{"id":3411,"date":"2023-07-17T15:12:04","date_gmt":"2023-07-17T15:12:04","guid":{"rendered":"https:\/\/statorials.org\/pl\/r-zamien-na-na-mediane\/"},"modified":"2023-07-17T15:12:04","modified_gmt":"2023-07-17T15:12:04","slug":"r-zamien-na-na-mediane","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/r-zamien-na-na-mediane\/","title":{"rendered":"Jak zast\u0105pi\u0107 na median\u0105 w r"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Aby zast\u0105pi\u0107 warto\u015bci NA median\u0105, mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cych metod, korzystaj\u0105c z funkcji z pakiet\u00f3w <strong>dplyr<\/strong> i <strong>Tidyr<\/strong> w R:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Metoda 1: Zast\u0105p warto\u015bci NA median\u0105 w kolumnie<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df %&gt;% mutate(across(col1, ~replace_na(., median(., na. <span style=\"color: #3366ff;\">rm<\/span> = <span style=\"color: #008000;\">TRUE<\/span> ))))\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metoda 2: Zast\u0105p warto\u015bci NA median\u0105 w wielu kolumnach<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df %&gt;% mutate(across(c(col1, col2), ~replace_na(., median(., na. <span style=\"color: #3366ff;\">rm<\/span> = <span style=\"color: #008000;\">TRUE<\/span> ))))<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metoda 3: Zast\u0105p warto\u015bci NA median\u0105 we wszystkich kolumnach liczbowych<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df %&gt;% mutate(across(where(is. <span style=\"color: #3366ff;\">numeric<\/span> ), ~replace_na(., median(., na. <span style=\"color: #3366ff;\">rm<\/span> = <span style=\"color: #008000;\">TRUE<\/span> ))))<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Poni\u017csze przyk\u0142ady pokazuj\u0105, jak w praktyce zastosowa\u0107 ka\u017cd\u0105 metod\u0119 z nast\u0119puj\u0105c\u0105 ramk\u0105 danych:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame<\/span>\ndf &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (player=c('A', 'B', 'C', 'D', 'E'),\n                 points=c(17, 13, NA, 9, 25),\n                 rebounds=c(3, 4, NA, NA, 8),\n                 blocks=c(1, 1, 2, 4, NA))\n\n<span style=\"color: #008080;\">#view data frame<\/span>\ndf\n\n  player points rebounds blocks\n1 to 17 3 1\n2 B 13 4 1\n3 C NA NA 2\n4 D 9 NA 4\n5 E 25 8 NA\n<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 1: Zamie\u0144 warto\u015bci NA na median\u0119 w kolumnie<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak zast\u0105pi\u0107 warto\u015bci NA w kolumnie <strong>punktowej<\/strong> median\u0105 warto\u015bci kolumny <strong>punktowej<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (dplyr)\n<span style=\"color: #008000;\">library<\/span> (tidyr)\n\n<\/span><\/span><span style=\"color: #008080;\">#replace NA values in points column with median of points column\n<span style=\"color: #000000;\">df &lt;- df %&gt;% mutate(across(points, ~replace_na(., median(., na. <span style=\"color: #3366ff;\">rm<\/span> = <span style=\"color: #008000;\">TRUE<\/span> ))))\n<\/span>\n<span style=\"color: #000000;\"><span style=\"color: #008080;\">#view updated data frame\n<\/span>df\n\n  player points rebounds blocks\n1 to 17 3 1\n2 B 13 4 1\n3 C 15 NA 2\n4 D 9 NA 4\n5 E 25 8 NA<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Mediana warto\u015bci w kolumnie <strong>punkt\u00f3w<\/strong> wynios\u0142a 15, zatem warto\u015b\u0107 NA w kolumnie <strong>punkt\u00f3w<\/strong> zast\u0105piono liczb\u0105 15.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Pozosta\u0142e kolumny pozosta\u0142y niezmienione.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 2: Zamie\u0144 warto\u015bci NA na median\u0119 w wielu kolumnach<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak zast\u0105pi\u0107 warto\u015bci NA w kolumnach <strong>punktowych<\/strong> i <strong>blokowych<\/strong> odpowiednimi medianami kolumn:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (dplyr)\n<span style=\"color: #008000;\">library<\/span> (tidyr)\n\n<\/span><\/span><span style=\"color: #008080;\"><span style=\"font-size: 15px; color: #008080;\">#replace NA values in points and blocks columns with their<\/span> <span style=\"font-size: 15px;\">respective<\/span> <span style=\"font-size: 15px; color: #008080;\">medians\n<\/span><span style=\"color: #000000;\">df &lt;- df %&gt;% mutate(across(c(points, blocks), ~replace_na(., median(., na. <span style=\"color: #3366ff;\">rm<\/span> = <span style=\"color: #008000;\">TRUE<\/span> ))))\n<\/span><span style=\"color: #000000;\"><span style=\"color: #008080;\">\n#view updated data frame\n<\/span>df\n\n  player points rebounds blocks\n1 to 17 3 1.0\n2 B 13 4 1.0\n3 C 15 NA 2.0\n4 D 9 NA 4.0\n5 E 25 8 1.5<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Nale\u017cy zauwa\u017cy\u0107, \u017ce warto\u015bci NA w kolumnach <strong>punktowych<\/strong> i <strong>blokowych<\/strong> zosta\u0142y zast\u0105pione odpowiednimi medianami kolumn.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 3: Zamie\u0144 warto\u015bci NA na median\u0119 we wszystkich kolumnach liczbowych<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak zast\u0105pi\u0107 warto\u015bci NA w ka\u017cdej kolumnie liczbowej odpowiedni\u0105 warto\u015bci\u0105 median\u0105:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (dplyr)\n<span style=\"color: #008000;\">library<\/span> (tidyr)\n\n<\/span><\/span><span style=\"color: #008080;\"><span style=\"font-size: 15px; color: #008080;\">#replace NA values in all numeric columns with their<\/span> <span style=\"font-size: 15px;\">respective<\/span> <span style=\"font-size: 15px; color: #008080;\">medians\n<\/span><span style=\"color: #000000;\">df &lt;- df %&gt;% mutate(across(where(is. <span style=\"color: #3366ff;\">numeric<\/span> ), ~replace_na(., median(., na. <span style=\"color: #3366ff;\">rm<\/span> = <span style=\"color: #008000;\">TRUE<\/span> ))))\n<\/span><span style=\"color: #000000;\"><span style=\"color: #008080;\">\n#view updated data frame\n<\/span>df\n\n  player points rebounds blocks\n1 to 17 3 1.0\n2 B 13 4 1.0\n3 C 15 4 2.0\n4 D 9 4 4.0\n5 E 25 8 1.5<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Nale\u017cy zauwa\u017cy\u0107, \u017ce warto\u015bci NA we wszystkich kolumnach liczbowych zosta\u0142y zast\u0105pione odpowiednimi medianami kolumn.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Jedyna kolumna, kt\u00f3ra nie by\u0142a numeryczna <strong>(gracz),<\/strong> pozosta\u0142a niezmieniona.<\/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 zadania w dplyr:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pl\/filtruj-linie-zawierajace-ciag-dplyr\/\" target=\"_blank\" rel=\"noopener\">Jak filtrowa\u0107 wiersze zawieraj\u0105ce okre\u015blony ci\u0105g za pomoc\u0105 dplyr<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/dplyr-usun-linie\/\" target=\"_blank\" rel=\"noopener\">Jak usun\u0105\u0107 wiersze za pomoc\u0105 dplyr<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/dplyr-przez\/\" target=\"_blank\" rel=\"noopener\">Jak u\u017cywa\u0107 funkcjicross() w dplyr<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aby zast\u0105pi\u0107 warto\u015bci NA median\u0105, mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cych metod, korzystaj\u0105c z funkcji z pakiet\u00f3w dplyr i Tidyr w R: Metoda 1: Zast\u0105p warto\u015bci NA median\u0105 w kolumnie df %&gt;% mutate(across(col1, ~replace_na(., median(., na. rm = TRUE )))) Metoda 2: Zast\u0105p warto\u015bci NA median\u0105 w wielu kolumnach df %&gt;% mutate(across(c(col1, col2), ~replace_na(., median(., na. rm = [&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-3411","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 zast\u0105pi\u0107 NA median\u0105 w R - Statology<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak zast\u0105pi\u0107 warto\u015bci NA median\u0105 w R, 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\/r-zamien-na-na-mediane\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" 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