{"id":1862,"date":"2023-07-24T16:53:11","date_gmt":"2023-07-24T16:53:11","guid":{"rendered":"https:\/\/statorials.org\/my\/na\/"},"modified":"2023-07-24T16:53:11","modified_gmt":"2023-07-24T16:53:11","slug":"na","status":"publish","type":"post","link":"https:\/\/statorials.org\/my\/na\/","title":{"rendered":"R \u1010\u103d\u1004\u103a is.na \u1000\u102d\u102f\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u100a\u103a\u1038 (\u1025\u1015\u1019\u102c\u1019\u103b\u102c\u1038\u1014\u103e\u1004\u1037\u103a\u1021\u1010\u1030)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Vector \u1019\u103b\u102c\u1038\u1014\u103e\u1004\u1037\u103a \u1012\u1031\u1010\u102c\u1018\u1031\u102c\u1004\u103a\u1019\u103b\u102c\u1038\u1010\u103d\u1004\u103a \u1015\u103b\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1014\u1031\u101e\u1031\u102c\u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1005\u1005\u103a\u1006\u1031\u1038\u101b\u1014\u103a R \u101b\u103e\u102d <strong>is.na()<\/strong> \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1000\u102d\u102f \u101e\u1004\u103a\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u101e\u100a\u103a\u104b<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#check if each individual value is NA\n<\/span>is. <span style=\"color: #3366ff;\">na<\/span> (x)\n\n<span style=\"color: #008080;\">#count total NA values\n<\/span>sum( <span style=\"color: #3366ff;\">is.na<\/span> (x))\n\n<span style=\"color: #008080;\">#identify positions of NA values\n<\/span>which(is. <span style=\"color: #3366ff;\">na<\/span> (x))\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\u1021\u1031\u102c\u1000\u103a\u1016\u1031\u102c\u103a\u1015\u103c\u1015\u102b \u1025\u1015\u1019\u102c\u1019\u103b\u102c\u1038\u101e\u100a\u103a \u1024\u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1000\u102d\u102f \u101c\u1000\u103a\u1010\u103d\u1031\u1037\u1021\u101e\u102f\u1036\u1038\u1001\u103b\u1014\u100a\u103a\u1038\u1000\u102d\u102f \u1015\u103c\u101e\u1011\u102c\u1038\u101e\u100a\u103a\u104b<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\u1025\u1015\u1019\u102c 1- vector \u1019\u103b\u102c\u1038\u1014\u103e\u1004\u1037\u103a\u1021\u1010\u1030 is.na() \u1000\u102d\u102f\u101e\u102f\u1036\u1038\u1015\u102b\u104b<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\u1021\u1031\u102c\u1000\u103a\u1015\u102b\u1000\u102f\u1012\u103a\u101e\u100a\u103a vector \u1010\u1005\u103a\u1001\u102f\u1010\u103d\u1004\u103a \u1015\u103b\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1014\u1031\u101e\u1031\u102c \u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1005\u1005\u103a\u1006\u1031\u1038\u101b\u1014\u103a <strong>is.na()<\/strong> \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u100a\u103a\u1038\u1000\u102d\u102f \u1015\u103c\u101e\u101e\u100a\u103a-<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define vector with some missing values\n<span style=\"color: #000000;\">x &lt;- c(3, 5, 5, NA, 7, NA, 12, 16)<\/span>\n\n#check if each individual value is NA\n<\/span>is. <span style=\"color: #3366ff;\">na<\/span> (x)\n\n[1] FALSE FALSE FALSE TRUE FALSE TRUE FALSE FALSE\n\n<span style=\"color: #008080;\">#count total NA values\n<\/span>sum( <span style=\"color: #3366ff;\">is.na<\/span> (x))\n\n[1] 2\n\n<span style=\"color: #008080;\">#identify positions of NA values\n<\/span>which(is. <span style=\"color: #3366ff;\">na<\/span> (x))\n\n[1] 4 6\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\u101b\u101c\u1012\u103a\u1019\u103e \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037 \u1019\u103c\u1004\u103a\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a-<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">vector \u1010\u103d\u1004\u103a \u1015\u103b\u1031\u102c\u1000\u103a\u1014\u1031\u101e\u1031\u102c\u1010\u1014\u103a\u1016\u102d\u102f\u1038 2 \u1001\u102f\u101b\u103e\u102d\u101e\u100a\u103a\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u1015\u103b\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u101e\u100a\u103a \u1021\u1014\u1031\u1021\u1011\u102c\u1038 4 \u1014\u103e\u1004\u1037\u103a 6 \u1010\u103d\u1004\u103a\u1010\u100a\u103a\u101b\u103e\u102d\u101e\u100a\u103a\u104b<\/span><\/li>\n<\/ul>\n<h3> <span style=\"color: #000000;\"><strong>\u1025\u1015\u1019\u102c 2-<\/strong><\/span> <span style=\"color: #000000;\"><strong>\u1012\u1031\u1010\u102c\u1018\u1031\u102c\u1004\u103a\u1019\u103b\u102c\u1038\u1016\u103c\u1004\u1037\u103a is.na() \u1000\u102d\u102f\u101e\u102f\u1036\u1038\u1015\u102b\u104b<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\u1021\u1031\u102c\u1000\u103a\u1015\u102b\u1000\u102f\u1012\u103a\u101e\u100a\u103a \u1012\u1031\u1010\u102c\u1018\u1031\u102c\u1004\u103a\u1010\u1005\u103a\u1001\u102f\u1021\u1010\u103d\u1004\u103a\u1038 \u1015\u103b\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1014\u1031\u101e\u1031\u102c\u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1005\u1005\u103a\u1006\u1031\u1038\u101b\u1014\u103a is.na() \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1000\u102d\u102f \u1019\u100a\u103a\u101e\u102d\u102f\u1037\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u101b\u1019\u100a\u103a\u1000\u102d\u102f \u1015\u103c\u101e\u101e\u100a\u103a-<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#create data frame\n<\/span>df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (var1=c(1, 3, 3, 4, 5),\n                 var2=c(7, NA, NA, 3, 2),\n                 var3=c(3, 3, 6, NA, 8),\n                 var4=c(NA, 1, 2, 8, 9))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  var1 var2 var3 var4\n1 1 7 3 NA\n2 3 NA 3 1\n3 3 NA 6 2\n4 4 3 NA 8\n5 5 2 8 9\n\n<span style=\"color: #008080;\">#find total NA values in data frame\n<\/span>sum( <span style=\"color: #3366ff;\">is.na<\/span> (df))\n\n[1] 4\n\n<span style=\"color: #008080;\">#find total NA values by column\n<\/span>sapply(df, <span style=\"color: #008000;\">function<\/span> (x) sum(is. <span style=\"color: #3366ff;\">na<\/span> (x)))\n\nvar1 var2 var3 var4 \n   0 2 1 1<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">output \u1019\u103e data frame \u1010\u103d\u1004\u103a \u1005\u102f\u1005\u102f\u1015\u1031\u102b\u1004\u103a\u1038 NA values <strong>4 \u1001\u102f<\/strong> \u101b\u103e\u102d\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u1010\u103d\u1031\u1037\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101c\u100a\u103a\u1038 \u1019\u103c\u1004\u103a\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a-<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\u201cvar1\u201d \u1000\u1031\u102c\u103a\u101c\u1036\u1010\u103d\u1004\u103a <strong>0<\/strong> NA \u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038 \u101b\u103e\u102d\u1015\u102b\u101e\u100a\u103a\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u201cvar2\u201d \u1000\u1031\u102c\u103a\u101c\u1036\u1010\u103d\u1004\u103a NA \u1010\u1014\u103a\u1016\u102d\u102f\u1038 <strong>\u1042 \u1001\u102f<\/strong> \u101b\u103e\u102d\u101e\u100a\u103a\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u201cvar3\u201d \u1000\u1031\u102c\u103a\u101c\u1036\u1010\u103d\u1004\u103a NA \u1010\u1014\u103a\u1016\u102d\u102f\u1038 <strong>1 \u1001\u102f<\/strong> \u101b\u103e\u102d\u101e\u100a\u103a\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u201cvar4\u201d \u1000\u1031\u102c\u103a\u101c\u1036\u1010\u103d\u1004\u103a NA \u1010\u1014\u103a\u1016\u102d\u102f\u1038 <strong>1 \u1001\u102f<\/strong> \u101b\u103e\u102d\u101e\u100a\u103a\u104b<\/span><\/li>\n<\/ul>\n<h3> <span style=\"color: #000000;\"><strong>\u1011\u1015\u103a\u101c\u1031\u102c\u1004\u103a\u1038\u1021\u101b\u1004\u103a\u1038\u1021\u1019\u103c\u1005\u103a\u1019\u103b\u102c\u1038<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\u1021\u1031\u102c\u1000\u103a\u1016\u1031\u102c\u103a\u1015\u103c\u1015\u102b \u101e\u1004\u103a\u1001\u1014\u103a\u1038\u1005\u102c\u1019\u103b\u102c\u1038\u101e\u100a\u103a R \u1010\u103d\u1004\u103a \u1015\u103b\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1014\u1031\u101e\u1031\u102c \u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1000\u102d\u102f\u1004\u103a\u1010\u103d\u101a\u103a\u101b\u1014\u103a \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u1037\u103a \u1021\u1001\u103c\u102c\u1038\u101e\u1031\u102c \u1021\u101e\u102f\u1036\u1038\u101d\u1004\u103a\u101e\u1031\u102c \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u101b\u103e\u1004\u103a\u1038\u1015\u103c\u1011\u102c\u1038\u101e\u100a\u103a\u104b<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/my\/r-\u1010\u103d\u1004\u103a-na-\u1001\u103b\u1014\u103a\u101c\u103e\u1015\u103a\u1011\u102c\u1038\u101e\u100a\u103a\u104b\/\" target=\"_blank\" rel=\"noopener\">R \u1010\u103d\u1004\u103a na.omit \u1000\u102d\u102f\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u100a\u103a\u1038<\/a><br \/> <a href=\"https:\/\/statorials.org\/my\/na-rm\/\" target=\"_blank\" rel=\"noopener\">R \u1010\u103d\u1004\u103a na.rm \u1000\u102d\u102f\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u100a\u103a\u1038<\/a><br \/> <a href=\"https:\/\/statorials.org\/my\/r-\u101e\u100a\u103a-\u101e\u102f\u100a\u1016\u103c\u1005\u103a\u101e\u100a\u103a\u104b\/\">R \u1010\u103d\u1004\u103a is.null \u1000\u102d\u102f\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u100a\u103a\u1038<\/a><br \/> <a href=\"https:\/\/statorials.org\/my\/r-\u1010\u103d\u1004\u103a-\u1015\u103b\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1014\u1031\u101e\u1031\u102c\u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1000\u102d\u102f-\u1006\u1014\u1037\u103a\u1000\u103b\u1004\u103a\u101e\u100a\u103a\u104b\/\" target=\"_blank\" rel=\"noopener\">R \u1010\u103d\u1004\u103a \u1015\u103b\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1014\u1031\u101e\u1031\u102c\u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1021\u102c\u1038\u101c\u102f\u1036\u1038\u1000\u102d\u102f \u1019\u100a\u103a\u101e\u102d\u102f\u1037\u1021\u1015\u103c\u1005\u103a\u1010\u1004\u103a\u1019\u100a\u103a\u1014\u100a\u103a\u1038\u104b<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vector \u1019\u103b\u102c\u1038\u1014\u103e\u1004\u1037\u103a \u1012\u1031\u1010\u102c\u1018\u1031\u102c\u1004\u103a\u1019\u103b\u102c\u1038\u1010\u103d\u1004\u103a \u1015\u103b\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1014\u1031\u101e\u1031\u102c\u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1005\u1005\u103a\u1006\u1031\u1038\u101b\u1014\u103a R \u101b\u103e\u102d is.na() \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1000\u102d\u102f \u101e\u1004\u103a\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u101e\u100a\u103a\u104b #check if each individual value is NA is. na (x) #count total NA values sum( is.na (x)) #identify positions of NA values which(is. na (x)) \u1021\u1031\u102c\u1000\u103a\u1016\u1031\u102c\u103a\u1015\u103c\u1015\u102b \u1025\u1015\u1019\u102c\u1019\u103b\u102c\u1038\u101e\u100a\u103a \u1024\u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1000\u102d\u102f \u101c\u1000\u103a\u1010\u103d\u1031\u1037\u1021\u101e\u102f\u1036\u1038\u1001\u103b\u1014\u100a\u103a\u1038\u1000\u102d\u102f \u1015\u103c\u101e\u1011\u102c\u1038\u101e\u100a\u103a\u104b \u1025\u1015\u1019\u102c 1- vector \u1019\u103b\u102c\u1038\u1014\u103e\u1004\u1037\u103a\u1021\u1010\u1030 is.na() \u1000\u102d\u102f\u101e\u102f\u1036\u1038\u1015\u102b\u104b \u1021\u1031\u102c\u1000\u103a\u1015\u102b\u1000\u102f\u1012\u103a\u101e\u100a\u103a vector \u1010\u1005\u103a\u1001\u102f\u1010\u103d\u1004\u103a \u1015\u103b\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1014\u1031\u101e\u1031\u102c \u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1005\u1005\u103a\u1006\u1031\u1038\u101b\u1014\u103a is.na() \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u100a\u103a\u1038\u1000\u102d\u102f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>R \u1010\u103d\u1004\u103a is.na \u1000\u102d\u102f\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u100a\u103a\u1038 (\u1025\u1015\u1019\u102c\u1019\u103b\u102c\u1038\u1014\u103e\u1004\u1037\u103a\u1021\u1010\u1030) \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"\u1024\u101e\u1004\u103a\u1001\u1014\u103a\u1038\u1005\u102c\u1010\u103d\u1004\u103a R \u1010\u103d\u1004\u103a is.na() \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1015\u102f\u1036\u1000\u102d\u102f \u1025\u1015\u1019\u102c\u1019\u103b\u102c\u1038\u1005\u103d\u102c\u1016\u103c\u1004\u1037\u103a \u101b\u103e\u1004\u103a\u1038\u1015\u103c\u1011\u102c\u1038\u101e\u100a\u103a\u104b\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/my\/na\/\" \/>\n<meta property=\"og:locale\" content=\"my_MM\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R 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