{"id":418,"date":"2023-08-12T12:31:27","date_gmt":"2023-09-28T00:32:26","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e5%9c%a8r%e4%b8%ad%e5%b0%86csv%e6%96%87%e4%bb%b6%e8%af%bb%e5%85%a5%e6%95%b0%e6%8d%ae%e6%a1%86%e6%9e%b6%e4%b8%ad%e3%80%82\/"},"modified":"2025-08-02T06:44:21","modified_gmt":"2025-08-01T22:44:21","slug":"%e5%9c%a8r%e4%b8%ad%e5%b0%86csv%e6%96%87%e4%bb%b6%e8%af%bb%e5%85%a5%e6%95%b0%e6%8d%ae%e6%a1%86%e6%9e%b6%e4%b8%ad%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8r%e4%b8%ad%e5%b0%86csv%e6%96%87%e4%bb%b6%e8%af%bb%e5%85%a5%e6%95%b0%e6%8d%ae%e6%a1%86%e6%9e%b6%e4%b8%ad%e3%80%82\/","title":{"rendered":"R\u8bed\u8a00\u6559\u7a0b\uff1a\u9ad8\u6548\u8bfb\u53d6CSV\u6587\u4ef6\u5230\u6570\u636e\u6846\u7684\u65b9\u6cd5"},"content":{"rendered":"<p>\u5728R\u63d0\u4f9b\u7684\u7279\u5b9a\u529f\u80fd\u7684\u5e2e\u52a9\u4e0b\uff0c\u5c06CSV\u6587\u4ef6\u8bfb\u5165\u6570\u636e\u6846\u67b6\u53d8\u5f97\u66f4\u52a0\u7b80\u5355\u3002<\/p>\n<h2>CSV\u6587\u4ef6\u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>CSV\u662f\u9017\u53f7\u5206\u9694\u503c(Comma-Separated Values)\u7684\u7f29\u5199\u3002\u5728\u8fd9\u79cd\u6587\u4ef6\u683c\u5f0f\u4e2d\uff0c\u5b58\u50a8\u7684\u6570\u636e\u503c\u662f\u7528\u9017\u53f7\u5206\u9694\u7684\u3002\u8fd9\u79cd\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\u975e\u5e38\u4fbf\u6377\u3002<\/p>\n<hr>\n<h2>\u4e3a\u4ec0\u4e48CSV\u662f\u6700\u5e38\u7528\u7684\u6570\u636e\u5b58\u50a8\u6587\u4ef6\u683c\u5f0f\uff1f<\/h2>\n<p>\u5728\u8bb8\u591a\u516c\u53f8\u4e2d\uff0c\u5c06\u6570\u636e\u5b58\u50a8\u5728Excel\u8868\u683c\u4e2d\u662f\u6700\u5e38\u89c1\u7684\u505a\u6cd5\u3002\u5927\u591a\u6570\u516c\u53f8\u9009\u62e9\u5c06\u6570\u636e\u5b58\u50a8\u4e3a\u9017\u53f7\u5206\u9694\u503c\uff08CSV\uff09\u683c\u5f0f\uff0c\u56e0\u4e3a\u8fd9\u4e2a\u8fc7\u7a0b\u6bd4\u521b\u5efa\u666e\u901a\u7535\u5b50\u8868\u683c\u66f4\u52a0\u7b80\u5355\u3002\u968f\u540e\uff0c\u4ed6\u4eec\u53ef\u4ee5\u4f7f\u7528R\u7684\u5185\u7f6e\u5305\u6765\u8bfb\u53d6\u548c\u5206\u6790\u8fd9\u4e9b\u6570\u636e\u3002<\/p>\n<p>\u4f5c\u4e3a\u6700\u53d7\u6b22\u8fce\u548c\u529f\u80fd\u5f3a\u5927\u7684\u7edf\u8ba1\u5206\u6790\u7f16\u7a0b\u8bed\u8a00\uff0cR\u63d0\u4f9b\u4e86\u7279\u5b9a\u7684\u51fd\u6570\uff0c\u53ef\u4ee5\u4eceCSV\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6570\u636e\u5e76\u5c06\u5176\u7ec4\u7ec7\u4e3a\u6570\u636e\u6846\u67b6\u3002<\/p>\n<hr>\n<h2>\u8bfb\u53d6 CSV \u6587\u4ef6\u5e76\u8f6c\u6362\u4e3a\u6570\u636e\u6846\u67b6<\/h2>\n<p>\u5728\u8fd9\u4e2a\u7b80\u77ed\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u5c55\u793a\u5982\u4f55\u5c06CSV\u6587\u4ef6\u8bfb\u5165\u5230\u7ec4\u7ec7\u597d\u7684\u6570\u636e\u6846\u67b6\u4e2d\u3002<\/p>\n<p>\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\uff0c\u9996\u5148\u8981\u505a\u7684\u662f\u83b7\u53d6\u5e76\u8bbe\u7f6e\u5de5\u4f5c\u76ee\u5f55\u3002\u60a8\u9700\u8981\u9009\u62e9 CSV \u6587\u4ef6\u6240\u5728\u7684\u5de5\u4f5c\u8def\u5f84\u3002<\/p>\n<h3>\u5efa\u7acb\u5de5\u4f5c\u76ee\u5f55<\/h3>\n<p>\u5728\u8fd9\u91cc\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528getwd()\u51fd\u6570\u6765\u68c0\u67e5\u9ed8\u8ba4\u7684\u5de5\u4f5c\u76ee\u5f55\uff0c\u540c\u65f6\u4f60\u4e5f\u53ef\u4ee5\u4f7f\u7528setwd()\u51fd\u6570\u6765\u66f4\u6539\u76ee\u5f55\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token operator\">&gt;<\/span>getwd<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># \u663e\u793a\u9ed8\u8ba4\u5de5\u4f5c\u76ee\u5f55<\/span>\r\n\r\n<span class=\"token operator\">-<\/span><span class=\"token operator\">-<\/span><span class=\"token operator\">-<\/span><span class=\"token operator\">-&gt;<\/span>   <span class=\"token string\">\"C:\/Users\/Dell\/Documents\"<\/span>\r\n\r\n<span class=\"token operator\">&gt;<\/span> setwd<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"C:\\Users\\Dell\\Documents\\R-test data\"<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># \u8bbe\u7f6e\u65b0\u7684\u5de5\u4f5c\u76ee\u5f55<\/span>\r\n\r\n<span class=\"token operator\">&gt;<\/span> getwd<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># \u67e5\u770b\u66f4\u65b0\u540e\u7684\u5de5\u4f5c\u76ee\u5f55<\/span>\r\n\r\n<span class=\"token operator\">-<\/span><span class=\"token operator\">-<\/span><span class=\"token operator\">-<\/span><span class=\"token operator\">-&gt;<\/span> <span class=\"token string\">\"C:\/Users\/Dell\/Documents\/R-test data\"<\/span>\r\n<\/code><\/pre>\n<h3>2. \u5bfc\u5165\u5e76\u8bfb\u53d6\u6570\u636e\u96c6\/CSV\u6587\u4ef6<\/h3>\n<p>\u5728\u8bbe\u5b9a\u597d\u5de5\u4f5c\u8def\u5f84\u4e4b\u540e\uff0c\u60a8\u9700\u8981\u6309\u7167\u4ee5\u4e0b\u6240\u793a\u7684\u65b9\u5f0f\u5bfc\u5165\u6570\u636e\u96c6\u6216CSV\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token operator\">&gt;<\/span> readfile <span class=\"token operator\">&lt;-<\/span> read.csv<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"testdata.txt\"<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u5728R Studio\u4e2d\u6267\u884c\u4e0a\u8ff0\u4ee3\u7801\u4ee5\u83b7\u5f97\u5982\u4e0b\u6240\u793a\u7684\u6570\u636e\u6846\u67b6\u3002<\/p>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648c9ea4b2f92e6c733365\/18-0.png\" class='post-images' alt=\"\u5728R\u4e2d\u52a0\u8f7dCSV\u6587\u4ef6\" title=\"\u5728R\u4e2d\u52a0\u8f7dCSV\u6587\u4ef6\">\n                        <\/div>\n<p>\u6267\u884c\u4ee5\u4e0b\u4ee3\u7801\u4ee5\u68c0\u67e5\u53d8\u91cf&#8217;readfile&#8217;\u7684\u7c7b\u578b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token operator\">&gt;<\/span> class<span class=\"token punctuation\">(<\/span>readfile<span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token operator\">-<\/span><span class=\"token operator\">-<\/span><span class=\"token operator\">-<\/span><span class=\"token operator\">-&gt;<\/span> <span class=\"token string\">\"data.frame\"<\/span>            \r\n\r\n<\/code><\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u56fe\u50cf\u4e2d\uff0c\u60a8\u53ef\u4ee5\u770b\u5230\u6570\u636e\u6846\u67b6\uff0c\u5176\u4e2d\u5305\u542b\u5b66\u751f\u59d3\u540d\u3001ID\u3001\u7cfb\u522b\u3001\u6027\u522b\u548c\u6210\u7ee9\u7684\u4fe1\u606f\u3002<\/p>\n<h3>\u4eceCSV\u6587\u4ef6\u4e2d\u63d0\u53d6\u5b66\u751f\u7684\u4fe1\u606f<\/h3>\n<p>\u5728\u83b7\u5f97\u6570\u636e\u6846\u67b6\u4e4b\u540e\uff0c\u73b0\u5728\u53ef\u4ee5\u5bf9\u6570\u636e\u8fdb\u884c\u5206\u6790\u3002\u60a8\u53ef\u4ee5\u4ece\u6570\u636e\u6846\u67b6\u4e2d\u63d0\u53d6\u7279\u5b9a\u7684\u4fe1\u606f\u3002<\/p>\n<p>\u62bd\u53d6\u5b66\u751f\u53d6\u5f97\u7684\u6700\u9ad8\u5206<\/p>\n<pre class=\"post-pre\"><code><span class=\"token operator\">&gt;<\/span> marks <span class=\"token operator\">&lt;-<\/span> max<span class=\"token punctuation\">(<\/span>data<span class=\"token operator\">$<\/span>Marks.Scored<span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># \u8fd9\u5c06\u7ed9\u51fa\u6700\u9ad8\u5206<\/span>\r\n\r\n<span class=\"token comment\"># \u63d0\u53d6\u83b7\u5f97\u6700\u9ad8\u5206\u7684\u5b66\u751f\u7684\u8be6\u7ec6\u4fe1\u606f<\/span>\r\n\r\n<span class=\"token operator\">&gt;<\/span> data <span class=\"token operator\">&lt;-<\/span> read.csv<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"traindata.csv\"<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token operator\">&gt;<\/span> Marks <span class=\"token operator\">&lt;-<\/span> max<span class=\"token punctuation\">(<\/span>data<span class=\"token operator\">$<\/span>Marks.Scored<span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token operator\">&gt;<\/span> retval <span class=\"token operator\">&lt;-<\/span> subset<span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">,<\/span> Marks.Scored <span class=\"token operator\">==<\/span> max<span class=\"token punctuation\">(<\/span>Marks.Scored<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>   <span class=\"token comment\"># \u8fd9\u5c06\u63d0\u53d6\u83b7\u5f97\u6700\u9ad8\u5206\u7684\u5b66\u751f\u7684\u8be6\u7ec6\u4fe1\u606f<\/span>\r\n\r\n<span class=\"token operator\">&gt;<\/span> View<span class=\"token punctuation\">(<\/span>retval<span class=\"token punctuation\">)<\/span>\r\n\r\n<\/code><\/pre>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648c9ea4b2f92e6c733365\/26-0.png\" class='post-images' alt=\"\u5728R\u4e2d\u5c06CSV\u6587\u4ef6\u8bfb\u5165\u6570\u636e\u6846\u67b6\" title=\"\u5728R\u4e2d\u5c06CSV\u6587\u4ef6\u8bfb\u5165\u6570\u636e\u6846\u67b6\">\n                        <\/div>\n<p>\u63d0\u53d6\u6b63\u5728\u5b66\u4e60\u5316\u5b66\u7cfb\u7684\u5b66\u751f\u7684\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token operator\">&gt;<\/span> readfile <span class=\"token operator\">&lt;-<\/span> read.csv<span class=\"token punctuation\">(<\/span><span class=\"token string\">\"traindata.csv\"<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token operator\">&gt;<\/span> retval <span class=\"token operator\">&lt;-<\/span> subset<span class=\"token punctuation\">(<\/span> data<span class=\"token punctuation\">,<\/span> Department <span class=\"token operator\">==<\/span> <span class=\"token string\">\"chemistry\"<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u8fd9\u5c06\u63d0\u53d6\u5316\u5b66\u7cfb\u5b66\u751f\u7684\u8be6\u7ec6\u4fe1\u606f<\/span> \r\n\r\n<span class=\"token operator\">&gt;<\/span> View<span class=\"token punctuation\">(<\/span>retval<span class=\"token punctuation\">)<\/span>\r\n\r\n<\/code><\/pre>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648c9ea4b2f92e6c733365\/29-0.png\" class='post-images' alt=\"\u5728R\u4e2d\u4eceCSV\u6587\u4ef6\u63d0\u53d6\u5b66\u751f\u4fe1\u606f\" title=\"\u5728R\u4e2d\u4eceCSV\u6587\u4ef6\u63d0\u53d6\u5b66\u751f\u4fe1\u606f\">\n                        <\/div>\n<hr>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u901a\u8fc7\u4f7f\u7528read.csv(&#8220;&#8221;)\u51fd\u6570\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u6b64\u8fc7\u7a0b\u5728R\u4e2d\u8bfb\u53d6csv\u6587\u4ef6\u3002\u672c\u6559\u7a0b\u4ecb\u7ecd\u4e86\u5982\u4f55\u5bfc\u5165csv\u6587\u4ef6\u3001\u8bfb\u53d6csv\u6587\u4ef6\u4ee5\u53ca\u4ece\u6570\u636e\u6846\u67b6\u4e2d\u63d0\u53d6\u4e00\u4e9b\u7279\u5b9a\u4fe1\u606f\u3002<\/p>\n<p>\u6211\u5728\u8fd9\u4e2a\u9879\u76ee\u4e2d\u4f7f\u7528\u4e86R Studio\u3002RStudio\u63d0\u4f9b\u4e86\u5f88\u68d2\u7684\u529f\u80fd\uff0c\u4f8b\u5982\u63a7\u5236\u53f0\u3001\u7f16\u8f91\u5668\u548c\u73af\u5883\u7b49\u7b49\u3002\u5f53\u7136\uff0c\u4f60\u4e5f\u53ef\u4ee5\u81ea\u7531\u9009\u62e9\u5176\u4ed6\u7f16\u8f91\u5668\uff0c\u6bd4\u5982Thinn-R\u3001Crimson editor\u7b49\u7b49\u3002\u6211\u5e0c\u671b\u8fd9\u4e2a\u6559\u7a0b\u80fd\u591f\u5e2e\u52a9\u4f60\u7406\u89e3\u5982\u4f55\u5728R\u4e2d\u8bfb\u53d6CSV\u6587\u4ef6\u5e76\u4ece\u6570\u636e\u6846\u67b6\u4e2d\u63d0\u53d6\u4e00\u4e9b\u4fe1\u606f\u3002<\/p>\n<p>\u66f4\u591a\u9605\u8bfb\u8bf7\u53c2\u8003\uff1ahttps:\/\/cran.r-project.org\/manuals.html<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728R\u63d0\u4f9b\u7684\u7279\u5b9a\u529f\u80fd\u7684\u5e2e\u52a9\u4e0b\uff0c\u5c06CSV\u6587\u4ef6\u8bfb\u5165\u6570\u636e\u6846\u67b6\u53d8\u5f97\u66f4\u52a0\u7b80\u5355\u3002 CSV\u6587\u4ef6\u662f\u4ec0\u4e48\uff1f CSV\u662f\u9017\u53f7\u5206\u9694\u503c(C [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1323,586,567,1324,735],"class_list":["post-418","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-csv","tag-r","tag-567","tag-1324","tag-735"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>R\u8bed\u8a00\u6559\u7a0b\uff1a\u9ad8\u6548\u8bfb\u53d6CSV\u6587\u4ef6\u5230\u6570\u636e\u6846\u7684\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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