{"id":3329,"date":"2023-07-18T01:47:14","date_gmt":"2023-07-18T01:47:14","guid":{"rendered":"https:\/\/statorials.org\/tr\/rnin-ilk-n-satirini-sec\/"},"modified":"2023-07-18T01:47:14","modified_gmt":"2023-07-18T01:47:14","slug":"rnin-ilk-n-satirini-sec","status":"publish","type":"post","link":"https:\/\/statorials.org\/tr\/rnin-ilk-n-satirini-sec\/","title":{"rendered":"R'de bir veri \u00e7er\u00e7evesinin ilk n sat\u0131r\u0131 nas\u0131l se\u00e7ilir (3 \u00f6rnek)"},"content":{"rendered":"

<\/p>\n

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R’deki bir veri \u00e7er\u00e7evesinin ilk N sat\u0131r\u0131n\u0131 se\u00e7mek i\u00e7in a\u015fa\u011f\u0131daki y\u00f6ntemlerden herhangi birini kullanabilirsiniz:<\/span><\/p>\n

Y\u00f6ntem 1: Base R’den head() i\u015flevini kullan\u0131n<\/strong><\/span><\/p>\n

 head(df, 3)\n<\/strong><\/pre>\n
 Y\u00f6ntem 2: Base R’den indekslemeyi kullanma<\/strong><\/span><\/p>\n
 df[1:3, ]\n<\/strong><\/pre>\n
 Y\u00f6ntem 3: dplyr’den dilim () i\u015flevini kullan\u0131n<\/strong><\/span><\/p>\n
 library<\/span> (dplyr)\n\ndf %>% slice(1:3)<\/strong><\/pre>\n
 A\u015fa\u011f\u0131daki \u00f6rnekler, her y\u00f6ntemin pratikte a\u015fa\u011f\u0131daki veri \u00e7er\u00e7evesiyle nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n
 #create data frame\n<\/span>df <- data. frame<\/span> (team=c('A', 'B', 'C', 'D', 'E', 'F', 'G'),\n                 points=c(99, 90, 86, 88, 95, 99, 91),\n                 assists=c(33, 28, 31, 39, 34, 35, 40))\n\n#view data frame\n<\/span>df\n\n  team points assists\n1 A 99 33\n2 B 90 28\n3 C 86 31\n4 D 88 39\n5 E 95 34\n6 F 99 35\n7 G 91 40\n<\/strong><\/pre>\n
 \u00d6rnek 1: Base R’den head() i\u015flevini kullanma<\/strong><\/span><\/h2>\n
 Bir veri blo\u011funun ilk N sat\u0131r\u0131n\u0131 se\u00e7menin bir yolu, R veritaban\u0131n\u0131n head()<\/strong> i\u015flevini kullanmakt\u0131r:<\/span><\/p>\n
 #select first 3 rows of data frame\nhead(df, 3)\n<\/span>\nteam points assists\n1 A 99 33\n2 B 90 28\n3 C 86 31<\/span><\/span><\/strong><\/pre>\n
 Head()<\/strong> i\u015flevini herhangi bir say\u0131sal arg\u00fcman olmadan kullan\u0131rsan\u0131z, R, veri \u00e7er\u00e7evesinin ilk 6 sat\u0131r\u0131n\u0131 otomatik olarak se\u00e7ecektir:<\/span><\/p>\n
 #select first 6 rows of data frame\nhead(df)<\/span>\n\nteam points assists\n1 A 99 33\n2 B 90 28\n3 C 86 31\n4 D 88 39\n5 E 95 34\n6 F 99 35\n<\/span><\/span><\/strong><\/pre>\n
 \u00d6rnek 2: Base R’den indekslemeyi kullanma<\/strong><\/span><\/h2>\n
 Bir veri blo\u011funun ilk N sat\u0131r\u0131n\u0131 se\u00e7menin ba\u015fka bir yolu da R tabanl\u0131 indeksleme s\u00f6zdizimini kullanmakt\u0131r:<\/span><\/p>\n
 #select first 3 rows of data frame\ndf[1:3, ]\n<\/span>\nteam points assists\n1 A 99 33\n2 B 90 28\n3 C 86 31<\/span><\/span><\/strong><\/pre>\n
 Bu s\u00f6zdizimini belirli bir s\u00fctunun yaln\u0131zca ilk N sat\u0131r\u0131n\u0131 se\u00e7mek i\u00e7in de kullanabilirsiniz:<\/span><\/p>\n
 #select first 3 rows of 'team' and 'points' columns only\ndf[1:3, c(' team<\/span> ', ' points<\/span> ')]\n<\/span>\nteam points\n1 to 99\n2 B 90\n3 C 86<\/span><\/span><\/strong><\/pre>\n
 \u00d6rnek 3: dplyr’den dilim() i\u015flevini kullan\u0131n<\/strong><\/span><\/h2>\n
 Bir veri \u00e7er\u00e7evesinin ilk N sat\u0131r\u0131n\u0131 se\u00e7menin ba\u015fka bir yolu da dplyr<\/a> paketindeki dilim()<\/strong> i\u015flevini kullanmakt\u0131r:<\/span><\/p>\n
 library<\/span> (dplyr)<\/span>\n\n#select first 3 rows of data frame\ndf %>% slice(1:3)\n<\/span>\nteam points assists\n1 A 99 33\n2 B 90 28\n3 C 86 31<\/span><\/span><\/strong><\/pre>\n
 Ek kaynaklar<\/strong><\/span><\/h2>\n
 A\u015fa\u011f\u0131daki e\u011fitimlerde R’de di\u011fer ortak g\u00f6revlerin nas\u0131l ger\u00e7ekle\u015ftirilece\u011fi a\u00e7\u0131klanmaktad\u0131r:<\/span><\/p>\n
 R’de bir veri \u00e7er\u00e7evesine sat\u0131rlar nas\u0131l eklenir<\/a>
 R’de yinelenen sat\u0131rlar nas\u0131l kald\u0131r\u0131l\u0131r
 R’de belirli sat\u0131rlar nas\u0131l toplan\u0131r<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
R’deki bir veri \u00e7er\u00e7evesinin ilk N sat\u0131r\u0131n\u0131 se\u00e7mek i\u00e7in a\u015fa\u011f\u0131daki y\u00f6ntemlerden herhangi birini kullanabilirsiniz: Y\u00f6ntem 1: Base R’den head() i\u015flevini kullan\u0131n head(df, 3) Y\u00f6ntem 2: Base R’den indekslemeyi kullanma df[1:3, ] Y\u00f6ntem 3: dplyr’den dilim () i\u015flevini kullan\u0131n library (dplyr) df %>% slice(1:3) A\u015fa\u011f\u0131daki \u00f6rnekler, her y\u00f6ntemin pratikte a\u015fa\u011f\u0131daki veri \u00e7er\u00e7evesiyle nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir: #create […]<\/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-3329","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"\nR'de bir veri \u00e7er\u00e7evesinin ilk N sat\u0131r\u0131 nas\u0131l se\u00e7ilir (3 \u00f6rnek) - 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 \u0130lgili:<\/strong> dplyr’da Slice() Fonksiyonu Nas\u0131l Kullan\u0131l\u0131r (\u00d6rneklerle)<\/a><\/span><\/p>\n