{"id":1384,"date":"2023-07-26T14:55:47","date_gmt":"2023-07-26T14:55:47","guid":{"rendered":"https:\/\/statorials.org\/cn\/ifelse-%e5%9c%a8-r-%e5%b5%8c%e5%a5%97%e4%b8%ad\/"},"modified":"2023-07-26T14:55:47","modified_gmt":"2023-07-26T14:55:47","slug":"ifelse-%e5%9c%a8-r-%e5%b5%8c%e5%a5%97%e4%b8%ad","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/ifelse-%e5%9c%a8-r-%e5%b5%8c%e5%a5%97%e4%b8%ad\/","title":{"rendered":"\u5982\u4f55\u5728 r \u4e2d\u7f16\u5199\u5d4c\u5957\u7684 if else \u8bed\u53e5\uff08\u9644\u793a\u4f8b\uff09"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u57fa\u7840 R \u4e2d\u7684<a href=\"https:\/\/www.rdocumentation.org\/packages\/base\/versions\/3.6.2\/topics\/ifelse\" target=\"_blank\" rel=\"noopener\">ifelse()<\/a>\u51fd\u6570\u53ef\u7528\u4e8e\u7f16\u5199\u5feb\u901f\u7684 if-else \u8bed\u53e5\u3002\u8be5\u51fd\u6570\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>ifelse\uff08\u6d4b\u8bd5\uff0c\u662f\uff0c\u5426\uff09<\/strong><\/span><\/p>\n<p><span style=\"color: #000000;\">\u91d1\u5b50\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\"><strong>\u6d4b\u8bd5\uff1a<\/strong>\u903b\u8f91\u6d4b\u8bd5<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>yes\uff1a<\/strong>\u903b\u8f91\u6d4b\u8bd5\u4e3a True \u65f6\u8fd4\u56de\u7684\u503c<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>no\uff1a<\/strong>\u903b\u8f91\u6d4b\u8bd5\u4e3a False \u65f6\u8fd4\u56de\u7684\u503c<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u672c\u6559\u7a0b\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528\u6b64\u51fd\u6570\u5728 R \u4e2d\u7f16\u5199 if else \u8bed\u53e5\u4ee5\u53ca\u5d4c\u5957 if else \u8bed\u53e5\uff0c\u4f7f\u7528\u4ee5\u4e0b\u6570\u636e\u6846\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(team = c('A', 'A', 'B', 'B', 'B', 'C', 'D'),\n                 points = c(4, 7, 8, 8, 8, 9, 12),\n                 rebounds = c(3, 3, 4, 4, 6, 7, 7))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  team points rebounds\n1 to 4 3\n2 to 7 3\n3 B 8 4\n4 B 8 4\n5 B 8 6\n6 C 9 7\n7 D 12 7<\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u793a\u4f8b 1\uff1a\u5982\u4f55\u7f16\u5199\u57fa\u672c\u7684 If else \u8bed\u53e5<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u5982\u4f55\u5728\u6570\u636e\u6846\u4e2d\u521b\u5efa\u4e00\u4e2a\u65b0\u5217\uff0c\u5176\u503c\u57fa\u4e8e\u201cteam\u201d\u5217\u7684\u503c\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create new column in data frame\n<\/span>df$rating &lt;- <span style=\"color: #3366ff;\">ifelse<\/span> (df$team <span style=\"color: #993300;\">==<\/span> ' <span style=\"color: #008000;\">A<\/span> ', ' <span style=\"color: #008000;\">great<\/span> ', ' <span style=\"color: #008000;\">bad<\/span> ')\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  team points rebounds rating\n1 A 4 3 great\n2 A 7 3 great\n3 B 8 4 bad\n4 B 8 4 bad\n5 B 8 6 bad\n6 C 9 7 bad\n7 D 12 7 bad\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u8fd9\u4e2a\u7b80\u5355\u7684 ifelse \u8bed\u53e5\u544a\u8bc9 R \u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">\u5982\u679c\u7403\u961f\u680f\u4e2d\u7684\u503c\u4e3a\u201cA\u201d\uff0c\u5219\u7ed9\u4e88\u8be5\u7403\u5458\u201c\u4f18\u79c0\u201d\u8bc4\u7ea7\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u5426\u5219\uff0c\u5c31\u9519\u8fc7\u4e86\u201c\u53ef\u601c\u201d\u7684\u7403\u5458\u3002<\/span><\/li>\n<\/ul>\n<h3><span style=\"color: #000000;\"><strong>\u793a\u4f8b 2\uff1a\u5982\u4f55\u7f16\u5199\u5d4c\u5957\u7684 If Else \u8bed\u53e5<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u5982\u4f55\u901a\u8fc7\u7f16\u5199\u5d4c\u5957\u7684 if else \u8bed\u53e5\u5728\u6570\u636e\u6846\u4e2d\u521b\u5efa\u65b0\u5217\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create new column in data frame\n<\/span>df$rating &lt;- <span style=\"color: #3366ff;\">ifelse<\/span> (df$team <span style=\"color: #993300;\">==<\/span> ' <span style=\"color: #008000;\">A<\/span> ', ' <span style=\"color: #008000;\">great<\/span> ',\n               <span style=\"color: #3366ff;\">ifelse<\/span> (df$team <span style=\"color: #993300;\">==<\/span> ' <span style=\"color: #008000;\">B<\/span> ', ' <span style=\"color: #008000;\">OK<\/span> ', ' <span style=\"color: #008000;\">bad<\/span> '))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  team points rebounds rating\n1 A 4 3 great\n2 A 7 3 great\n3 B 8 4 OK\n4 B 8 4 OK\n5 B 8 6 OK\n6 C 9 7 bad\n7 D 12 7 bad\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u8fd9\u4e2a\u5d4c\u5957\u7684 ifelse \u8bed\u53e5\u544a\u8bc9 R \u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">\u5982\u679c\u7403\u961f\u680f\u4e2d\u7684\u503c\u4e3a\u201cA\u201d\uff0c\u5219\u7ed9\u4e88\u8be5\u7403\u5458\u201c\u4f18\u79c0\u201d\u8bc4\u7ea7\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u5426\u5219\uff0c\u5982\u679c\u7403\u961f\u5217\u4e2d\u7684\u503c\u4e3a\u201cB\u201d\uff0c\u5219\u4e3a\u8be5\u7403\u5458\u8bc4\u5206\u4e3a\u201cOK\u201d\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u5426\u5219\uff0c\u5c31\u9519\u8fc7\u4e86\u201c\u53ef\u601c\u201d\u7684\u7403\u5458\u3002<\/span><\/li>\n<\/ul>\n<h3><span style=\"color: #000000;\"><strong>\u793a\u4f8b 3\uff1a\u5982\u4f55\u7f16\u5199\u66f4\u957f\u7684\u5d4c\u5957 If else \u8bed\u53e5<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u6f14\u793a\u4e86\u5982\u4f55\u901a\u8fc7\u7f16\u5199\u66f4\u957f\u7684\u5d4c\u5957 if else \u8bed\u53e5\u5728\u6570\u636e\u6846\u4e2d\u521b\u5efa\u65b0\u5217\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create new column in data frame\n<\/span>df$rating &lt;- <span style=\"color: #3366ff;\">ifelse<\/span> (df$team <span style=\"color: #993300;\">==<\/span> ' <span style=\"color: #008000;\">A<\/span> ', ' <span style=\"color: #008000;\">great<\/span> ',\n               <span style=\"color: #3366ff;\">ifelse<\/span> (df$team <span style=\"color: #993300;\">==<\/span> ' <span style=\"color: #008000;\">B<\/span> ', ' <span style=\"color: #008000;\">OK<\/span> ',\n                 <span style=\"color: #3366ff;\">ifelse<\/span> (df$team <span style=\"color: #993300;\">==<\/span> ' <span style=\"color: #008000;\">C<\/span> ', ' <span style=\"color: #008000;\">decent<\/span> ', ' <span style=\"color: #008000;\">bad<\/span> ')))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  team points rebounds rating\n1 A 4 3 great\n2 A 7 3 great\n3 B 8 4 OK\n4 B 8 4 OK\n5 B 8 6 OK\n6 C 9 7 decent\n7 D 12 7 bad\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u8fd9\u4e2a\u5d4c\u5957\u7684 ifelse \u8bed\u53e5\u544a\u8bc9 R \u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">\u5982\u679c\u7403\u961f\u680f\u4e2d\u7684\u503c\u4e3a\u201cA\u201d\uff0c\u5219\u7ed9\u4e88\u8be5\u7403\u5458\u201c\u4f18\u79c0\u201d\u8bc4\u7ea7\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u5426\u5219\uff0c\u5982\u679c\u7403\u961f\u5217\u4e2d\u7684\u503c\u4e3a\u201cB\u201d\uff0c\u5219\u4e3a\u8be5\u7403\u5458\u8bc4\u5206\u4e3a\u201cOK\u201d\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u5426\u5219\uff0c\u5982\u679c\u7403\u961f\u680f\u4e2d\u7684\u503c\u4e3a\u201cC\u201d\uff0c\u5219\u7ed9\u4e88\u8be5\u7403\u5458\u201c\u4f53\u9762\u201d\u8bc4\u7ea7\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u5426\u5219\uff0c\u5c31\u9519\u8fc7\u4e86\u201c\u53ef\u601c\u201d\u7684\u7403\u5458\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u8bf7\u6ce8\u610f\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u6b64\u7cbe\u786e\u6a21\u5f0f\u6765\u7f16\u5199\u5d4c\u5957\u7684 ifelse \u8bed\u53e5\uff0c\u53ea\u8981\u60a8\u613f\u610f\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u60a8\u53ef\u4ee5<a href=\"https:\/\/statorials.org\/cn\/\u7edf\u8ba1\u5b66\u4ee5\u7b80\u5355\u76f4\u63a5\u7684\u65b9\u5f0f\u89e3\u91ca\u6982\u5ff5\uff0c\u6211\u4eec\u4f7f\u5b66\u4e60\u7edf\u8ba1\u53d8\u5f97\u66f4\u5bb9\u6613\/\" target=\"_blank\" rel=\"noopener\">\u5728\u6b64\u5904<\/a>\u627e\u5230\u66f4\u591a R \u6559\u7a0b\u3002<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u57fa\u7840 R \u4e2d\u7684ifelse()\u51fd\u6570\u53ef\u7528\u4e8e\u7f16\u5199\u5feb\u901f\u7684 if-else \u8bed\u53e5\u3002\u8be5\u51fd\u6570\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a ifelse\uff08 [&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-1384","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\u7f16\u5199\u5d4c\u5957\u7684 If Else \u8bed\u53e5\uff08\u9644\u793a\u4f8b\uff09<\/title>\n<meta name=\"description\" content=\"\u672c\u6559\u7a0b\u901a\u8fc7\u51e0\u4e2a\u793a\u4f8b\u89e3\u91ca\u4e86\u5982\u4f55\u5728 R 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