/statorials.org\/pl\/pandy-fillna-z-moda\/"},"modified":"2023-07-18T16:51:56","modified_gmt":"2023-07-18T16:51:56","slug":"pandy-fillna-z-moda","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/pandy-fillna-z-moda\/","title":{"rendered":"Pandy: jak wype\u0142ni\u0107 warto\u015bci nan za pomoc\u0105 mode"},"content":{"rendered":"

<\/p>\n

\n

Mo\u017cesz u\u017cy\u0107 poni\u017cszej sk\u0142adni, aby zast\u0105pi\u0107 warto\u015bci NaN w kolumnie pandy DataFrame warto\u015bci\u0105 trybu kolumny:<\/span><\/p>\n

 df[' col1<\/span> '] = df[' col1<\/span> ']. fillna<\/span> (df[' col1<\/span> ']. mode<\/span> ()[0])<\/strong><\/pre>\n
 Poni\u017cszy przyk\u0142ad pokazuje, jak zastosowa\u0107 t\u0119 sk\u0142adni\u0119 w praktyce.<\/span><\/p>\n
 Przyk\u0142ad: Zamie\u0144 brakuj\u0105ce warto\u015bci na Tryb w Pandach<\/strong><\/span><\/h3>\n
 Za\u0142\u00f3\u017cmy, \u017ce mamy nast\u0119puj\u0105c\u0105 ramk\u0119 danych pandy z kilkoma brakuj\u0105cymi warto\u015bciami:<\/span><\/p>\n
 import<\/span> numpy as<\/span> np\nimport<\/span> pandas as<\/span> pd\n\n#create DataFrame with some NaN values<\/span>\ndf = pd. DataFrame<\/span> ({' rating<\/span> ': [np.nan, 85, np.nan, 88, 94, 90, 75, 75, 87, 86],\n                   ' points<\/span> ': [25, np.nan, 14, 16, 27, 20, 12, 15, 14, 19],\n                   ' assists<\/span> ': [5, 7, 7, np.nan, 5, 7, 6, 9, 9, 7],\n                   ' rebounds<\/span> ': [11, 8, 10, 6, 6, 9, 6, 10, 10, 7]})\n\n#view DataFrame<\/span>\ndf\n\n        rating points assists rebounds\n0 NaN 25.0 5.0 11\n1 85.0 NaN 7.0 8\n2 NaN 14.0 7.0 10\n3 88.0 16.0 NaN 6\n4 94.0 27.0 5.0 6\n5 90.0 20.0 7.0 9\n6 75.0 12.0 6.0 6\n7 75.0 15.0 9.0 10\n8 87.0 14.0 9.0 10\n9 86.0 19.0 7.0 7\n<\/strong><\/pre>\n
 Mo\u017cemy u\u017cy\u0107 funkcji fillna()<\/strong> do wype\u0142nienia warto\u015bci NaN w kolumnie oceny<\/strong> warto\u015bci\u0105 trybu kolumny oceny<\/strong> :<\/span><\/p>\n
 #fill NaNs with column mode in 'rating' column<\/span>\ndf[' rating<\/span> '] = df[' rating<\/span> ']. fillna<\/span> (df[' rating<\/span> ']. mode<\/span> ()[0])\n\n<\/span>#view updated DataFrame<\/span>\ndf\n\n\trating points assists rebounds\n0 75.0 25.0 5.0 11\n1 85.0 NaN 7.0 8\n2 75.0 14.0 7.0 10\n3 88.0 16.0 NaN 6\n4 94.0 27.0 5.0 6\n5 90.0 20.0 7.0 9\n6 75.0 12.0 6.0 6\n7 75.0 15.0 9.0 10\n8 87.0 14.0 9.0 10\n9 86.0 19.0 7.0 7\n<\/strong><\/pre>\n
 Warto\u015b\u0107 trybu w kolumnie oceny<\/strong> wynosi\u0142a 75<\/b> , wi\u0119c ka\u017cda z warto\u015bci NaN w kolumnie oceny<\/strong> zosta\u0142a wype\u0142niona t\u0105 warto\u015bci\u0105.<\/span><\/p>\n
 Uwaga<\/strong> : Pe\u0142n\u0105 dokumentacj\u0119 online funkcji fillna()<\/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 policzy\u0107 brakuj\u0105ce warto\u015bci w pandach<\/a>
 Jak usun\u0105\u0107 wiersze z warto\u015bciami NaN w Pandach<\/a>
 Jak usun\u0105\u0107 wiersze zawieraj\u0105ce okre\u015blon\u0105 warto\u015b\u0107 w Pandach<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Mo\u017cesz u\u017cy\u0107 poni\u017cszej sk\u0142adni, aby zast\u0105pi\u0107 warto\u015bci NaN w kolumnie pandy DataFrame warto\u015bci\u0105 trybu kolumny: df[’ col1 ’] = df[’ col1 ’]. fillna (df[’ col1 ’]. mode ()[0]) Poni\u017cszy przyk\u0142ad pokazuje, jak zastosowa\u0107 t\u0119 sk\u0142adni\u0119 w praktyce. Przyk\u0142ad: Zamie\u0144 brakuj\u0105ce warto\u015bci na Tryb w Pandach Za\u0142\u00f3\u017cmy, \u017ce mamy nast\u0119puj\u0105c\u0105 ramk\u0119 danych pandy z kilkoma brakuj\u0105cymi […]<\/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-3205","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"\nPandy: Jak wype\u0142ni\u0107 warto\u015bci NaN trybem - Statorials<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak u\u017cywa\u0107 funkcji fillna() w pandach do uzupe\u0142niania brakuj\u0105cych warto\u015bci za pomoc\u0105 trybu, \u0142\u0105cznie z 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-fillna-z-moda\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pandy: Jak wype\u0142ni\u0107 warto\u015bci NaN trybem - Statorials\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak u\u017cywa\u0107 funkcji fillna() w pandach do uzupe\u0142niania brakuj\u0105cych warto\u015bci za pomoc\u0105 trybu, \u0142\u0105cznie z przyk\u0142adami.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/pandy-fillna-z-moda\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-18T16:51:56+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\/pandy-fillna-z-moda\/\",\"url\":\"https:\/\/statorials.org\/pl\/pandy-fillna-z-moda\/\",\"name\":\"Pandy: Jak wype\u0142ni\u0107 warto\u015bci NaN trybem - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-18T16:51:56+00:00\",\"dateModified\":\"2023-07-18T16:51:56+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak u\u017cywa\u0107 funkcji fillna() w pandach do uzupe\u0142niania brakuj\u0105cych warto\u015bci za pomoc\u0105 trybu, \u0142\u0105cznie z przyk\u0142adami.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/pandy-fillna-z-moda\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/pandy-fillna-z-moda\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/pandy-fillna-z-moda\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Pandy: jak wype\u0142ni\u0107 warto\u015bci nan za pomoc\u0105 mode\"}]},{\"@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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