{"id":2116,"date":"2023-07-23T15:17:32","date_gmt":"2023-07-23T15:17:32","guid":{"rendered":"https:\/\/statorials.org\/cn\/dplyr-%e6%8c%89%e7%b4%a2%e5%bc%95%e9%80%89%e6%8b%a9%e5%88%97\/"},"modified":"2023-07-23T15:17:32","modified_gmt":"2023-07-23T15:17:32","slug":"dplyr-%e6%8c%89%e7%b4%a2%e5%bc%95%e9%80%89%e6%8b%a9%e5%88%97","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/dplyr-%e6%8c%89%e7%b4%a2%e5%bc%95%e9%80%89%e6%8b%a9%e5%88%97\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 dplyr \u6309\u7d22\u5f15\u9009\u62e9\u5217"},"content":{"rendered":"

<\/p>\n

\n

\u60a8\u53ef\u4ee5\u5728 dplyr \u4e2d\u4f7f\u7528\u4ee5\u4e0b\u57fa\u672c\u8bed\u6cd5\u6309\u7d22\u5f15\u4f4d\u7f6e\u9009\u62e9\u6570\u636e\u6846\u5217\uff1a<\/span><\/p>\n

 #select columns in specific index positions<\/span>\ndf %>%\n  select(1, 4, 5)\n\n#exclude columns in specific index positions<\/span>\ndf %>%\n  select(-c(1,2))<\/strong><\/pre>\n
\u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u5728\u5b9e\u8df5\u4e2d\u4f7f\u7528\u4ee5\u4e0b\u6570\u636e\u6846\u4f7f\u7528\u6b64\u8bed\u6cd5\uff1a<\/span><\/p>\n
 #create data frame<\/span>\ndf <- data. frame<\/span> (team=c('A', 'B', 'C', 'D', 'E'),\n                 points=c(99, 90, 86, 88, 95),\n                 assists=c(33, 28, 31, 39, 34),\n                 rebounds=c(30, 28, 24, 24, 28),\n                 blocks=c(14, 19, 22, 18, 15))\n\n#view data frame\n<\/span>df\n\n  team points assists rebounds blocks\n1 A 99 33 30 14\n2 B 90 28 28 19\n3 C 86 31 24 22\n4 D 88 39 24 18\n5 E 95 34 28 15\n<\/strong><\/pre>\n
\u793a\u4f8b 1\uff1a\u9009\u62e9\u7279\u5b9a\u7d22\u5f15\u4f4d\u7f6e\u7684\u5217<\/strong><\/span><\/h3>\n
\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u4e86\u5982\u4f55\u9009\u62e9\u7279\u5b9a\u7d22\u5f15\u4f4d\u7f6e\u7684\u5217\uff1a<\/span><\/p>\n
 library<\/span> (dplyr)\n<\/span><\/span>\n#select columns in position 1, 4, and 5\n<\/span>df %>%\n  select(1, 4, 5)\n\n  team rebound blocks\n1 to 30 14\n2 B 28 19\n3 C 24 22\n4 D 24 18\n5 E 28 15<\/strong><\/pre>\n
\u793a\u4f8b 2\uff1a\u9009\u62e9\u8303\u56f4\u5185\u7684\u5217<\/strong><\/span><\/h3>\n
\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u4e86\u5982\u4f55\u9009\u62e9\u8303\u56f4\u4e2d\u7684\u5217\uff1a<\/span><\/p>\n
 library<\/span> (dplyr)\n<\/span>\n#select columns in position 2 through 4\n<\/span>df %>%\n  select(2:4)\n\n  points assists rebounds\n1 99 33 30\n2 90 28 28\n3 86 31 24\n4 88 39 24\n5 95 34 28<\/strong><\/pre>\n
\u793a\u4f8b 3\uff1a\u6392\u9664\u7279\u5b9a\u5217<\/strong><\/h3>\n
\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u5982\u4f55\u6839\u636e\u7d22\u5f15\u4f4d\u7f6e\u6392\u9664\u7279\u5b9a\u5217\uff1a<\/span><\/p>\n
 library<\/span> (dplyr)\n<\/span>\n#select all columns except<\/em> those in position 1 and 2\n<\/span>df %>%\n  select(-c(1, 2))\n\n  assists rebound blocks\n1 33 30 14\n2 28 28 19\n3 31 24 22\n4 39 24 18\n5 34 28 15<\/strong><\/pre>\n
\u8bf7\u6ce8\u610f\uff0c\u7b2c\u4e00\u5217\u548c\u7b2c\u4e8c\u5217\u88ab\u6392\u9664\u3002<\/span><\/p>\n
\u5176\u4ed6\u8d44\u6e90<\/strong><\/span><\/h3>\n
\u4ee5\u4e0b\u6559\u7a0b\u89e3\u91ca\u4e86\u5982\u4f55\u5728 dplyr \u4e2d\u6267\u884c\u5176\u4ed6\u5e38\u7528\u529f\u80fd\uff1a<\/span><\/p>\n
\u5982\u4f55\u4f7f\u7528 dplyr \u6309\u540d\u79f0\u9009\u62e9\u5217<\/a>
\u5982\u4f55\u4f7f\u7528 dplyr \u8fc7\u6ee4\u5305\u542b\u7279\u5b9a\u5b57\u7b26\u4e32\u7684\u884c<\/a>
\u5982\u4f55\u4f7f\u7528 dplyr \u6309\u7ec4\u9009\u62e9\u7b2c\u4e00\u884c<\/a>
\u5982\u4f55\u5728 dplyr \u4e2d\u7528\u96f6\u66ff\u6362 NA<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
\u60a8\u53ef\u4ee5\u5728 dplyr \u4e2d\u4f7f\u7528\u4ee5\u4e0b\u57fa\u672c\u8bed\u6cd5\u6309\u7d22\u5f15\u4f4d\u7f6e\u9009\u62e9\u6570\u636e\u6846\u5217\uff1a #select columns in spe […]<\/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-2116","post","type-post","status-publish","format-standard","hentry","category-11"],"yoast_head":"\n\u5982\u4f55\u4f7f\u7528 dplyr \u6309\u7d22\u5f15\u9009\u62e9\u5217 - Statorials<\/title>\n<meta name=\"description\" content=\"\u672c\u6559\u7a0b\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528 R \u4e2d\u7684 dplyr \u5305\u901a\u8fc7\u7d22\u5f15\u9009\u62e9\u6570\u636e\u6846\u4e2d\u7684\u5217\uff0c\u5305\u62ec\u793a\u4f8b\u3002\" \/>\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\/cn\/dplyr-\u6309\u7d22\u5f15\u9009\u62e9\u5217\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5982\u4f55\u4f7f\u7528 dplyr \u6309\u7d22\u5f15\u9009\u62e9\u5217 - 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