{"id":2886,"date":"2023-07-20T06:06:55","date_gmt":"2023-07-20T06:06:55","guid":{"rendered":"https:\/\/statorials.org\/pl\/zamek-petli\/"},"modified":"2023-07-20T06:06:55","modified_gmt":"2023-07-20T06:06:55","slug":"zamek-petli","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/zamek-petli\/","title":{"rendered":"Kompletny przewodnik po p\u0119tlach do w sas-ie"},"content":{"rendered":"

<\/p>\n

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P\u0119tli DO<\/strong> w SAS-ie mo\u017cna u\u017cy\u0107 do wykonania<\/em> akcji okre\u015blon\u0105 liczb\u0119 razy.<\/span><\/p>\n

W SAS-ie istniej\u0105 trzy podstawowe p\u0119tle DO:<\/span><\/p>\n

1. ZROB p\u0119tl\u0119<\/strong><\/span><\/p>\n

 data<\/span> data1;\nx<\/span> = 0;\ndo<\/span> i = 1 to<\/span> 10;\n   x<\/span> = i*4;\n   output<\/span> ;\nend<\/span> ;\nrun<\/span> ;<\/strong><\/span><\/pre>\n
 Co robi<\/strong> : Ta p\u0119tla wykonuje 10 iteracji, od i = 1 do 10, gdzie warto\u015b\u0107 w ka\u017cdym wierszu jest r\u00f3wna i pomno\u017cona przez 4.<\/span><\/p>\n
 Kiedy si\u0119 zatrzymuje<\/strong> : Ta p\u0119tla zatrzymuje si\u0119 dopiero po 10 iteracjach.<\/span><\/p>\n
 2. ZR\u00d3B W P\u0118TLI<\/strong><\/span><\/p>\n
 data<\/span> data2;\nx<\/span> = 0;\ndo<\/span> i = 1 to<\/span> 10 while(x < 20<\/span> );\n   x<\/span> = i*4;\n   output<\/span> ;\nend<\/span> ;\nrun<\/span> ;<\/strong><\/span><\/pre>\n
 Co robi<\/strong> : Ta p\u0119tla podejmie pr\u00f3b\u0119 wykonania 10 iteracji, od i = 1 do 10, gdzie warto\u015b\u0107 ka\u017cdego wiersza jest r\u00f3wna i pomno\u017cona przez 4.<\/span><\/p>\n
 Kiedy si\u0119 zatrzyma<\/strong> : Ta p\u0119tla zatrzyma si\u0119, gdy warto\u015b\u0107 x przekroczy 20 lub gdy zostanie uko\u0144czonych 10 iteracji, w zale\u017cno\u015bci od tego, co nast\u0105pi wcze\u015bniej.<\/span><\/p>\n
 3. Wykonaj a\u017c do p\u0119tli<\/strong><\/span><\/p>\n
 data<\/span> data3;\nx<\/span> = 0;\ndo<\/span> i = 1 to<\/span> 10 until(x > 30<\/span> );\n   x<\/span> = i*4;\n   output<\/span> ;\nend<\/span> ;\nrun<\/span> ;<\/strong><\/span><\/pre>\n
 Co robi<\/strong> : Ta p\u0119tla podejmie pr\u00f3b\u0119 wykonania 10 iteracji, od i = 1 do 10, gdzie warto\u015b\u0107 ka\u017cdego wiersza jest r\u00f3wna i pomno\u017cona przez 4.<\/span><\/p>\n
 Kiedy si\u0119 zatrzyma<\/strong> : p\u0119tla zatrzyma si\u0119, gdy warto\u015b\u0107 x przekroczy 30 lub gdy zostanie uko\u0144czonych 10 iteracji, w zale\u017cno\u015bci od tego, co nast\u0105pi wcze\u015bniej.<\/span><\/p>\n
 Poni\u017csze przyk\u0142ady pokazuj\u0105, jak w praktyce u\u017cywa\u0107 ka\u017cdej p\u0119tli DO.<\/span><\/p>\n
 Przyk\u0142ad 1: p\u0119tla DO<\/b><\/span><\/h3>\n
 Mo\u017cemy u\u017cy\u0107 nast\u0119puj\u0105cej p\u0119tli DO<\/strong> , aby utworzy\u0107 zestaw danych sk\u0142adaj\u0105cy si\u0119 z 10 wierszy:<\/span> <\/p>\n
 \/*use DO loop to create dataset*\/\ndata<\/span> data1;\nx<\/span> = 0;\ndo<\/span> i = 1 to<\/span> 10;\n   x<\/span> = i*4;\n   output<\/span> ;\nend<\/span> ;\nrun<\/span> ;<\/span>\n\n\/*view dataset*\/\nproc print<\/span> data<\/span> =data1;\n<\/span><\/span><\/strong><\/pre>\n
\"\"<\/p>\n
 Wynikiem jest zbi\u00f3r danych zawieraj\u0105cy 10 wierszy, gdzie warto\u015bci w kolumnie i mieszcz\u0105 si\u0119 w zakresie od 1 do 10, a warto\u015bci w kolumnie x mieszcz\u0105 si\u0119 w zakresie od 4 do 40.<\/span><\/p>\n
 Pami\u0119taj, \u017ce mo\u017cesz u\u017cy\u0107 drop i<\/strong> , aby usun\u0105\u0107 kolumn\u0119 indeksu ze zbioru danych:<\/span> <\/p>\n
 \/*use DO loop to create dataset*\/\ndata<\/span> data1;\nx<\/span> = 0;\ndo<\/span> i = 1 to<\/span> 10;\n   x<\/span> = i*4;\n   output<\/span> ;\nend<\/span> ;\ndrop<\/span> i;\nrun<\/span> ;<\/span>\n\n\/*view dataset*\/\nproc print<\/span> data<\/span> =data1;<\/span><\/span><\/strong> <\/pre>\n
\"\"<\/p>\n
 Przyk\u0142ad 2: P\u0119tla DO WHILE<\/b><\/span><\/h3>\n
 Mo\u017cemy u\u017cy\u0107 nast\u0119puj\u0105cej p\u0119tli DO WHILE,<\/strong> aby utworzy\u0107 zbi\u00f3r danych ze zmienn\u0105 i od i = 1 do 10, gdzie warto\u015b\u0107 ka\u017cdego wiersza jest r\u00f3wna i pomno\u017cona przez 4 , podczas gdy<\/em> x jest mniejsze ni\u017c 20:<\/span> <\/p>\n
 \/*use DO WHILE loop to create dataset*\/\ndata<\/span> data2;\nx<\/span> = 0;\ndo<\/span> i = 1 to<\/span> 10 while<\/span> (x < 20<\/span> );\n   x<\/span> = i*4;\n   output<\/span> ;\nend<\/span> ;\nrun<\/span> ;<\/span>\n\n\/*view dataset*\/\nproc print<\/span> data<\/span> =data2;<\/span><\/span><\/strong> <\/pre>\n
\"\"<\/p>\n
 Zauwa\u017c, \u017ce p\u0119tla przesta\u0142a tworzy\u0107 wiersze, gdy xa osi\u0105gn\u0119\u0142o 20.<\/span><\/p>\n
 Przyk\u0142ad 3: P\u0119tla DO UNTIL<\/b><\/span><\/h3>\n
 Mo\u017cemy u\u017cy\u0107 nast\u0119puj\u0105cej p\u0119tli DO UNTIL<\/strong> , aby utworzy\u0107 zbi\u00f3r danych ze zmienn\u0105 i od i = 1 do 10, gdzie warto\u015b\u0107 ka\u017cdego wiersza jest r\u00f3wna i pomno\u017cona przez 4, a\u017c<\/i> x b\u0119dzie wi\u0119ksze ni\u017c 30:<\/span> <\/p>\n
 \/*use DO UNTIL loop to create dataset*\/\ndata<\/span> data3;\nx<\/span> = 0;\ndo<\/span> i = 1 to<\/span> 10 until<\/span> (x > 30<\/span> );\n   x<\/span> = i*4;\n   output<\/span> ;\nend<\/span> ;\nrun<\/span> ;<\/span>\n\n\/*view dataset*\/\nproc print<\/span> data<\/span> =data3;<\/span><\/span><\/strong> <\/pre>\n
\"\"<\/p>\n
 Zauwa\u017c, \u017ce p\u0119tla przesta\u0142a tworzy\u0107 wiersze, gdy x przekroczy\u0142o 30.<\/span><\/p>\n
 Dodatkowe zasoby<\/strong><\/span><\/h3>\n
 Poni\u017csze samouczki wyja\u015bniaj\u0105, jak wykonywa\u0107 inne typowe zadania w SAS-ie:<\/span><\/p>\n
 Jak normalizowa\u0107 dane w SAS-ie<\/a>
 Jak usun\u0105\u0107 duplikaty w SAS-ie<\/a>
 Jak zast\u0105pi\u0107 brakuj\u0105ce warto\u015bci zerem w SAS-ie<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
P\u0119tli DO w SAS-ie mo\u017cna u\u017cy\u0107 do wykonania akcji okre\u015blon\u0105 liczb\u0119 razy. W SAS-ie istniej\u0105 trzy podstawowe p\u0119tle DO: 1. ZROB p\u0119tl\u0119 data data1; x = 0; do i = 1 to 10; x = i*4; output ; end ; run ; Co robi : Ta p\u0119tla wykonuje 10 iteracji, od i = 1 do […]<\/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-2886","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"\nKompletny przewodnik po p\u0119tlach DO w SAS-ie \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"Ten samouczek zawiera kompletny przewodnik po p\u0119tli DO w SAS-ie, zawieraj\u0105cy 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\/zamek-petli\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kompletny przewodnik po p\u0119tlach DO w SAS-ie \u2013 Statorials\" \/>\n<meta property=\"og:description\" content=\"Ten samouczek zawiera kompletny przewodnik po p\u0119tli DO w SAS-ie, zawieraj\u0105cy kilka przyk\u0142ad\u00f3w.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/zamek-petli\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-20T06:06:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/doloop1.jpg\" \/>\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=\"3 minuty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pl\/zamek-petli\/\",\"url\":\"https:\/\/statorials.org\/pl\/zamek-petli\/\",\"name\":\"Kompletny przewodnik po p\u0119tlach DO w SAS-ie \u2013 Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-20T06:06:55+00:00\",\"dateModified\":\"2023-07-20T06:06:55+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"Ten samouczek zawiera kompletny przewodnik po p\u0119tli DO w SAS-ie, zawieraj\u0105cy kilka przyk\u0142ad\u00f3w.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/zamek-petli\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/zamek-petli\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/zamek-petli\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Kompletny przewodnik po p\u0119tlach do w sas-ie\"}]},{\"@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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