{"id":23309,"date":"2022-11-25T04:55:57","date_gmt":"2022-11-24T23:25:57","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-r-how-can-i-change-a-matrix-array-closed\/"},"modified":"2022-11-25T04:55:57","modified_gmt":"2022-11-24T23:25:57","slug":"solved-r-how-can-i-change-a-matrix-array-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-r-how-can-i-change-a-matrix-array-closed\/","title":{"rendered":"[Solved] R: How can I change a matrix array? [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-17959672\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"17959672\" data-parentid=\"17959559\" data-score=\"1\" 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>Many options here. Unfortunately you don&#8217;t show any effort to resolve the problem or even to make it clear and reproducible. For example, using <code>ifelse<\/code> :<\/p>\n<pre><code>dat &lt;- read.table(text=\"\"aaa\" 28\n                  \"aac\" 8\n                  \"aag\" 20\")\ndat$V1 &lt;- with(dat,ifelse(V1 %in% c('aaa','aag'),'K','N'))\ndat\n  V1 V2\n1  K 28\n2  N  8\n3  K 20\n<\/code><\/pre>\n<p><strong>EDIT<\/strong><br \/>\n If I want to replace &#8220;aaa&#8221; with &#8220;K&#8221;, &#8220;aac&#8221; with &#8220;N&#8221; and &#8220;aag&#8221; with &#8220;G&#8221;:<\/p>\n<pre><code>dat$V1 &lt;- with(dat,ifelse(V1 == 'aaa',\n                          'K',\n                          ifelse(V1=='aac','N','G')))\n dat\n  V1 V2\n1  K 28\n2  N  8\n3  G 20\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">2<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved R: How can I change a matrix array? [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Many options here. Unfortunately you don&#8217;t show any effort to resolve the problem or even to make it clear and reproducible. For example, using ifelse : dat &lt;- read.table(text=&#8221;&#8221;aaa&#8221; 28 &#8220;aac&#8221; 8 &#8220;aag&#8221; 20&#8243;) dat$V1 &lt;- with(dat,ifelse(V1 %in% c(&#8216;aaa&#8217;,&#8217;aag&#8217;),&#8217;K&#8217;,&#8217;N&#8217;)) dat V1 V2 1 K 28 2 N 8 3 K 20 EDIT If I &#8230; <a title=\"[Solved] R: How can I change a matrix array? [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-r-how-can-i-change-a-matrix-array-closed\/\" aria-label=\"More on [Solved] R: How can I change a matrix array? [closed]\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[969,1331,321,1060],"class_list":["post-23309","post","type-post","status-publish","format-standard","hentry","category-solved","tag-bioinformatics","tag-matrix","tag-r","tag-sequence"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] R: How can I change a matrix array? [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-r-how-can-i-change-a-matrix-array-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] R: How can I change a matrix array? [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Many options here. Unfortunately you don&#8217;t show any effort to resolve the problem or even to make it clear and reproducible. For example, using ifelse : dat &lt;- read.table(text=&quot;&quot;aaa&quot; 28 &quot;aac&quot; 8 &quot;aag&quot; 20&quot;) dat$V1 &lt;- with(dat,ifelse(V1 %in% c(&#039;aaa&#039;,&#039;aag&#039;),&#039;K&#039;,&#039;N&#039;)) dat V1 V2 1 K 28 2 N 8 3 K 20 EDIT If I ... 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