{"id":1089,"date":"2023-07-27T17:13:55","date_gmt":"2023-07-27T17:13:55","guid":{"rendered":"https:\/\/statorials.org\/cn\/%e5%88%a0%e9%99%a4r%e4%b8%ad%e7%9a%84%e5%a4%9a%e5%88%97\/"},"modified":"2023-07-27T17:13:55","modified_gmt":"2023-07-27T17:13:55","slug":"%e5%88%a0%e9%99%a4r%e4%b8%ad%e7%9a%84%e5%a4%9a%e5%88%97","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/%e5%88%a0%e9%99%a4r%e4%b8%ad%e7%9a%84%e5%a4%9a%e5%88%97\/","title":{"rendered":"\u5982\u4f55\u5728 r \u4e2d\u5220\u9664\u591a\u5217\uff08\u9644\u793a\u4f8b\uff09"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u901a\u5e38\uff0c\u60a8\u53ef\u80fd\u5e0c\u671b\u4ece R \u7684\u6570\u636e\u6846\u4e2d\u4e00\u6b21\u5220\u9664\u591a\u5217\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df[, c('column_name1', 'column_name2')] &lt;- list(NULL)\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u4f8b\u5982\uff0c\u4ee5\u4e0b\u8bed\u6cd5\u663e\u793a\u5982\u4f55\u4ece\u7ed9\u5b9a\u6570\u636e\u6846\u4e2d\u5220\u9664\u7b2c 2 \u5217\u548c\u7b2c 3 \u5217\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame<\/span>\ndf &lt;- data.frame(var1=c(1, 3, 2, 9, 5),\n                 var2=c(7, 7, 8, 3, 2),\n                 var3=c(3, 3, 6, 6, 8),\n                 var4=c(1, 1, 2, 8, 7))\n\n<span style=\"color: #008080;\">#delete columns 2 and 3 from data frame\n<\/span>df[, c('var2', 'var3')] &lt;- list(NULL)\n\n<span style=\"color: #008080;\">#view data frame<\/span>\ndf\n\n  var1 var4\n1 1 1\n2 3 1\n3 2 2\n4 9 8\n5 5 7\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u60a8\u8fd8\u53ef\u4ee5\u6839\u636e\u7d22\u5f15\u5220\u9664\u5217\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame<\/span>\ndf &lt;- data.frame(var1=c(1, 3, 2, 9, 5),\n                 var2=c(7, 7, 8, 3, 2),\n                 var3=c(3, 3, 6, 6, 8),\n                 var4=c(1, 1, 2, 8, 7))\n\n<span style=\"color: #008080;\">#delete columns in position 2 and 3\n<\/span>df[, c(2, 3)] &lt;- list(NULL)\n\n<span style=\"color: #008080;\">#view data frame<\/span>\ndf\n\n  var1 var4\n1 1 1\n2 3 1\n3 2 2\n4 9 8\n5 5 7<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u4ece\u8303\u56f4\u4e2d\u5220\u9664\u6240\u6709\u5217\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame<\/span>\ndf &lt;- data.frame(var1=c(1, 3, 2, 9, 5),\n                 var2=c(7, 7, 8, 3, 2),\n                 var3=c(3, 3, 6, 6, 8),\n                 var4=c(1, 1, 2, 8, 7))\n\n<span style=\"color: #008080;\">#delete columns in range 1 through 3\n<\/span>df[, 1:3] &lt;- list(NULL)\n\n<span style=\"color: #008080;\">#view data frame<\/span>\ndf\n\n  var4\n1 1\n2 1\n3 2\n4 8\n5 7<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u4e00\u822c\u6765\u8bf4\uff0c\u5efa\u8bae\u6309\u540d\u79f0\u800c\u4e0d\u662f\u6309\u4f4d\u7f6e\u5220\u9664\u5217\uff0c\u56e0\u4e3a\u5982\u679c\u6dfb\u52a0\u6216\u91cd\u65b0\u6392\u5217\u5217\uff0c\u4f4d\u7f6e\u53ef\u80fd\u4f1a\u53d1\u751f\u53d8\u5316\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u901a\u8fc7\u4f7f\u7528\u5217\u540d\u79f0\uff0c\u60a8\u53ef\u4ee5\u786e\u4fdd\u5220\u9664\u6b63\u786e\u7684\u5217\uff0c\u65e0\u8bba\u5176\u4f4d\u7f6e\u5982\u4f55\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u5176\u4ed6\u8d44\u6e90<\/strong><\/span><\/h3>\n<p><a href=\"https:\/\/statorials.org\/cn\/r-\u5faa\u73af\u6570\u636e\u6846\u5217\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u5982\u4f55\u5728 R \u4e2d\u8fed\u4ee3\u5217\u540d<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/r-\u5c06\u4e24\u5217\u5408\u5e76\u4e3a\u4e00\u5217\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u5982\u4f55\u5728R\u4e2d\u5c06\u4e24\u5217\u5408\u5e76\u4e3a\u4e00\u5217<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/\u4ece-r-\u4e2d\u7684\u591a\u5217\u4e2d\u5220\u9664\u5f02\u5e38\u503c\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u5982\u4f55\u4ece R \u4e2d\u7684\u591a\u5217\u4e2d\u5220\u9664\u5f02\u5e38\u503c<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u901a\u5e38\uff0c\u60a8\u53ef\u80fd\u5e0c\u671b\u4ece R \u7684\u6570\u636e\u6846\u4e2d\u4e00\u6b21\u5220\u9664\u591a\u5217\u3002 \u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a df[, c(&#8216;column_ [&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":[],"class_list":["post-1089","post","type-post","status-publish","format-standard","hentry","category-11"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5982\u4f55\u5728 R \u4e2d\u5220\u9664\u591a\u5217\uff08\u9644\u793a\u4f8b\uff09-Statorials<\/title>\n<meta name=\"description\" content=\"\u672c\u6559\u7a0b\u5c55\u793a\u4e86\u5728 R \u4e2d\u4e00\u6b21\u5220\u9664\u6216\u5220\u9664\u591a\u4e2a\u5217\u7684\u51e0\u79cd\u65b9\u6cd5\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\/\u5220\u9664r\u4e2d\u7684\u591a\u5217\/\" \/>\n<meta property=\"og:locale\" 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