{"id":3902,"date":"2022-08-20T22:58:42","date_gmt":"2022-08-20T17:28:42","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-two-by-two-matching-between-dataframes-in-r\/"},"modified":"2022-08-20T22:58:42","modified_gmt":"2022-08-20T17:28:42","slug":"solved-two-by-two-matching-between-dataframes-in-r","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-two-by-two-matching-between-dataframes-in-r\/","title":{"rendered":"(Solved) Two by two matching between dataframes in r"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-12123078\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"12123078\" data-parentid=\"12123013\" data-score=\"4\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>You want the <code>merge<\/code> function.  Since your column names that you want to match on already have the same name you don&#8217;t even need to do anything special.  If that wasn&#8217;t the case you would want to look into the <code>by.x<\/code> and <code>by.y<\/code> parameters that merge takes.<\/p>\n<pre><code>df1 = data.frame(Site.1=c(\"A\",\"A\",\"B\"),Site.2=c(\"B\",\"C\",\"C\"),Score1=c(60,70,80))\ndf2 = data.frame(Site.1=c(\"B\",\"A\",\"A\"),Site.2=c(\"C\",\"B\",\"C\"), Score2=c(10,20,30))\ndf3 = data.frame(Site.1=c(\"A\",\"A\",\"B\"),Site.2=c(\"B\",\"C\",\"C\"), Score1=c(60,70,80),Score2=c(20,30,10))\ndf3\n\n# Merge gives you what you want\nmerge(df1, df2)\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">1<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Two by two matching between dataframes in r <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] You want the merge function. Since your column names that you want to match on already have the same name you don&#8217;t even need to do anything special. If that wasn&#8217;t the case you would want to look into the by.x and by.y parameters that merge takes. df1 = data.frame(Site.1=c(&#8220;A&#8221;,&#8221;A&#8221;,&#8221;B&#8221;),Site.2=c(&#8220;B&#8221;,&#8221;C&#8221;,&#8221;C&#8221;),Score1=c(60,70,80)) df2 = data.frame(Site.1=c(&#8220;B&#8221;,&#8221;A&#8221;,&#8221;A&#8221;),Site.2=c(&#8220;C&#8221;,&#8221;B&#8221;,&#8221;C&#8221;), Score2=c(10,20,30)) &#8230; <a title=\"(Solved) Two by two matching between dataframes in r\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-two-by-two-matching-between-dataframes-in-r\/\" aria-label=\"More on (Solved) Two by two matching between dataframes in r\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[461,462,460,321],"class_list":["post-3902","post","type-post","status-publish","format-standard","hentry","category-solved","tag-dataframe","tag-match","tag-merge","tag-r"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>(Solved) Two by two matching between dataframes in r - JassWeb<\/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:\/\/jassweb.com\/solved\/solved-two-by-two-matching-between-dataframes-in-r\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"(Solved) Two by two matching between dataframes in r - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] You want the merge function. Since your column names that you want to match on already have the same name you don&#8217;t even need to do anything special. If that wasn&#8217;t the case you would want to look into the by.x and by.y parameters that merge takes. df1 = data.frame(Site.1=c(&quot;A&quot;,&quot;A&quot;,&quot;B&quot;),Site.2=c(&quot;B&quot;,&quot;C&quot;,&quot;C&quot;),Score1=c(60,70,80)) df2 = data.frame(Site.1=c(&quot;B&quot;,&quot;A&quot;,&quot;A&quot;),Site.2=c(&quot;C&quot;,&quot;B&quot;,&quot;C&quot;), Score2=c(10,20,30)) ... 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JassWeb","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/jassweb.com\/solved\/solved-two-by-two-matching-between-dataframes-in-r\/","og_locale":"en_US","og_type":"article","og_title":"(Solved) Two by two matching between dataframes in r - JassWeb","og_description":"[ad_1] You want the merge function. Since your column names that you want to match on already have the same name you don&#8217;t even need to do anything special. If that wasn&#8217;t the case you would want to look into the by.x and by.y parameters that merge takes. df1 = data.frame(Site.1=c(\"A\",\"A\",\"B\"),Site.2=c(\"B\",\"C\",\"C\"),Score1=c(60,70,80)) df2 = data.frame(Site.1=c(\"B\",\"A\",\"A\"),Site.2=c(\"C\",\"B\",\"C\"), Score2=c(10,20,30)) ... 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