{"id":4109,"date":"2023-07-13T13:01:07","date_gmt":"2023-07-13T13:01:07","guid":{"rendered":"https:\/\/statorials.org\/pl\/r-wyodrebnij-kolumny-z-ramki-danych\/"},"modified":"2023-07-13T13:01:07","modified_gmt":"2023-07-13T13:01:07","slug":"r-wyodrebnij-kolumny-z-ramki-danych","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/r-wyodrebnij-kolumny-z-ramki-danych\/","title":{"rendered":"Jak wyodr\u0119bni\u0107 okre\u015blone kolumny z ramki danych w r"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Aby wyodr\u0119bni\u0107 okre\u015blone kolumny z ramki danych w R, mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cych metod:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Metoda 1: Wyodr\u0119bnij okre\u015blone kolumny przy u\u017cyciu Base R<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df[c(' <span style=\"color: #ff0000;\">col1<\/span> ', ' <span style=\"color: #ff0000;\">col3<\/span> ', ' <span style=\"color: #ff0000;\">col4<\/span> ')]\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metoda 2: Wyodr\u0119bnij okre\u015blone kolumny za pomoc\u0105 dplyr<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (dplyr)\n<\/span>\ndf %&gt;%\n  select(col1, col3, col4)\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Poni\u017csze przyk\u0142ady pokazuj\u0105, jak u\u017cywa\u0107 ka\u017cdej metody z nast\u0119puj\u0105c\u0105 ramk\u0105 danych w R:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame\n<\/span>df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (team=c('A', 'B', 'C', 'D', 'E'),\n                 points=c(99, 90, 86, 88, 95),\n                 assists=c(33, 28, 31, 39, 34),\n                 rebounds=c(30, 28, 24, 24, 28),\n                 steals=c(9, 12, 4, 7, 8))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  team points assists rebounds steals\n1 A 99 33 30 9\n2 B 90 28 28 12\n3 C 86 31 24 4\n4 D 88 39 24 7\n5 E 95 34 28 8<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Metoda 1: Wyodr\u0119bnij okre\u015blone kolumny przy u\u017cyciu Base R<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak wyodr\u0119bni\u0107 kolumny <strong>zespo\u0142u<\/strong> , <strong>asyst<\/strong> i <strong>zbi\u00f3rek<\/strong> przy u\u017cyciu podstawowego R:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#select 'team', 'assists' and 'rebounds' columns\n<\/span>df[c(' <span style=\"color: #ff0000;\">team<\/span> ', ' <span style=\"color: #ff0000;\">assists<\/span> ', ' <span style=\"color: #ff0000;\">rebounds<\/span> ')]\n\n  team assists rebounds\n1 to 33 30\n2 B 28 28\n3 C 31 24\n4 D 39 24\n5 E 34 28\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Zauwa\u017c, \u017ce ka\u017cda z okre\u015blonych przez nas kolumn zosta\u0142a wyodr\u0119bniona z ramki danych.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Pami\u0119taj r\u00f3wnie\u017c, \u017ce mo\u017cesz tak\u017ce wyodr\u0119bni\u0107 te kolumny wed\u0142ug pozycji indeksu:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#select columns in index positions 1, 3 and 4\n<\/span>df[c(1, 3, 4)]\n\n  team assists rebounds\n1 to 33 30\n2 B 28 28\n3 C 31 24\n4 D 39 24\n5 E 34 28\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Ta sk\u0142adnia wyodr\u0119bnia kolumny w pozycjach indeksu kolumn 1, 3 i 4.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Metoda 2: Wyodr\u0119bnij okre\u015blone kolumny za pomoc\u0105 dplyr<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak wyodr\u0119bni\u0107 kolumny <strong>zesp\u00f3\u0142<\/strong> , <strong>asysty<\/strong> i <strong>zbi\u00f3rki<\/strong> przy u\u017cyciu <strong>funkcjiselect()<\/strong> z pakietu <a href=\"https:\/\/dplyr.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">dplyr<\/a> :<\/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\n<span style=\"color: #008080;\">#select 'team', 'assists' and 'rebounds' columns\n<\/span>df %&gt;%\n  select(team, assists, rebounds)\n\n  team assists rebounds\n1 to 33 30\n2 B 28 28\n3 C 31 24\n4 D 39 24\n5 E 34 28\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Zauwa\u017c, \u017ce ka\u017cda z okre\u015blonych przez nas kolumn zosta\u0142a wyodr\u0119bniona z ramki danych.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Pami\u0119taj r\u00f3wnie\u017c, \u017ce mo\u017cesz tak\u017ce wyodr\u0119bni\u0107 te kolumny wed\u0142ug pozycji indeksu:<\/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\n<span style=\"color: #008080;\">#select 'team', 'assists' and 'rebounds' columns\n<\/span>df %&gt;%\n  select(1, 3, 4)\n\n  team assists rebounds\n1 to 33 30\n2 B 28 28\n3 C 31 24\n4 D 39 24\n5 E 34 28<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Ta sk\u0142adnia wyodr\u0119bnia kolumny w pozycjach indeksu kolumn 1, 3 i 4.<\/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 j\u0119zyku R:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pl\/dplyr-wybierz-kolumny-numeryczne\/\" target=\"_blank\" rel=\"noopener\">Jak wybra\u0107 tylko kolumny numeryczne w R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/usun-wiele-kolumn-w-r\/\" target=\"_blank\" rel=\"noopener\">Jak usun\u0105\u0107 wiele kolumn w R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/zmien-kolejnosc-kolumn-r\/\" target=\"_blank\" rel=\"noopener\">Jak zmieni\u0107 uk\u0142ad kolumn w R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aby wyodr\u0119bni\u0107 okre\u015blone kolumny z ramki danych w R, mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cych metod: Metoda 1: Wyodr\u0119bnij okre\u015blone kolumny przy u\u017cyciu Base R df[c(&#8217; col1 &#8217;, &#8217; col3 &#8217;, &#8217; col4 &#8217;)] Metoda 2: Wyodr\u0119bnij okre\u015blone kolumny za pomoc\u0105 dplyr library (dplyr) df %&gt;% select(col1, col3, col4) Poni\u017csze przyk\u0142ady pokazuj\u0105, jak u\u017cywa\u0107 ka\u017cdej metody z nast\u0119puj\u0105c\u0105 [&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-4109","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 wyodr\u0119bni\u0107 okre\u015blone kolumny z ramki danych w R - Statorials<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak wyodr\u0119bni\u0107 okre\u015blone kolumny z ramki danych w j\u0119zyku 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-wyodrebnij-kolumny-z-ramki-danych\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak wyodr\u0119bni\u0107 okre\u015blone kolumny z ramki danych w R - Statorials\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak wyodr\u0119bni\u0107 okre\u015blone kolumny z ramki danych w j\u0119zyku R, podaj\u0105c kilka przyk\u0142ad\u00f3w.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/r-wyodrebnij-kolumny-z-ramki-danych\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-13T13:01:07+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\/r-wyodrebnij-kolumny-z-ramki-danych\/\",\"url\":\"https:\/\/statorials.org\/pl\/r-wyodrebnij-kolumny-z-ramki-danych\/\",\"name\":\"Jak wyodr\u0119bni\u0107 okre\u015blone kolumny z ramki danych w R - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-13T13:01:07+00:00\",\"dateModified\":\"2023-07-13T13:01:07+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak wyodr\u0119bni\u0107 okre\u015blone kolumny z ramki danych w j\u0119zyku R, podaj\u0105c kilka przyk\u0142ad\u00f3w.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/r-wyodrebnij-kolumny-z-ramki-danych\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/r-wyodrebnij-kolumny-z-ramki-danych\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/r-wyodrebnij-kolumny-z-ramki-danych\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak wyodr\u0119bni\u0107 okre\u015blone kolumny z ramki danych w r\"}]},{\"@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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