{"id":27003,"date":"2022-12-21T19:40:28","date_gmt":"2022-12-21T14:10:28","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-deleting-specific-rows-with-a-patternstart-and-end-indicators-from-a-dataframe-closed\/"},"modified":"2022-12-21T19:40:28","modified_gmt":"2022-12-21T14:10:28","slug":"solved-deleting-specific-rows-with-a-patternstart-and-end-indicators-from-a-dataframe-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-deleting-specific-rows-with-a-patternstart-and-end-indicators-from-a-dataframe-closed\/","title":{"rendered":"[Solved] Deleting specific rows with a pattern[start and end indicators] from a dataframe [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-45483780\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"45483780\" data-parentid=\"45483582\" data-score=\"2\" 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>Using a toy example&#8230;<\/p>\n<pre><code>df &lt;- data.frame(a=LETTERS[1:10],b=LETTERS[3:12],stringsAsFactors = FALSE)\nlimits &lt;- c(\"E\",\"H\")\n\nsapply(df,function(x){\n  del.min &lt;- grep(limits[1],x)\n  del.max &lt;- grep(limits[2],x)\n  x[del.min:del.max] &lt;- \"\"\n  return(x)})\n\n      a   b  \n [1,] \"A\" \"C\"\n [2,] \"B\" \"D\"\n [3,] \"C\" \"\" \n [4,] \"D\" \"\" \n [5,] \"\"  \"\" \n [6,] \"\"  \"\" \n [7,] \"\"  \"I\"\n [8,] \"\"  \"J\"\n [9,] \"I\" \"K\"\n[10,] \"J\" \"L\"\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">4<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Deleting specific rows with a pattern[start and end indicators] from a dataframe [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Using a toy example&#8230; df &lt;- data.frame(a=LETTERS[1:10],b=LETTERS[3:12],stringsAsFactors = FALSE) limits &lt;- c(&#8220;E&#8221;,&#8221;H&#8221;) sapply(df,function(x){ del.min &lt;- grep(limits[1],x) del.max &lt;- grep(limits[2],x) x[del.min:del.max] &lt;- &#8220;&#8221; return(x)}) a b [1,] &#8220;A&#8221; &#8220;C&#8221; [2,] &#8220;B&#8221; &#8220;D&#8221; [3,] &#8220;C&#8221; &#8220;&#8221; [4,] &#8220;D&#8221; &#8220;&#8221; [5,] &#8220;&#8221; &#8220;&#8221; [6,] &#8220;&#8221; &#8220;&#8221; [7,] &#8220;&#8221; &#8220;I&#8221; [8,] &#8220;&#8221; &#8220;J&#8221; [9,] &#8220;I&#8221; &#8220;K&#8221; [10,] &#8220;J&#8221; &#8230; <a title=\"[Solved] Deleting specific rows with a pattern[start and end indicators] from a dataframe [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-deleting-specific-rows-with-a-patternstart-and-end-indicators-from-a-dataframe-closed\/\" aria-label=\"More on [Solved] Deleting specific rows with a pattern[start and end indicators] from a dataframe [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":[1888,461,321],"class_list":["post-27003","post","type-post","status-publish","format-standard","hentry","category-solved","tag-data-cleaning","tag-dataframe","tag-r"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Deleting specific rows with a pattern[start and end indicators] from a dataframe [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-deleting-specific-rows-with-a-patternstart-and-end-indicators-from-a-dataframe-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Deleting specific rows with a pattern[start and end indicators] from a dataframe [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Using a toy example&#8230; df &lt;- data.frame(a=LETTERS[1:10],b=LETTERS[3:12],stringsAsFactors = FALSE) limits &lt;- c(&quot;E&quot;,&quot;H&quot;) sapply(df,function(x){ del.min &lt;- grep(limits[1],x) del.max &lt;- grep(limits[2],x) x[del.min:del.max] &lt;- &quot;&quot; return(x)}) a b [1,] &quot;A&quot; &quot;C&quot; [2,] &quot;B&quot; &quot;D&quot; [3,] &quot;C&quot; &quot;&quot; [4,] &quot;D&quot; &quot;&quot; [5,] &quot;&quot; &quot;&quot; [6,] &quot;&quot; &quot;&quot; [7,] &quot;&quot; &quot;I&quot; [8,] &quot;&quot; &quot;J&quot; [9,] &quot;I&quot; &quot;K&quot; [10,] &quot;J&quot; ... 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