{"id":2619,"date":"2023-07-21T11:47:01","date_gmt":"2023-07-21T11:47:01","guid":{"rendered":"https:\/\/statorials.org\/tr\/eger-oyleyse-yapma\/"},"modified":"2023-07-21T11:47:01","modified_gmt":"2023-07-21T11:47:01","slug":"eger-oyleyse-yapma","status":"publish","type":"post","link":"https:\/\/statorials.org\/tr\/eger-oyleyse-yapma\/","title":{"rendered":"Sas'ta if-then-do nas\u0131l kullan\u0131l\u0131r (\u00f6rneklerle)"},"content":{"rendered":"

<\/p>\n

\n

Bir ko\u015fulun do\u011fru olmas\u0131 durumunda<\/em> bir ifade blo\u011funu ger\u00e7ekle\u015ftirmek<\/em> i\u00e7in SAS’ta IF-THEN-DO<\/strong> ifadesini kullanabilirsiniz.<\/span><\/p>\n

Bu ifade a\u015fa\u011f\u0131daki temel s\u00f6zdizimini kullan\u0131r:<\/span><\/p>\n

 if<\/span> var1 = \" value<\/span> \"<\/span> then<\/span> do<\/span> ;\n    new_var2 = 10;\n    new_var3 = 5;\n<\/span>end<\/span> ;\n<\/span><\/strong><\/span><\/pre>\n
 Not<\/strong> : Tek bir<\/em> ifadeyi ger\u00e7ekle\u015ftirmek istedi\u011finizde IF-THEN ifadesi kullan\u0131l\u0131r. Birden fazla ifade ger\u00e7ekle\u015ftirmek istedi\u011finizde IF-THEN-DO ifadesi kullan\u0131l\u0131r.<\/span><\/span><\/p>\n
 A\u015fa\u011f\u0131daki \u00f6rnek, IF-THEN-DO<\/strong> ifadesinin pratikte nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir.<\/span><\/p>\n
 \u00d6rnek: SAS’ta IF-THEN-DO<\/strong><\/b><\/span><\/h3>\n
 Diyelim ki SAS’ta iki ma\u011fazan\u0131n birbirini takip eden g\u00fcnlerde yapt\u0131\u011f\u0131 toplam sat\u0131\u015flar\u0131 g\u00f6steren a\u015fa\u011f\u0131daki veri setine sahibiz:<\/span> <\/p>\n
 \/*create dataset*\/\n<\/span>data<\/span> original_data;\n    input<\/span> store $sales;\n    datalines<\/span> ;\nAt 14\nAt 19\nAt 22\nAt 20\nAt 16\nAt 26\nB40\nB43\nB29\nB 30\nB35\nB 33\n;\nrun<\/span> ;\n\n\/*view dataset*\/\n<\/span>proc print<\/span> data<\/span> = original_data;<\/strong><\/span> <\/pre>\n
\"\"<\/p>\n
 Orijinal veri setinde ma\u011fazan\u0131n “A”ya e\u015fit olmas\u0131 durumunda belirli de\u011ferleri alan iki yeni de\u011fi\u015fken olu\u015fturmak i\u00e7in a\u015fa\u011f\u0131daki IF-THEN-DO ifadesini kullanabiliriz:<\/span> <\/p>\n
 \/*create new dataset*\/\n<\/span>data<\/span> new_data;\n<\/span>set<\/span> original_data;\n<\/span>if<\/span> store = \"<\/span> A<\/span> \"<\/span> then do<\/span> ;\n    region=\"<\/span> East<\/span> \";\n    country=\"<\/span> Canada<\/span> \";\n<\/span>end<\/span> ;\n<\/span>run<\/span> ;\n\n<\/span>\/*view new dataset*\/\n<\/span>proc print<\/span> data<\/span> =new_data;<\/span><\/strong> <\/pre>\n
\"SAS'ta<\/p>\n
 Bu kod par\u00e7as\u0131 \u015fu \u015fekilde \u00e7al\u0131\u015ft\u0131:<\/span><\/p>\n
 Ma\u011fazan\u0131n de\u011feri “A” ise “Do\u011fu” de\u011feriyle b\u00f6lge<\/strong> adl\u0131 yeni bir de\u011fi\u015fken ,<\/em> “Kanada” de\u011feriyle de \u00fclke<\/strong> ad\u0131 verilen yeni bir de\u011fi\u015fken olu\u015fturuldu.<\/span><\/p>\n
 Birden fazla IF-THEN-DO ifadesini de kullanabilece\u011fimizi unutmay\u0131n:<\/span><\/span> <\/p>\n
 \/*create new dataset*\/\n<\/span>data<\/span> new_data;\n<\/span>set<\/span> original_data;\n\n<\/span>if<\/span> store = \"<\/span> A<\/span> \"<\/span> then do<\/span> ;\n    region=\" East<\/span> \";\n    country=\" Canada<\/span> \";\n<\/span>end<\/span> ;\n\n    if<\/span> store = \" B<\/span> \" then do<\/span> ;\n    region=\" West<\/span> \";\n    country=\" USA<\/span> \";\n    end<\/span> ; \n<\/span>run<\/span> ;\n\n<\/span>\/*view new dataset*\/\n<\/span>proc print<\/span> data<\/span> =new_data;<\/span><\/strong> <\/pre>\n
\"\"<\/p>\n
 Bu kod par\u00e7as\u0131 \u015fu \u015fekilde \u00e7al\u0131\u015ft\u0131:<\/span><\/p>\n