{"id":2636,"date":"2023-07-21T09:56:57","date_gmt":"2023-07-21T09:56:57","guid":{"rendered":"https:\/\/statorials.org\/nl\/sas-selecteer-de-eerste-n-rijen\/"},"modified":"2023-07-21T09:56:57","modified_gmt":"2023-07-21T09:56:57","slug":"sas-selecteer-de-eerste-n-rijen","status":"publish","type":"post","link":"https:\/\/statorials.org\/nl\/sas-selecteer-de-eerste-n-rijen\/","title":{"rendered":"Hoe u de eerste n rijen van een gegevensset in sas selecteert"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Dit zijn de twee meest voorkomende manieren om de eerste N rijen van een dataset in SAS te selecteren:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Methode 1: Selecteer de eerste rij<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #800080;\">data<\/span> first_row;\n    <span style=\"color: #3366ff;\">set<\/span> original_data;\n    <span style=\"color: #3366ff;\">if<\/span> _N_ = <span style=\"color: #008000;\">1<\/span> <span style=\"color: #3366ff;\">then<\/span> <span style=\"color: #3366ff;\">output<\/span> ;\n<span style=\"color: #800080;\">run<\/span> ;\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Methode 2: selecteer de eerste N rijen<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #800080;\">data<\/span> first_N_rows;\n    <span style=\"color: #3366ff;\">set<\/span> original_data;\n    <span style=\"color: #3366ff;\">if<\/span> _N_ &lt;= <span style=\"color: #008000;\">5<\/span> <span style=\"color: #3366ff;\">then<\/span> <span style=\"color: #3366ff;\">output<\/span> ; <span style=\"color: #008000;\">\/*select first 5 rows*\/<\/span>\n<span style=\"color: #800080;\">run<\/span> ;<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">De volgende voorbeelden laten zien hoe u elke methode kunt gebruiken met de volgende gegevensset in SAS:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">\/*create dataset*\/\n<\/span><span style=\"color: #800080;\">data<\/span> original_data;\n    <span style=\"color: #3366ff;\">input<\/span> team $pointsrebounds;\n    <span style=\"color: #3366ff;\">datalines<\/span> ;\nWarriors 25 8\nWizards 18 12\nRockets 22 6\nCeltics 24 11\nThunder 27 14\nSpurs 33 19\nNets 31 20\nMavericks 34 10\nKings 22 11\nPelicans 39 23\n;\n<span style=\"color: #800080;\">run<\/span> ;\n\n<span style=\"color: #008000;\">\/*view dataset*\/<\/span>\n<span style=\"color: #800080;\">proc print<\/span> <span style=\"color: #3366ff;\">data<\/span> = original_data;<\/strong><\/span> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-23239 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/aleatoiresas1.jpg\" alt=\"\" width=\"248\" height=\"283\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Voorbeeld 1: selecteer de eerste rij<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">De volgende code laat zien hoe u alleen de eerste rij van de gegevensset selecteert:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #800080;\"><span style=\"color: #008000;\">\/*create new dataset that contains only the first row*\/<\/span>\ndata<\/span> first_row;\n    <span style=\"color: #3366ff;\">set<\/span> original_data;\n    <span style=\"color: #3366ff;\">if<\/span> _N_ = <span style=\"color: #008000;\">1<\/span> <span style=\"color: #3366ff;\">then<\/span> <span style=\"color: #3366ff;\">output<\/span> ;\n<span style=\"color: #800080;\">run<\/span> ;\n\n<span style=\"color: #008000;\">\/*view new dataset*\/<\/span>\n<span style=\"color: #800080;\">proc print<\/span> <span style=\"color: #3366ff;\">data<\/span> =first_row;<\/strong><\/span> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-23246 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/n1.jpg\" alt=\"\" width=\"249\" height=\"65\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">We kunnen zien dat de nieuwe dataset alleen de eerste rij van de originele dataset bevat.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Voorbeeld 2: selecteer de eerste N rijen<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">De volgende code laat zien hoe u de eerste vijf rijen van de gegevensset selecteert:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #800080;\"><span style=\"color: #008000;\">\/*create new dataset that contains first 5 rows of original dataset*\/<\/span>\ndata<\/span> first_N_rows;\n    <span style=\"color: #3366ff;\">set<\/span> original_data;\n    <span style=\"color: #3366ff;\">if<\/span> _N_ &lt;= <span style=\"color: #008000;\">5<\/span> <span style=\"color: #3366ff;\">then<\/span> <span style=\"color: #3366ff;\">output<\/span> ;\n<span style=\"color: #800080;\">run<\/span> ;\n\n<span style=\"color: #008000;\">\/*view new dataset*\/<\/span>\n<span style=\"color: #800080;\">proc print<\/span> <span style=\"color: #3366ff;\">data<\/span> =first_N_rows;\n<\/strong><\/span><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-23247 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/n2.jpg\" alt=\"\" width=\"242\" height=\"155\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">We kunnen zien dat de nieuwe dataset alleen de eerste vijf rijen van de originele dataset bevat.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Om een ander aantal startrijen te selecteren, wijzigt u eenvoudig de waarde na <strong>_N_<\/strong> in de bovenstaande code.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Aanvullende bronnen<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">In de volgende zelfstudies wordt uitgelegd hoe u andere veelvoorkomende taken in SAS kunt uitvoeren:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/nl\/kort-geding-procedure-in-sas\/\" target=\"_blank\" rel=\"noopener\">Procedureoverzicht gebruiken in SAS<\/a><br \/> <a href=\"https:\/\/statorials.org\/nl\/proc-tabel-sas\/\" target=\"_blank\" rel=\"noopener\">Proc-tabel gebruiken in SAS<\/a><br \/> <a href=\"https:\/\/statorials.org\/nl\/sas-hernoemen-van-variabelen\/\" target=\"_blank\" rel=\"noopener\">Variabelen hernoemen in SAS<\/a><br \/> <a href=\"https:\/\/statorials.org\/nl\/zonder-nieuwe-variabelen-te-creeren\/\" target=\"_blank\" rel=\"noopener\">Nieuwe variabelen maken in SAS<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dit zijn de twee meest voorkomende manieren om de eerste N rijen van een dataset in SAS te selecteren: Methode 1: Selecteer de eerste rij data first_row; set original_data; if _N_ = 1 then output ; run ; Methode 2: selecteer de eerste N rijen data first_N_rows; set original_data; if _N_ &lt;= 5 then output [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-2636","post","type-post","status-publish","format-standard","hentry","category-gids"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hoe u de eerste N rijen van een dataset selecteert in SAS - Statorials<\/title>\n<meta name=\"description\" content=\"In deze zelfstudie wordt uitgelegd hoe u de eerste N rijen van een gegevensset in SAS selecteert, met verschillende voorbeelden.\" \/>\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\/nl\/sas-selecteer-de-eerste-n-rijen\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hoe u de eerste N rijen van een dataset selecteert in SAS - Statorials\" \/>\n<meta property=\"og:description\" content=\"In deze zelfstudie wordt uitgelegd hoe u de eerste N rijen van een gegevensset in SAS selecteert, met verschillende voorbeelden.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/nl\/sas-selecteer-de-eerste-n-rijen\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-21T09:56:57+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/aleatoiresas1.jpg\" \/>\n<meta name=\"author\" content=\"Dr.benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Verfasst von\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr.benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Gesch\u00e4tzte Lesezeit\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u00a0Minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/nl\/sas-selecteer-de-eerste-n-rijen\/\",\"url\":\"https:\/\/statorials.org\/nl\/sas-selecteer-de-eerste-n-rijen\/\",\"name\":\"Hoe u de eerste N rijen van een dataset selecteert in SAS - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/nl\/#website\"},\"datePublished\":\"2023-07-21T09:56:57+00:00\",\"dateModified\":\"2023-07-21T09:56:57+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\"},\"description\":\"In deze zelfstudie wordt uitgelegd hoe u de eerste N rijen van een gegevensset in SAS selecteert, met verschillende voorbeelden.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/nl\/sas-selecteer-de-eerste-n-rijen\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/nl\/sas-selecteer-de-eerste-n-rijen\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/nl\/sas-selecteer-de-eerste-n-rijen\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Thuis\",\"item\":\"https:\/\/statorials.org\/nl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Hoe u de eerste n rijen van een gegevensset in sas selecteert\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/nl\/#website\",\"url\":\"https:\/\/statorials.org\/nl\/\",\"name\":\"Statorials\",\"description\":\"Uw gids voor statistische competentie\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/nl\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"de\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\",\"name\":\"Dr.benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"de\",\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/image\/\",\"url\":\"http:\/\/statorials.org\/nl\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"http:\/\/statorials.org\/nl\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Dr.benjamin anderson\"},\"description\":\"Ik ben Benjamin, een gepensioneerde hoogleraar statistiek die nu een toegewijde Statorials-lesgever is. 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