{"id":180573,"date":"2024-05-08T20:38:09","date_gmt":"2024-05-08T12:38:09","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/180573.html"},"modified":"2024-05-08T20:38:19","modified_gmt":"2024-05-08T12:38:19","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8r%e8%af%ad%e8%a8%80%e5%b0%86%e6%95%b0%e6%8d%ae%e6%a1%86%e5%86%85%e5%90%8d%e5%ad%97%e7%9b%b8%e5%90%8c%e7%9a%84%e4%ba%ba%e7%9a%84%e6%95%b0%e6%8d%ae%e8%bf%9b%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/180573.html","title":{"rendered":"\u5982\u4f55\u4f7f\u7528r\u8bed\u8a00\u5c06\u6570\u636e\u6846\u5185\u540d\u5b57\u76f8\u540c\u7684\u4eba\u7684\u6570\u636e\u8fdb\u884c\u76f8\u52a0\u5462"},"content":{"rendered":"

\"\u5982\u4f55\u4f7f\u7528r\u8bed\u8a00\u5c06\u6570\u636e\u6846\u5185\u540d\u5b57\u76f8\u540c\u7684\u4eba\u7684\u6570\u636e\u8fdb\u884c\u76f8\u52a0\u5462\"<\/p>\n

\u5728\u5904\u7406\u6570\u636e\u6846\uff08DataFrame\uff09\u65f6\uff0c\u4f7f\u7528R\u8bed\u8a00\u5c06\u540d\u5b57\u76f8\u540c\u7684\u4eba\u7684\u6570\u636e\u8fdb\u884c\u76f8\u52a0\u662f\u4e00\u79cd\u5e38\u89c1\u9700\u6c42\uff0c\u8fd9\u4e3b\u8981\u5305\u62ec\u4e24\u6b65\uff1a\u6c47\u603b\u76f8\u540c\u540d\u5b57\u7684\u8bb0\u5f55<\/strong> \u548c \u6267\u884c\u76f8\u5e94\u7684\u6c42\u548c\u64cd\u4f5c<\/strong>\u3002\u8fd9\u53ef\u4ee5\u501f\u52a9\u4e8edplyr\u5305\u6216\u8005data.table\u5305\u6765\u5b9e\u73b0\u3002\u5176\u4e2d\uff0cdplyr\u5305\u63d0\u4f9b\u4e86\u4e00\u79cd\u8f83\u4e3a\u7b80\u6d01\u6613\u61c2\u7684\u8bed\u6cd5<\/strong>\uff0c\u800cdata.table\u5219\u5728\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u65f6\u6027\u80fd\u66f4\u4f73\u3002<\/p>\n<\/p>\n

\u4ee5dplyr\u5305\u4e3a\u4f8b\uff0c\u5176\u6838\u5fc3\u51fd\u6570\u5305\u62ecgroup_by()\u548csummarise()\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u6570\u636e\u7684\u5206\u7ec4\u4ee5\u53ca\u5206\u7ec4\u540e\u7684\u6c42\u548c\u64cd\u4f5c\u3002\u5176\u4e2d\uff0cgroup_by()\u51fd\u6570\u7528\u4e8e\u6309\u4e00\u4e2a\u6216\u591a\u4e2a\u53d8\u91cf\u5206\u7ec4<\/strong>\uff0c\u800csummarise()\u51fd\u6570\u5219\u7528\u4e8e\u5bf9\u6bcf\u4e2a\u5206\u7ec4\u6267\u884c\u6c42\u548c\u64cd\u4f5c\uff0c\u4ece\u800c\u5c06\u540d\u5b57\u76f8\u540c\u7684\u4eba\u7684\u6570\u636e\u8fdb\u884c\u76f8\u52a0\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u5b89\u88c5\u4e0e\u52a0\u8f7d\u5fc5\u9700\u7684\u5305<\/h3>\n<\/p>\n

\u5728\u5f00\u59cb\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u786e\u4fdd\u5df2\u5b89\u88c5\u5e76\u52a0\u8f7d\u4e86dplyr\u5305\u3002<\/p>\n<\/p>\n

if (!requireNamespace("dplyr", quietly = TRUE)) install.packages("dplyr")<\/p>\n
library(dplyr)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e8c\u3001\u521b\u5efa\u793a\u4f8b\u6570\u636e\u6846<\/h3>\n<\/p>\n
\u9996\u5148\uff0c\u6211\u4eec\u5c06\u521b\u5efa\u4e00\u4e2a\u793a\u4f8b\u6570\u636e\u6846\uff0c\u7528\u4e8e\u6f14\u793a\u5982\u4f55\u6267\u884c\u6c42\u548c\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
# \u521b\u5efa\u793a\u4f8b\u6570\u636e\u6846<\/p>\n
people_data <- data.frame(<\/p>\n
  Name = c("John", "Sarah", "John", "Sarah", "Mike"),<\/p>\n
  Score = c(20, 25, 30, 35, 40)<\/p>\n
)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528dplyr\u5305\u8fdb\u884c\u5206\u7ec4\u6c42\u548c<\/h3>\n<\/p>\n
\u73b0\u5728\u4f7f\u7528dplyr\u5305\u4e2d\u7684group_by()\u548csummarise()\u51fd\u6570\uff0c\u5bf9\u540d\u5b57\u76f8\u540c\u7684\u4eba\u7684\u5206\u6570\u8fdb\u884c\u76f8\u52a0\u3002<\/p>\n<\/p>\n
# \u4f7f\u7528dplyr\u8fdb\u884c\u5206\u7ec4\u6c42\u548c<\/p>\n
summarized_data <- people_data %>%<\/p>\n
  group_by(Name) %>%<\/p>\n
  summarise(TotalScore = sum(Score))<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u5bf9people_data<\/code>\u6570\u636e\u6846\u6309\u7167Name<\/code>\u5217\u8fdb\u884c\u5206\u7ec4\uff0c\u7136\u540e\u4f7f\u7528summarise()\u51fd\u6570\u8ba1\u7b97\u6bcf\u4e2a\u5206\u7ec4\u4e2dScore<\/code>\u5217\u7684\u603b\u548c\uff0c\u7ed3\u679c\u4f1a\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u6570\u636e\u6846summarized_data<\/code>\uff0c\u5176\u4e2d\u5305\u542b\u6bcf\u4e2a\u552f\u4e00\u59d3\u540d\u53ca\u5176\u5bf9\u5e94\u5206\u6570\u7684\u603b\u548c\u3002<\/p>\n<\/p>\n
\u56db\u3001\u6570\u636e\u5904\u7406\u7684\u5176\u4ed6\u8003\u8651<\/h3>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6839\u636e\u6570\u636e\u7684\u4e0d\u540c\u7279\u6027\u548c\u9700\u6c42\uff0c\u53ef\u80fd\u8fd8\u9700\u8981\u8fdb\u884c\u4e00\u4e9b\u989d\u5916\u7684\u5904\u7406\u6b65\u9aa4\uff0c\u6bd4\u5982\u6570\u636e\u6e05\u6d17\u3001\u5f02\u5e38\u503c\u5904\u7406\u6216\u8005\u662f\u6570\u636e\u8f6c\u578b\u7b49\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff0c\u5728\u6267\u884c\u5206\u7ec4\u6c42\u548c\u64cd\u4f5c\u4e4b\u524d\uff0c\u53ef\u80fd\u9700\u8981\u68c0\u67e5Name<\/code>\u5217\u4e2d\u662f\u5426\u5b58\u5728\u7a7a\u503c\u6216\u975e\u6807\u51c6\u5316\u7684\u547d\u540d\uff0c\u8fd9\u4e9b\u90fd\u53ef\u80fd\u5f71\u54cd\u6700\u7ec8\u7684\u6c42\u548c\u7ed3\u679c\u3002\u5bf9\u6b64\u53ef\u4ee5\u91c7\u7528dplyr\u5305\u4e2d\u7684mutate()\u548cifelse()\u51fd\u6570\u6765\u8fdb\u884c\u6570\u636e\u9884\u5904\u7406\u3002<\/p>\n<\/p>\n
# \u6570\u636e\u9884\u5904\u7406\u793a\u4f8b<\/p>\n
clean_data <- people_data %>%<\/p>\n
  mutate(Name = ifelse(is.na(Name), "Unknown", Name))<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5bf9people_data<\/code>\u8fdb\u884c\u4e86\u9884\u5904\u7406\uff0c\u786e\u4fdd\u4e86\u6240\u6709\u7684Name<\/code>\u90fd\u662f\u6709\u6548\u4e14\u6807\u51c6\u5316\u7684\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u8fdb\u9636\u5206\u6790<\/h3>\n<\/p>\n
\u5bf9\u4e8e\u8fdb\u9636\u7684\u6570\u636e\u5206\u6790\uff0c\u53ef\u80fd\u4f1a\u6d89\u53ca\u5230\u66f4\u52a0\u590d\u6742\u7684\u5206\u7ec4\u7edf\u8ba1\u64cd\u4f5c\uff0c\u6bd4\u5982\u5206\u7ec4\u540e\u7684\u5747\u503c\u3001\u4e2d\u4f4d\u6570\u8ba1\u7b97\u6216\u8005\u662f\u57fa\u4e8e\u5206\u7ec4\u7684\u591a\u6761\u4ef6\u7b5b\u9009\u7b49\u3002dplyr\u5305\u4e3a\u8fd9\u4e9b\u9700\u6c42\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u51fd\u6570\u652f\u6301\u5982filter()<\/code>\u3001arrange()<\/code>\u4ee5\u53camutate()<\/code>\u7b49\u3002<\/p>\n<\/p>\n
\u6b64\u5916\uff0c\u5f53\u5904\u7406\u5927\u89c4\u6a21\u7684\u6570\u636e\u96c6\u65f6\uff0c\u4f7f\u7528data.table\u5305\u6765\u63d0\u9ad8\u6570\u636e\u5904\u7406\u901f\u5ea6\u662f\u4e00\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\u3002data.table\u4f18\u5316\u4e86\u6570\u636e\u7684\u5206\u7ec4\u548c\u6c42\u548c\u64cd\u4f5c\uff0c\u7279\u522b\u662f\u5728\u5904\u7406\u6570\u767e\u4e07\u751a\u81f3\u66f4\u591a\u8bb0\u5f55\u7684\u5927\u578b\u6570\u636e\u96c6\u65f6\uff0c\u5176\u6548\u80fd\u8868\u73b0\u975e\u5e38\u51fa\u8272\u3002<\/p>\n<\/p>\n
\u603b\u4e4b\uff0cR\u8bed\u8a00\u901a\u8fc7dplyr\u548cdata.table\u7b49\u5305\u4e3a\u6570\u636e\u79d1\u5b66\u5bb6\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u51b3\u6570\u636e\u5206\u7ec4\u4e0e\u6c42\u548c\u7b49\u5404\u79cd\u6570\u636e\u5904\u7406\u9700\u6c42\u3002\u65e0\u8bba\u662f\u521d\u5b66\u8005\u8fd8\u662f\u6709\u7ecf\u9a8c\u7684\u4e13\u5bb6\uff0c\u901a\u8fc7\u5b66\u4e60\u548c\u8fd0\u7528\u8fd9\u4e9b\u5de5\u5177\uff0c\u90fd\u53ef\u4ee5\u5728\u6570\u636e\u5206\u6790\u9879\u76ee\u4e2d\u53d6\u5f97\u66f4\u597d\u7684\u6548\u679c\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
1. R\u8bed\u8a00\u4e2d\u5982\u4f55\u5bf9\u6570\u636e\u6846\u4e2d\u76f8\u540c\u540d\u5b57\u7684\u4eba\u8fdb\u884c\u6570\u636e\u76f8\u52a0\uff1f<\/strong>
\n\u5728R\u8bed\u8a00\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528group_by()\u51fd\u6570\u548csummarize()\u51fd\u6570\u6765\u5bf9\u6570\u636e\u6846\u4e2d\u7684\u76f8\u540c\u540d\u5b57\u7684\u4eba\u8fdb\u884c\u6570\u636e\u76f8\u52a0\u3002\u9996\u5148\uff0c\u53ef\u4ee5\u4f7f\u7528group_by()\u51fd\u6570\u6839\u636e\u540d\u5b57\u8fdb\u884c\u5206\u7ec4\u3002\u7136\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528summarize()\u51fd\u6570\u6765\u5bf9\u6bcf\u4e2a\u5206\u7ec4\u8fdb\u884c\u6c47\u603b\u64cd\u4f5c\uff0c\u4f8b\u5982\u6c42\u548c\u3001\u5e73\u5747\u503c\u7b49\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5f97\u5230\u6309\u7167\u540d\u5b57\u8fdb\u884c\u5206\u7ec4\u5e76\u76f8\u52a0\u7684\u7ed3\u679c\u3002<\/p>\n
2. \u5728R\u8bed\u8a00\u4e2d\uff0c\u5982\u4f55\u7edf\u8ba1\u6570\u636e\u6846\u5185\u6240\u6709\u540d\u5b57\u76f8\u540c\u7684\u4eba\u7684\u6570\u636e\u603b\u548c\uff1f<\/strong>
\n\u82e5\u8981\u7edf\u8ba1\u6570\u636e\u6846\u5185\u6240\u6709\u540d\u5b57\u76f8\u540c\u7684\u4eba\u7684\u6570\u636e\u603b\u548c\uff0c\u53ef\u4ee5\u4f7f\u7528aggregate()\u51fd\u6570\u6765\u5b9e\u73b0\u3002\u901a\u8fc7\u8bbe\u7f6eaggregate()\u51fd\u6570\u4e2d\u7684formula\u53c2\u6570\u5c06\u76f8\u540c\u540d\u5b57\u7684\u4eba\u8fdb\u884c\u5206\u7ec4\uff0c\u5e76\u5728sum\u53c2\u6570\u4e2d\u6307\u5b9a\u8981\u8fdb\u884c\u6c42\u548c\u7684\u6570\u636e\u5217\uff0c\u6700\u540e\u5f97\u5230\u6570\u636e\u603b\u548c\u3002<\/p>\n
3. \u5982\u4f55\u5728R\u8bed\u8a00\u4e2d\u4f7f\u7528dplyr\u5305\u5bf9\u6570\u636e\u6846\u4e2d\u540d\u5b57\u76f8\u540c\u7684\u4eba\u8fdb\u884c\u6570\u636e\u76f8\u52a0\uff1f<\/strong>
\n\u5728R\u8bed\u8a00\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528dplyr\u5305\u4e2d\u7684group_by()\u51fd\u6570\u548csummarize()\u51fd\u6570\u6765\u5bf9\u6570\u636e\u6846\u4e2d\u7684\u76f8\u540c\u540d\u5b57\u7684\u4eba\u8fdb\u884c\u6570\u636e\u76f8\u52a0\u3002\u9996\u5148\uff0c\u4f7f\u7528group_by()\u51fd\u6570\u6309\u7167\u540d\u5b57\u5bf9\u6570\u636e\u6846\u8fdb\u884c\u5206\u7ec4\u3002\u7136\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528summarize()\u51fd\u6570\u5bf9\u6bcf\u4e2a\u5206\u7ec4\u8fdb\u884c\u6c47\u603b\u64cd\u4f5c\uff0c\u4f8b\u5982\u6c42\u548c\u3001\u5e73\u5747\u503c\u7b49\u3002\u6700\u540e\uff0c\u53ef\u4ee5\u5f97\u5230\u6309\u7167\u540d\u5b57\u8fdb\u884c\u5206\u7ec4\u5e76\u76f8\u52a0\u7684\u7ed3\u679c\u3002dplyr\u5305\u63d0\u4f9b\u4e86\u7b80\u6d01\u800c\u76f4\u89c2\u7684\u4ee3\u7801\uff0c\u65b9\u4fbf\u8fdb\u884c\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u64cd\u4f5c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728\u5904\u7406\u6570\u636e\u6846\uff08DataFrame\uff09\u65f6\uff0c\u4f7f\u7528R\u8bed\u8a00\u5c06\u540d\u5b57\u76f8\u540c\u7684\u4eba\u7684\u6570\u636e\u8fdb\u884c\u76f8\u52a0\u662f\u4e00\u79cd\u5e38\u89c1\u9700\u6c42\uff0c\u8fd9\u4e3b\u8981\u5305\u62ec\u4e24\u6b65\uff1a\u6c47 […]","protected":false},"author":3,"featured_media":180585,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/180573"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=180573"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/180573\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/180585"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=180573"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=180573"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=180573"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}