{"id":31584,"date":"2023-05-23T03:37:36","date_gmt":"2023-08-03T14:35:17","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8java%e4%b8%ad%e7%9a%84dataframe\/"},"modified":"2024-04-30T05:30:46","modified_gmt":"2024-04-29T21:30:46","slug":"%e4%bd%bf%e7%94%a8java%e4%b8%ad%e7%9a%84dataframe","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8java%e4%b8%ad%e7%9a%84dataframe\/","title":{"rendered":"\u4f7f\u7528Java\u4e2d\u7684DataFrame"},"content":{"rendered":"<h3>\u4f60\u662f\u5426\u719f\u6089DataFrame\uff1f<\/h3>\n<p>DataFrame\u662f\u4e00\u4e2a\u975e\u5e38\u65b9\u4fbf\u7684\u5e93\u548c\u5bf9\u8c61\uff0c\u5e38\u7528\u4e8e\u5728Python\u548cR\u8bed\u8a00\u4e2d\u5904\u7406\u6570\u636e\u3001\u8fdb\u884c\u673a\u5668\u5b66\u4e60\u3002\u5b83\u63d0\u4f9b\u4e86\u5904\u7406\u8868\u683c\u6570\u636e\u548c\u4e8c\u7ef4\u6570\u7ec4\u6570\u636e\u7684\u5404\u79cd\u529f\u80fd\u3002<\/p>\n<p>\u5c31\u50cfExcel\u6216CSV\u4e00\u6837\uff0c\u53ef\u4ee5\u4e00\u6b21\u8bfb\u53d6\u6570\u636e\uff0c\u63d0\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u4efb\u610f\u884c\u5217\uff0c\u8fd8\u53ef\u4ee5\u50cf\u8fdb\u884cSQL\u64cd\u4f5c\u4e00\u6837\uff0c\u5c06\u8868\u8fde\u63a5\u8d77\u6765\u3002\u65e0\u8bba\u5982\u4f55\uff0c\u8fd9\u5728\u4f7f\u7528\u4e8c\u7ef4\u6570\u636e\u65f6\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002<\/p>\n<p>\u4f46\u662f\u5728Java\u4e2d\uff0c\u6ca1\u6709\u4e0e\u8fd9\u4e2aDataFrame\u76f8\u5f53\u7684\u5b9e\u73b0\uff0c\u65e0\u6cd5\u4eab\u53d7DataFrame\u5e26\u6765\u7684\u597d\u5904\uff0c\u6570\u636e\u5904\u7406\u9700\u8981\u82b1\u8d39\u66f4\u591a\u65f6\u95f4\uff0c\u56e0\u6b64\u4f1a\u906d\u9047\u4e00\u4e9b\u60b2\u4f24\u7684\u7ecf\u5386\uff0c\u6bd4\u5982\u88ab\u8c29\u9a82\u4e3a\u4e3a\u4ec0\u4e48\u4e0d\u7528Python\u7b49\u3002<\/p>\n<h3>\u68a6\u795e\u6570\u636e\u79d1\u5b66\u6846\u67b6<\/h3>\n<p>\u4e0d\u8fc7\uff0c\u90a3\u91cc\u6709\u4e00\u7ebf\u5149\u660e\u3002<br \/>\nMorpheus\u6570\u636e\u79d1\u5b66\u6846\u67b6\u63d0\u4f9b\u4e86\u4e0e\u8be5DataFrame\uff08\u53ef\u80fd\uff09\u76f8\u7b49\u7684\u529f\u80fd\u3002\u94fe\u63a5\uff1ahttps:\/\/github.com\/zavtech\/morpheus-core<\/p>\n<p>\u8ba9\u6211\u4eec\u6309\u7167\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\u6765\u5c1d\u8bd5\u3002<\/p>\n<blockquote><p>\u8003\u8651\u4e00\u4e2a\u6c7d\u8f66\u7279\u5f81\u6570\u636e\u96c6\uff0c\u53ef\u4ee5\u5728\u8fd9\u91cc\u8bbf\u95ee\u3002\u4e0b\u9762\u7684\u4ee3\u7801\u5c06\u6b64CSV\u6570\u636e\u52a0\u8f7d\u5230Morpheus DataFrame\u4e2d\uff0c\u7b5b\u9009\u884c\u4ee5\u4ec5\u5305\u62ec\u90a3\u4e9b\u5177\u6709\u529f\u7387\u91cd\u91cf\u6bd4&gt; 0.1\u7684\u8f66\u8f86\uff08\u5176\u4e2d\u91cd\u91cf\u8f6c\u6362\u4e3a\u5343\u514b\uff09\uff0c\u7136\u540e\u6dfb\u52a0\u4e00\u5217\u4ee5\u8bb0\u5f55\u9ad8\u901f\u516c\u8def\u548c\u57ce\u5e02\u91cc\u7a0b\uff08MPG\uff09\u4e4b\u95f4\u7684\u76f8\u5bf9\u6548\u7387\uff0c\u6309\u7167\u8fd9\u4e2a\u65b0\u6dfb\u52a0\u7684\u5217\u6309\u964d\u5e8f\u5bf9\u884c\u8fdb\u884c\u6392\u5e8f\uff0c\u6700\u540e\u5c06\u8fd9\u4e2a\u8f6c\u6362\u540e\u7684\u7ed3\u679c\u8bb0\u5f55\u5230CSV\u6587\u4ef6\u4e2d\u3002<\/p><\/blockquote>\n<p>\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u8f66\u8f86\u7279\u6027\u6570\u636e\u3002\u5c06CSV\u6587\u4ef6\u8bfb\u5165Morpheus DataFrame\uff0c\u8fc7\u6ee4\u51fa\u99ac\u529b\u91cd\u91cf\u6bd4\u8d85\u8fc70.1\u7684\u884c\uff0c\u5e76\u6dfb\u52a0\u9ad8\u901f\u516c\u8def\/\u57ce\u5e02\u533a\u7684MPG\u71c3\u6599\u6bd4\u7387\u5217\u3002\u6309\u7167\u6dfb\u52a0\u7684\u5217\u8fdb\u884c\u6392\u5e8f\uff0c\u5e76\u5c06\u7ed3\u679c\u8f93\u51fa\u5230CSV\u6587\u4ef6\u4e2d\u3002<\/p>\n<h4>\u6837\u672c\u4ee3\u7801\u548c\u6267\u884c\u7ed3\u679c<\/h4>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">com.zavtech.morpheus.frame.*<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">MorpheusTester<\/span> <span class=\"o\">{<\/span>\r\n\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n\r\n        <span class=\"nc\">DataFrame<\/span><span class=\"o\">.<\/span><span class=\"na\">read<\/span><span class=\"o\">().<\/span><span class=\"na\">csv<\/span><span class=\"o\">(<\/span><span class=\"n\">options<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"n\">options<\/span><span class=\"o\">.<\/span><span class=\"na\">setResource<\/span><span class=\"o\">(<\/span><span class=\"s\">\"http:\/\/zavtech.com\/data\/samples\/cars93.csv\"<\/span><span class=\"o\">);<\/span>\r\n            <span class=\"n\">options<\/span><span class=\"o\">.<\/span><span class=\"na\">setExcludeColumnIndexes<\/span><span class=\"o\">(<\/span><span class=\"mi\">0<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"o\">}).<\/span><span class=\"na\">rows<\/span><span class=\"o\">().<\/span><span class=\"na\">select<\/span><span class=\"o\">(<\/span><span class=\"n\">row<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"kt\">double<\/span> <span class=\"n\">weightKG<\/span> <span class=\"o\">=<\/span> <span class=\"n\">row<\/span><span class=\"o\">.<\/span><span class=\"na\">getDouble<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Weight\"<\/span><span class=\"o\">)<\/span> <span class=\"o\">*<\/span> <span class=\"mf\">0.453592d<\/span><span class=\"o\">;<\/span>\r\n            <span class=\"kt\">double<\/span> <span class=\"n\">horsepower<\/span> <span class=\"o\">=<\/span> <span class=\"n\">row<\/span><span class=\"o\">.<\/span><span class=\"na\">getDouble<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Horsepower\"<\/span><span class=\"o\">);<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"n\">horsepower<\/span> <span class=\"o\">\/<\/span> <span class=\"n\">weightKG<\/span> <span class=\"o\">&gt;<\/span> <span class=\"mf\">0.1d<\/span><span class=\"o\">;<\/span>\r\n        <span class=\"o\">}).<\/span><span class=\"na\">cols<\/span><span class=\"o\">().<\/span><span class=\"na\">add<\/span><span class=\"o\">(<\/span><span class=\"s\">\"MPG(Highway\/City)\"<\/span><span class=\"o\">,<\/span> <span class=\"nc\">Double<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">,<\/span> <span class=\"n\">v<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"kt\">double<\/span> <span class=\"n\">cityMpg<\/span> <span class=\"o\">=<\/span> <span class=\"n\">v<\/span><span class=\"o\">.<\/span><span class=\"na\">row<\/span><span class=\"o\">().<\/span><span class=\"na\">getDouble<\/span><span class=\"o\">(<\/span><span class=\"s\">\"MPG.city\"<\/span><span class=\"o\">);<\/span>\r\n            <span class=\"kt\">double<\/span> <span class=\"n\">highwayMpg<\/span> <span class=\"o\">=<\/span> <span class=\"n\">v<\/span><span class=\"o\">.<\/span><span class=\"na\">row<\/span><span class=\"o\">().<\/span><span class=\"na\">getDouble<\/span><span class=\"o\">(<\/span><span class=\"s\">\"MPG.highway\"<\/span><span class=\"o\">);<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"n\">highwayMpg<\/span> <span class=\"o\">\/<\/span> <span class=\"n\">cityMpg<\/span><span class=\"o\">;<\/span>\r\n        <span class=\"o\">}).<\/span><span class=\"na\">rows<\/span><span class=\"o\">().<\/span><span class=\"na\">sort<\/span><span class=\"o\">(<\/span><span class=\"kc\">false<\/span><span class=\"o\">,<\/span> <span class=\"s\">\"MPG(Highway\/City)\"<\/span><span class=\"o\">).<\/span><span class=\"na\">write<\/span><span class=\"o\">().<\/span><span class=\"na\">csv<\/span><span class=\"o\">(<\/span><span class=\"n\">options<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"n\">options<\/span><span class=\"o\">.<\/span><span class=\"na\">setFile<\/span><span class=\"o\">(<\/span><span class=\"s\">\".\/cars93m.csv\"<\/span><span class=\"o\">);<\/span>\r\n            <span class=\"n\">options<\/span><span class=\"o\">.<\/span><span class=\"na\">setTitle<\/span><span class=\"o\">(<\/span><span class=\"s\">\"DataFrame\"<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"o\">});<\/span>\r\n\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u7531\u4e8e\u8fd4\u56de\u7c7b\u578b\u662fDataFrame\u7c7b\u578b\uff0c\u56e0\u6b64\u53ef\u4ee5\u4f7f\u7528\u65b9\u6cd5\u94fe\u4f9d\u6b21\u6267\u884ccsv()\u3001select()\u3001add()\u548csort()\u3002csv()\u90e8\u5206\u975e\u5e38\u5145\u6ee1DataFrame\u7684\u5473\u9053\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d0d8237434c4406beb11f\/12-1.png\" alt=\"image.png\" \/><\/div>\n<p>DataFrame\u5177\u6709\u4e30\u5bcc\u7684\u529f\u80fd\uff0c\u6d4b\u8bd5\u5176\u662f\u5426\u5177\u6709\u76f8\u540c\u529f\u80fd\u5e76\u4e0d\u5bb9\u6613\uff0c\u4f46\u53ef\u4ee5\u786e\u8ba4\u8fdb\u884c\u884c\u62bd\u53d6\u3001\u5217\u6dfb\u52a0\u548c\u6392\u5e8f\u7b49\u64cd\u4f5c\u3002<\/p>\n<p>\u6211\u8ba4\u4e3a\u5728\u5904\u7406\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528Java\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f60\u662f\u5426\u719f\u6089DataFrame\uff1f DataFrame\u662f\u4e00\u4e2a\u975e\u5e38\u65b9\u4fbf\u7684\u5e93\u548c\u5bf9\u8c61\uff0c\u5e38\u7528\u4e8e\u5728Python\u548cR\u8bed\u8a00\u4e2d\u5904\u7406 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-31584","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"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>\u4f7f\u7528Java\u4e2d\u7684DataFrame - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528java\u4e2d\u7684dataframe\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528Java\u4e2d\u7684DataFrame\" \/>\n<meta property=\"og:description\" content=\"\u4f60\u662f\u5426\u719f\u6089DataFrame\uff1f DataFrame\u662f\u4e00\u4e2a\u975e\u5e38\u65b9\u4fbf\u7684\u5e93\u548c\u5bf9\u8c61\uff0c\u5e38\u7528\u4e8e\u5728Python\u548cR\u8bed\u8a00\u4e2d\u5904\u7406 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528java\u4e2d\u7684dataframe\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-08-03T14:35:17+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-29T21:30:46+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d0d8237434c4406beb11f\/12-1.png\" \/>\n<meta name=\"author\" content=\"\u65b0, \u97f5\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u65b0, \u97f5\" \/>\n\t<meta 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