{"id":1102,"date":"2023-07-27T16:12:17","date_gmt":"2023-07-27T16:12:17","guid":{"rendered":"https:\/\/statorials.org\/cn\/r-%e4%b8%ad%e7%9a%84%e7%b4%af%e7%a7%af%e5%92%8c\/"},"modified":"2023-07-27T16:12:17","modified_gmt":"2023-07-27T16:12:17","slug":"r-%e4%b8%ad%e7%9a%84%e7%b4%af%e7%a7%af%e5%92%8c","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/r-%e4%b8%ad%e7%9a%84%e7%b4%af%e7%a7%af%e5%92%8c\/","title":{"rendered":"\u5982\u4f55\u8ba1\u7b97 r \u4e2d\u7684\u7d2f\u79ef\u548c\uff08\u9644\u793a\u4f8b\uff09"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><span style=\"color: #000000;\">\u60a8\u53ef\u4ee5\u4f7f\u7528 R \u57fa<strong>cumsum()<\/strong>\u51fd\u6570\u8f7b\u677e\u8ba1\u7b97\u6570\u503c\u5411\u91cf\u7684\u7d2f\u79ef\u548c\u3002<\/span><\/span><\/p>\n<p><span style=\"color: #000000;\">\u672c\u6559\u7a0b\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528\u6b64\u51fd\u6570\u8ba1\u7b97\u5411\u91cf\u7684\u7d2f\u79ef\u548c\u4ee5\u53ca\u5982\u4f55\u53ef\u89c6\u5316\u7d2f\u79ef\u548c\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u5982\u4f55\u8ba1\u7b97R\u4e2d\u7684\u7d2f\u79ef\u548c<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u5982\u4f55\u8ba1\u7b97\u7ed9\u5b9a\u516c\u53f8 15 \u4e2a\u9500\u552e\u5b63\u5ea6\u7684\u7d2f\u8ba1\u9500\u552e\u989d\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create dataset<\/span>\ndata &lt;- data.frame(quarter=1:15,\n                   sales=c(1, 2, 2, 5, 4, 7, 5, 7, 6, 8, 5, 9, 11, 12, 4))\n\n<span style=\"color: #008080;\">#create new column in dataset that contains cumulative sales<\/span>\ndata$cum_sales &lt;- <span style=\"color: #3366ff;\">cumsum<\/span> (data$sales)\n\n<span style=\"color: #008080;\">#view dataset<\/span>\ndata\n\n   quarter sales cum_sales\n1 1 1 1\n2 2 2 3\n3 3 2 5\n4 4 5 10\n5 5 4 14\n6 6 7 21\n7 7 5 26\n8 8 7 33\n9 9 6 39\n10 10 8 47\n11 11 5 52\n12 12 9 61\n13 13 11 72\n14 14 12 84\n15 15 4 88\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>cum_sales<\/strong>\u5217\u4e2d\u663e\u793a\u7684\u503c\u8868\u793a\u622a\u81f3\u8be5\u5b63\u5ea6\uff08\u5305\u62ec\u8be5\u5b63\u5ea6\uff09\u7684\u603b\u9500\u552e\u989d\u3002\u4f8b\u5982\uff0c\u7b2c 5 \u5b63\u5ea6\u7684\u7d2f\u8ba1\u9500\u552e\u989d\u8ba1\u7b97\u5982\u4e0b\uff1a 1+2+2+5+4 = <strong>14<\/strong> \u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u5982\u4f55\u5728 R \u4e2d\u53ef\u89c6\u5316\u8fd0\u884c\u603b\u548c<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u8ba1\u7b97\u51fa\u7d2f\u8ba1\u9500\u552e\u989d\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u7b80\u5355\u7684\u57fa\u4e8e R \u7684\u6298\u7ebf\u56fe\u6765\u53ef\u89c6\u5316\u6309\u5b63\u5ea6\u7684\u7d2f\u8ba1\u9500\u552e\u989d\uff1a<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>plot(data$cum_sales, type=' <span style=\"color: #008000;\">l<\/span> ', xlab=' <span style=\"color: #008000;\">Quarter<\/span> ', ylab=' <span style=\"color: #008000;\">Cumulative Sales<\/span> ')\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11220 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/cumsum1.png\" alt=\"R\u4e2d\u7d2f\u79ef\u548c\u7684\u6298\u7ebf\u56fe\" width=\"460\" height=\"427\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p><span style=\"color: #000000;\">\u6216\u8005\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 R \u53ef\u89c6\u5316\u5e93<a href=\"https:\/\/ggplot2.tidyverse.org\/\" target=\"_blank\" rel=\"noopener noreferrer\">ggplot2<\/a>\u521b\u5efa\u76f8\u540c\u7684\u7ebf\u56fe\uff1a<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #993300;\">library<\/span> (ggplot2)\n\nggplot(data, aes(x=quarter, y=cum_sales)) +\n  geom_line() +\n  labs(x=' <span style=\"color: #008000;\">Quarter<\/span> ', y=' <span style=\"color: #008000;\">Cumulative Sales<\/span> ')<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11221 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/cumsum2.png\" alt=\"ggplot2 \u4e2d\u7684\u7d2f\u79ef\u548c\u56fe\" width=\"464\" height=\"457\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u5176\u4ed6\u8d44\u6e90<\/strong><\/span><\/h3>\n<p><a href=\"https:\/\/statorials.org\/cn\/r-\u4e2d\u5404\u5217\u7684\u5e73\u5747\u503c\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u5982\u4f55\u5728 R \u4e2d\u5bf9\u5217\u8fdb\u884c\u5e73\u5747<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/\u5728-r-\u4e2d\u6dfb\u52a0\u7279\u5b9a\u5217\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u5982\u4f55\u5bf9 R \u4e2d\u7684\u7279\u5b9a\u5217\u6c42\u548c<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/\u8ba1\u6570\u5982\u679c-r\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u5982\u4f55\u5728 R \u4e2d\u8fd0\u884c COUNTIF \u51fd\u6570<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u60a8\u53ef\u4ee5\u4f7f\u7528 R \u57facumsum()\u51fd\u6570\u8f7b\u677e\u8ba1\u7b97\u6570\u503c\u5411\u91cf\u7684\u7d2f\u79ef\u548c\u3002 \u672c\u6559\u7a0b\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528\u6b64\u51fd\u6570\u8ba1\u7b97\u5411\u91cf\u7684\u7d2f\u79ef\u548c\u4ee5\u53ca [&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-1102","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\u8ba1\u7b97\u7d2f\u79ef\u548c\uff08\u9644\u793a\u4f8b\uff09 \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"\u672c\u6559\u7a0b\u901a\u8fc7\u51e0\u4e2a\u793a\u4f8b\u89e3\u91ca\u4e86\u5982\u4f55\u5728 R \u4e2d\u8ba1\u7b97\u7d2f\u79ef\u548c\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-\u4e2d\u7684\u7d2f\u79ef\u548c\/\" \/>\n<meta property=\"og:locale\" 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