{"id":3052,"date":"2015-07-07T14:55:14","date_gmt":"2015-07-07T13:55:14","guid":{"rendered":"https:\/\/abcdr.guyader.pro\/?p=3052"},"modified":"2018-04-08T00:01:30","modified_gmt":"2018-04-07T23:01:30","slug":"comment-gerer-les-donnees-manquantes-lors-dune-operation-grace-au-parametre-na-rm","status":"publish","type":"post","link":"https:\/\/thinkr.fr\/abcdr\/comment-gerer-les-donnees-manquantes-lors-dune-operation-grace-au-parametre-na-rm\/","title":{"rendered":"Comment g\u00e9rer les donn\u00e9es manquantes lors d\u2019une op\u00e9ration gr\u00e2ce au param\u00e8tre na.rm ?"},"content":{"rendered":"<p>Les donn\u00e9es manquantes emp\u00eachent R de r\u00e9aliser des op\u00e9rations comme la moyenne ou la somme appliqu\u00e9e \u00e0 un vecteur par exemple. Pour que le logiciel puisse les r\u00e9aliser il est n\u00e9cessaire d\u2019ajouter le param\u00e8tre na.rm afin que les donn\u00e9es manquantes soient prises en compte en tant que telles.<\/p>\n<pre><code><br \/><br \/>x&lt;-c(1,NA,4.3,8,NA,9.5,3.1) \u00a0 \u00a0 \u00a0# x est un vecteur contenant des donn\u00e9es manquantes\n\nsum(x) \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0# Renvoie \"NA\", la fonction sum() ne prend pas en compte les donn\u00e9es manquantes\n\nsum(x, na.rm=TRUE) \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0# Renvoie la somme. Le param\u00e8tre \"na.rm\" permet de s'affranchir des \"NA\"\n\n\u00a0\n\nmean(x) \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 # Renvoie \"NA\"\n\nmean(x, na.rm=TRUE) \u00a0 \u00a0 # Renvoie la moyenne\n\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Les donn\u00e9es manquantes emp\u00eachent R de r\u00e9aliser des op\u00e9rations comme la moyenne ou la somme appliqu\u00e9e \u00e0 un vecteur par exemple. Pour que le logiciel puisse les r\u00e9aliser il est n\u00e9cessaire d\u2019ajouter le param\u00e8tre na.rm afin que les donn\u00e9es manquantes soient prises en compte en tant que telles. x&lt;-c(1,NA,4.3,8,NA,9.5,3.1) \u00a0 \u00a0 \u00a0# x est un vecteur contenant des donn\u00e9es manquantes sum(x) \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0# Renvoie \u00ab\u00a0NA\u00a0\u00bb, la fonction sum() ne prend pas en compte les donn\u00e9es manquantes sum(x, na.rm=TRUE) \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0# Renvoie la somme. Le param\u00e8tre \u00ab\u00a0na.rm\u00a0\u00bb<a class=\"more-link\" href=\"https:\/\/thinkr.fr\/abcdr\/comment-gerer-les-donnees-manquantes-lors-dune-operation-grace-au-parametre-na-rm\/\">Read More &rarr;<\/a><\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"initial","rop_publish_now_accounts":{"twitter_399453572_399453572":""},"rop_publish_now_history":[],"rop_publish_now_status":"pending","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[8,12],"tags":[],"class_list":{"0":"entry","1":"post","2":"publish","3":"author-helene","4":"post-3052","6":"format-standard","7":"category-fonctions-utiles","8":"category-manipulation-de-donnees"},"acf":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p9O7Sx-Ne","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/posts\/3052","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/comments?post=3052"}],"version-history":[{"count":2,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/posts\/3052\/revisions"}],"predecessor-version":[{"id":4255,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/posts\/3052\/revisions\/4255"}],"wp:attachment":[{"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/media?parent=3052"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/categories?post=3052"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/tags?post=3052"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}