{"id":3059,"date":"2023-07-19T10:15:25","date_gmt":"2023-07-19T10:15:25","guid":{"rendered":"https:\/\/statorials.org\/cn\/r-%e6%8c%89%e8%a1%8c%e5%90%8d%e7%a7%b0%e5%90%88%e5%b9%b6\/"},"modified":"2023-07-19T10:15:25","modified_gmt":"2023-07-19T10:15:25","slug":"r-%e6%8c%89%e8%a1%8c%e5%90%8d%e7%a7%b0%e5%90%88%e5%b9%b6","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/r-%e6%8c%89%e8%a1%8c%e5%90%8d%e7%a7%b0%e5%90%88%e5%b9%b6\/","title":{"rendered":"\u5982\u4f55\u5728 r \u4e2d\u6309\u884c\u540d\u79f0\u5408\u5e76\u6570\u636e\u6846"},"content":{"rendered":"

<\/p>\n

\n

\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u57fa\u672c\u8bed\u6cd5\u6839\u636e\u884c\u540d\u79f0\u5408\u5e76 R \u4e2d\u7684\u4e24\u4e2a\u6570\u636e\u6846\uff1a<\/span><\/p>\n

 #inner join<\/span>\nmerge(df1, df2, by= 0<\/span> )\n\n#left join<\/span>\nmerge(df1, df2, by= 0<\/span> , all. x<\/span> = TRUE<\/span> )\n\n#outerjoin<\/span>\nmerge(df1, df2, by= 0<\/span> , all= TRUE<\/span> )\n<\/strong><\/pre>\n
\u4f7f\u7528by=0<\/strong>\u53c2\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u544a\u8bc9 R \u6211\u4eec\u8981\u4f7f\u7528\u6570\u636e\u5757\u7684\u884c\u540d\u79f0\u8fdb\u884c\u5408\u5e76\u3002<\/span><\/p>\n
\u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u5c06\u6bcf\u79cd\u65b9\u6cd5\u4e0e\u4ee5\u4e0b\u4e24\u4e2a\u6570\u636e\u6846\u4e00\u8d77\u4f7f\u7528\uff1a<\/span><\/p>\n
 #create first data frame\ndf1 <- data. frame<\/span> (points=c(99, 90, 86, 88, 95),\n                  assists=c(33, 28, 31, 39, 34))\n\nrownames(df1) <- c(1, 2, 3, 4, 5)\n\ndf1\n\n  assist points\n1 99 33\n2 90 28\n3 86 31\n4 88 39\n5 95 34<\/span>\n\n#create second data frame\ndf2 <- data. frame<\/span> (rebounds=c(17, 15, 22, 26, 25),\n                  blocks=c(7, 7, 15, 12, 14))\n\nrownames(df2) <- c(3, 4, 5, 6, 7)\n\ndf2\n\n  rebound blocks\n3 17 7\n4 15 7\n5 22 15\n6 26 12\n7 25 14\n<\/span><\/span><\/strong><\/pre>\n
\u793a\u4f8b 1\uff1a\u4f7f\u7528\u884c\u540d\u79f0\u6267\u884c\u5185\u8fde\u63a5<\/strong><\/span><\/h3>\n
\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u5982\u4f55\u4f7f\u7528\u884c\u540d\u79f0\u5bf9\u4e24\u4e2a\u6570\u636e\u6846\u6267\u884c\u5185\u90e8\u8054\u63a5\uff1a<\/span><\/p>\n
 #perform inner join using row names<\/span>\nmerge(df1, df2, by= 0<\/span> )\n\n  Row.names points assists rebounds blocks\n1 3 86 31 17 7\n2 4 88 39 15 7\n3 5 95 34 22 15\n<\/strong><\/span><\/pre>\n
\u8bf7\u6ce8\u610f\uff0c\u53ea\u6709\u884c\u540d\u79f0\u5c5e\u4e8e\u4e24\u4e2a\u6570\u636e\u6846\u7684\u884c\u624d\u4f1a\u4fdd\u7559\u5728\u6700\u7ec8\u5408\u5e76\u7684\u6570\u636e\u6846\u4e2d\u3002<\/span><\/p>\n
\u793a\u4f8b 2\uff1a\u4f7f\u7528\u884c\u540d\u79f0\u6267\u884c\u5de6\u8fde\u63a5<\/strong><\/span><\/h3>\n
\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u5982\u4f55\u4f7f\u7528\u884c\u540d\u79f0\u5bf9\u4e24\u4e2a\u6570\u636e\u6846\u6267\u884c\u5de6\u8fde\u63a5\uff1a<\/span><\/p>\n
 #perform left join using row names<\/span>\nmerge(df1, df2, by= 0<\/span> , all. x<\/span> = TRUE<\/span> )\n\n  Row.names points assists rebounds blocks\n1 1 99 33 NA NA\n2 2 90 28 NA NA\n3 3 86 31 17 7\n4 4 88 39 15 7\n5 5 95 34 22 15\n<\/strong><\/span><\/pre>\n
\u8bf7\u6ce8\u610f\uff0c\u7b2c\u4e00\u4e2a\u6570\u636e\u5e27\u4e2d\u7684\u6240\u6709\u884c\u90fd\u4fdd\u7559\u5728\u6700\u7ec8\u5408\u5e76\u7684\u6570\u636e\u5e27\u4e2d\u3002<\/span><\/p>\n
\u793a\u4f8b 3\uff1a\u4f7f\u7528\u884c\u540d\u79f0\u6267\u884c\u5916\u8fde\u63a5<\/strong><\/span><\/h3>\n
\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u5982\u4f55\u4f7f\u7528\u884c\u540d\u79f0\u5bf9\u4e24\u4e2a\u6570\u636e\u6846\u6267\u884c\u5916\u8fde\u63a5\uff1a<\/span><\/p>\n
 #perform outer join using row names<\/span>\nmerge(df1, df2, by= 0<\/span> , all= TRUE<\/span> )\n\n  Row.names points assists rebounds blocks\n1 1 99 33 NA NA\n2 2 90 28 NA NA\n3 3 86 31 17 7\n4 4 88 39 15 7\n5 5 95 34 22 15\n6 6 NA NA 26 12\n7 7 NA NA 25 14\n<\/strong><\/span><\/pre>\n
\u8bf7\u6ce8\u610f\uff0c\u4e24\u4e2a\u6570\u636e\u6846\u4e2d\u7684\u6240\u6709\u884c\u90fd\u4fdd\u7559\u5728\u6700\u7ec8\u5408\u5e76\u7684\u6570\u636e\u6846\u4e2d\u3002<\/span><\/p>\n
\u5176\u4ed6\u8d44\u6e90<\/strong><\/span><\/h3>\n
\u4ee5\u4e0b\u6559\u7a0b\u89e3\u91ca\u4e86\u5982\u4f55\u5728 R \u4e2d\u6267\u884c\u5176\u4ed6\u5e38\u89c1\u6570\u636e\u6846\u51fd\u6570\uff1a<\/span><\/p>\n
\u5982\u4f55\u5728 R \u4e2d\u8fdb\u884c\u5de6\u8fde\u63a5<\/a>
\u5982\u4f55\u5728 R \u4e2d\u8fdb\u884c VLOOKUP<\/a>
\u5982\u4f55\u5728R\u4e2d\u5411\u6570\u636e\u6846\u6dfb\u52a0\u884c<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u57fa\u672c\u8bed\u6cd5\u6839\u636e\u884c\u540d\u79f0\u5408\u5e76 R \u4e2d\u7684\u4e24\u4e2a\u6570\u636e\u6846\uff1a #inner join merge(df1, df […]<\/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-3059","post","type-post","status-publish","format-standard","hentry","category-11"],"yoast_head":"\n\u5982\u4f55\u5728 R \u4e2d\u6309\u884c\u540d\u79f0\u5408\u5e76\u6570\u636e\u6846 - Statorials<\/title>\n<meta name=\"description\" content=\"\u672c\u6559\u7a0b\u901a\u8fc7\u51e0\u4e2a\u793a\u4f8b\u89e3\u91ca\u4e86\u5982\u4f55\u5728 R \u4e2d\u6309\u884c\u540d\u79f0\u5408\u5e76\u6570\u636e\u6846\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\/r-\u6309\u884c\u540d\u79f0\u5408\u5e76\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5982\u4f55\u5728 R \u4e2d\u6309\u884c\u540d\u79f0\u5408\u5e76\u6570\u636e\u6846 - 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