{"id":2630,"date":"2023-07-21T10:33:37","date_gmt":"2023-07-21T10:33:37","guid":{"rendered":"https:\/\/statorials.org\/it\/set-di-dati-secondario-in-sas\/"},"modified":"2023-07-21T10:33:37","modified_gmt":"2023-07-21T10:33:37","slug":"set-di-dati-secondario-in-sas","status":"publish","type":"post","link":"https:\/\/statorials.org\/it\/set-di-dati-secondario-in-sas\/","title":{"rendered":"Come sottoinsiemi di dati in sas (3 esempi)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><span style=\"color: #000000;\">Ecco i tre modi pi\u00f9 comuni per creare sottoinsiemi di un set di dati in SAS:<\/span><\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Metodo 1: scegli quali colonne mantenere<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #800080;\">data<\/span> new_data;\n    <span style=\"color: #3366ff;\">set<\/span> original_data;\n    <span style=\"color: #3366ff;\">keep<\/span> var1 var3;\n<span style=\"color: #800080;\">run<\/span> ;\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metodo 2: scegli quali colonne eliminare<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #800080;\">data<\/span> <span style=\"color: #000000;\">new_data;\n    <\/span><span style=\"color: #3366ff;\">set<\/span> <span style=\"color: #000000;\">original_data;\n    <\/span><span style=\"color: #3366ff;\">dropvar4<\/span> <span style=\"color: #000000;\">;\n<\/span><span style=\"color: #800080;\">run<\/span> <span style=\"color: #000000;\">;<\/span><\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metodo 3: scegli quali righe mantenere in base alla condizione<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #800080;\">data<\/span> new_data;\n    <span style=\"color: #3366ff;\">set<\/span> original_data;\n    <span style=\"color: #3366ff;\">if<\/span> var1 &lt; <span style=\"color: #008000;\">25<\/span> <span style=\"color: #3366ff;\">then<\/span> delete;\n<span style=\"color: #800080;\">run<\/span> ;<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">Gli esempi seguenti mostrano come utilizzare ciascun metodo con il seguente set di dati in SAS:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">\/*create dataset*\/\n<span style=\"color: #000000;\"><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\n;\n<span style=\"color: #800080;\">run<\/span> ;\n\n<span style=\"color: #008000;\">\/*view dataset*\/\n<\/span><span style=\"color: #800080;\">proc print<\/span> <span style=\"color: #3366ff;\">data<\/span> = original_data;<\/span><\/span><\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-23197 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sous-ensemble3.jpg\" alt=\"\" width=\"253\" height=\"213\" srcset=\"\" sizes=\"\"><\/p>\n<h3> <span style=\"color: #000000;\"><b>Esempio 1: <strong>scegli quali colonne mantenere<\/strong><\/b><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Il codice seguente mostra come creare un sottoinsieme di un set di dati utilizzando l&#8217;istruzione <strong>KEEP<\/strong> per mantenere solo determinate colonne:<\/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*\/<\/span>\ndata<\/span> new_data;\n    <span style=\"color: #3366ff;\">set<\/span> original_data;\n    <span style=\"color: #3366ff;\">keep<\/span> team points;\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> = new_data;\n<\/strong><\/span><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-23195 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sous-ensemble1.jpg\" alt=\"\" width=\"167\" height=\"204\" srcset=\"\" sizes=\"\"><\/p>\n<h3> <span style=\"color: #000000;\"><b>Esempio 2: <strong>scegli le colonne da eliminare<\/strong><\/b><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Il codice seguente mostra come creare un sottoinsieme di un set di dati utilizzando l&#8217;istruzione <b>DROP<\/b> per eliminare colonne specifiche:<\/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*\/<\/span>\ndata<\/span> <span style=\"color: #000000;\">new_data;\n    <\/span><span style=\"color: #3366ff;\">set<\/span> <span style=\"color: #000000;\">original_data;\n    <\/span><span style=\"color: #3366ff;\">drop<\/span> <span style=\"color: #000000;\">points;\n<\/span><span style=\"color: #800080;\">run<\/span> <span style=\"color: #000000;\">;\n\n<span style=\"color: #008000;\">\/*view new dataset*\/<\/span>\n<span style=\"color: #800080;\">proc print<\/span> <span style=\"color: #3366ff;\">data<\/span> = new_data;\n<\/span><\/strong><\/span><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-23196 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sous-ensemble2.jpg\" alt=\"\" width=\"194\" height=\"210\" srcset=\"\" sizes=\"\"><\/p>\n<h3> <span style=\"color: #000000;\"><b>Esempio 3: <strong>scegli quali righe mantenere in base alla condizione<\/strong><\/b><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Il codice seguente mostra come creare un sottoinsieme di un set di dati utilizzando l&#8217;istruzione <b>DELETE<\/b> per eliminare righe specifiche dal set di dati il cui valore nella colonna <strong>punto<\/strong> \u00e8 inferiore a 25:<\/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*\/<\/span>\ndata<\/span> new_data;\n    <span style=\"color: #3366ff;\">set<\/span> original_data;\n    <span style=\"color: #3366ff;\">if<\/span> points &lt; <span style=\"color: #008000;\">25<\/span> <span style=\"color: #3366ff;\">then<\/span> delete;\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> = new_data;\n<\/strong><\/span><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-23198 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sous-ensemble4.jpg\" alt=\"\" width=\"251\" height=\"137\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Puoi anche usare l&#8217; <strong>OR<\/strong> \u201c <strong>|<\/strong> &#8221; per rimuovere le linee in cui <strong>i punti<\/strong> sono inferiori a 25 <em>o<\/em> <strong>i rimbalzi<\/strong> sono inferiori a 10:<\/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*\/<\/span>\ndata<\/span> new_data;\n    <span style=\"color: #3366ff;\">set<\/span> original_data;\n    <span style=\"color: #3366ff;\">if<\/span> points &lt; <span style=\"color: #008000;\">25 <span style=\"color: #000000;\">| rebounds &lt;<\/span> 10<\/span> <span style=\"color: #3366ff;\">then<\/span> delete;\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> = new_data;<\/strong><\/span> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-23199 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sous-ensemble5.jpg\" alt=\"\" width=\"257\" height=\"112\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Puoi anche utilizzare l&#8217;operatore <strong>AND<\/strong> &#8221; <strong>&amp;<\/strong> &#8221; per rimuovere le righe in cui <strong>i punti<\/strong> sono inferiori a 25 <i>e<\/i> <strong>i rimbalzi<\/strong> sono inferiori a 10:<\/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*\/<\/span>\ndata<\/span> new_data;\n    <span style=\"color: #3366ff;\">set<\/span> original_data;\n    <span style=\"color: #3366ff;\">if<\/span> points &lt; <span style=\"color: #008000;\">25 <span style=\"color: #000000;\">&amp; rebounds &lt;<\/span> 10<\/span> <span style=\"color: #3366ff;\">then<\/span> delete;\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> = new_data;<\/strong><\/span> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-23200 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sous-ensemble6.jpg\" alt=\"\" width=\"258\" height=\"193\" srcset=\"\" sizes=\"\"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Risorse addizionali<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">I seguenti tutorial spiegano come eseguire altre attivit\u00e0 comuni in SAS:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/it\/sas-rinominare-le-variabili\/\" target=\"_blank\" rel=\"noopener\">Come rinominare le variabili in SAS<\/a><br \/> <a href=\"https:\/\/statorials.org\/it\/senza-creare-nuove-variabili\/\" target=\"_blank\" rel=\"noopener\">Come creare nuove variabili in SAS<\/a><br \/> <a href=\"https:\/\/statorials.org\/it\/catena-sostitutiva-della-camera-dequilibrio\/\" target=\"_blank\" rel=\"noopener\">Come sostituire i caratteri in una stringa in SAS<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ecco i tre modi pi\u00f9 comuni per creare sottoinsiemi di un set di dati in SAS: Metodo 1: scegli quali colonne mantenere data new_data; set original_data; keep var1 var3; run ; Metodo 2: scegli quali colonne eliminare data new_data; set original_data; dropvar4 ; run ; Metodo 3: scegli quali righe mantenere in base alla condizione [&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":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Come sottoinsiemi di dati in SAS (3 esempi) - Statorials<\/title>\n<meta name=\"description\" content=\"Questo tutorial spiega come sottoinsiemi di dati in SAS, con diversi esempi.\" \/>\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\/it\/set-di-dati-secondario-in-sas\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Come sottoinsiemi di dati in SAS (3 esempi) - Statorials\" \/>\n<meta property=\"og:description\" content=\"Questo tutorial spiega come sottoinsiemi di dati in SAS, con diversi esempi.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/it\/set-di-dati-secondario-in-sas\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-21T10:33:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sous-ensemble3.jpg\" \/>\n<meta name=\"author\" content=\"Benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuti\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/it\/set-di-dati-secondario-in-sas\/\",\"url\":\"https:\/\/statorials.org\/it\/set-di-dati-secondario-in-sas\/\",\"name\":\"Come sottoinsiemi di dati in SAS (3 esempi) - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/it\/#website\"},\"datePublished\":\"2023-07-21T10:33:37+00:00\",\"dateModified\":\"2023-07-21T10:33:37+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/it\/#\/schema\/person\/0896f191fb9fb019f2cd8623112cb3ae\"},\"description\":\"Questo tutorial spiega come sottoinsiemi di dati in SAS, con diversi esempi.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/it\/set-di-dati-secondario-in-sas\/#breadcrumb\"},\"inLanguage\":\"it-IT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/it\/set-di-dati-secondario-in-sas\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/it\/set-di-dati-secondario-in-sas\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Casa\",\"item\":\"https:\/\/statorials.org\/it\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Come sottoinsiemi di dati in sas (3 esempi)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/it\/#website\",\"url\":\"https:\/\/statorials.org\/it\/\",\"name\":\"Statorials\",\"description\":\"La tua guida all&#039;alfabetizzazione statistica!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/it\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"it-IT\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/it\/#\/schema\/person\/0896f191fb9fb019f2cd8623112cb3ae\",\"name\":\"Benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"it-IT\",\"@id\":\"https:\/\/statorials.org\/it\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/it\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/it\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin anderson\"},\"description\":\"Ciao, sono Benjamin, un professore di statistica in pensione diventato insegnante dedicato di Statorials. 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