satis<\/em> .<\/p>\nDans ces donn\u00e9es comme souvent, les observations sont en lignes et les variables en colonnes.<\/p>\n
S\u00e9lection de variables<\/h2>\n
Pour obtenir tous les noms de variables :<\/p>\n
names(satis)<\/code><\/p>\n
\n[1] \"service\" \"sexe\" \"age\" \"profession\"
\n[5] \"amelioration.sante\" \"amelioration.moral\" \"recommander\" \"score.relation\"
\n[9] \"score.information\"
\n<\/code><\/p>\nPour afficher une variable, par exemple, les \u00e2ges :<\/p>\n
satis$age<\/code><\/p>\n
\n[1] 41 29 83 66 84 84 60 85 28 35 84 78 35 34 49 30 64 62 89 48 57 76 56 27 68 54 65 25 61 58
\n[31] 67 62 37 83 52 69 58 75 59 40 50 83 34 75 69 39 69 58 53 78 82 81 81 66 36 60 45 78 54 84
\n[61] 59 53 62 46 60 63 67 77 68 52 72 64 67 51 36 78 79 54 69 49 67 65 64 65 72 62 83 49 75 52
\n[91] 58 50 27 64 45 54 45 80 81 59 64 42 42 41 81 23 79 54 61 39 53 51 32 59 63 69 52 18 64 47
\n[121] 46 39 43 40 64 44 45 86 49 42 71 32 56 49 31 66 67 70 62 72 55 28 62 48 43 70 80 61 56 80
\n[151] 21 75 40 53 80 58 51 79 72 40 29 40 32 63 80 29 84 70 87 43 81 28 76 82 67 64 84 95 55 78
\n[181] 45 40 90 50 85 77 30 97 27 36 61 91 65 63 74 89 77 73 30 36 47 41 34 18 43 66 55 26 32 63
\n[211] NA 39 43 75 46 42 60 84 69 19 74 23 52 23 61 27 69 51 65 38 69 70 68 60 29 35 57 88 45 18
\n[241] 32 44 59 NA NA NA 66 45 60 88 47 43 46 39 67 75 79 20 43 63 63 40 62 63 57 26 NA 38 45 34
\n[271] 44 65 96 NA 43 75 38 44 53 38 48 70 65 49 47 71 76 66 69 60 64 59 29 33 68 64 90 66 72 84
\n[301] 75 78 55 92 55 53 48 55 74 60 41 75 70 57 88 50 50 25 22 80 70 72 68 54 58 52 41 79 57 26
\n[331] 59 45 83 47 74 69 67 36 76 83 87 76 84 57 67 75 82 84 22 60 55 40 48 83 55 58 65 91 85 67
\n[361] 75 46 74 69 60 55 72 70 43 49 92 64 74 75 64 77 82 75 60 64 61 50 42 65 75 90 57 42 66 60
\n[391] 73 51 85 88 82 50 82 31 39 49 54 32 76 40 60 55 52 52 35 42 40 78 77 49 56 58 39 82 37 81
\n[421] 55 59 77 68 45 67 51 70 83 72 75 43 29 67 40 37 50 40 67 66 79 65 44 88 56 47 58 75 85 75
\n[451] 46 49 61 69 38 48 84 60 76 60 80 84 50 45 47 73 75 43 49 56 50 46 63 87 73 63 33 32 21 71
\n[481] 72 53 30 63 26 91 54 55 78 30 45 44 61 64 44 55 48 57 65 77 72 36 59 19 66 20 21 26 32 68
\n[511] 57 70 55 39 71 62 22 58 56 70 59 78 77 66 58 31 69 67 70 81 69 30 30 50
\n<\/code><\/p>\nPour n’afficher que les premiers termes, ici les 10 premiers (par d\u00e9faut 6) :<\/p>\n
head(satis$age,10)<\/code><\/p>\n
\n[1] 41 29 83 66 84 84 60 85 28 35
\n<\/code><\/p>\nS\u00e9lection d’observations<\/h2>\n
Pour afficher une observation, par exemple, la 43 :<\/p>\n
satis[43,]<\/code><\/p>\n
\nservice sexe age profession amelioration.sante amelioration.moral recommander
\n43 4 0 34 3 2 0 0
\nscore.relation score.information
\n43 24 22
\n<\/code><\/p>\nPour afficher une liste d’observation, par exemple, les num\u00e9ros 10,25 et 43 :<\/p>\n
satis[c(10,25,43),]<\/code><\/p>\n
\nservice sexe age profession amelioration.sante amelioration.moral recommander
\n10 3 1 35 3 3 2 NA
\n25 4 0 68 5 3 2 2
\n43 4 0 34 3 2 0 0
\nscore.relation score.information
\n10 NA NA
\n25 39 40
\n43 24 22
\n<\/code><\/p>\nPour afficher une liste d’observation, par exemple, de 25 \u00e0 43 :<\/p>\n
satis[25:43,]<\/code><\/p>\n
\nservice sexe age profession amelioration.sante amelioration.moral recommander
\n25 4 0 68 5 3 2 2
\n26 4 0 54 3 3 3 2
\n27 4 0 65 3 2 0 0
\n28 4 0 25 7 3 3 2
\n29 4 0 61 3 3 1 2
\n30 4 1 58 2 3 3 2
\n31 4 0 67 4 3 1 2
\n32 4 0 62 3 NA 2 1
\n33 4 0 37 3 3 1 2
\n34 4 0 83 NA NA NA NA
\n35 4 0 52 3 3 3 2
\n36 4 0 69 3 3 1 2
\n37 4 0 58 3 1 1 2
\n38 4 0 75 3 3 3 2
\n39 4 0 59 6 2 1 2
\n40 4 1 40 NA NA NA NA
\n41 4 1 50 NA NA NA NA
\n42 4 0 83 NA NA NA NA
\n43 4 0 34 3 2 0 0
\nscore.relation score.information
\n25 39 40
\n26 39 22
\n27 22 25
\n28 35 36
\n29 38 38
\n30 38 37
\n31 37 31
\n32 33 21
\n33 33 29
\n34 NA NA
\n35 40 37
\n36 39 28
\n37 40 40
\n38 37 39
\n39 34 32
\n40 NA NA
\n41 NA NA
\n42 NA NA
\n43 24 22
\n<\/code><\/p>\nPour afficher une liste d’observation, selon un crit\u00e8re, par exemple, les \u00e2ges non attribu\u00e9s :<\/p>\n
satis[is.na(satis$age),]<\/code><\/p>\n
\nservice sexe age profession amelioration.sante amelioration.moral recommander
\n211 5 0 NA NA NA NA NA
\n244 5 0 NA NA NA NA NA
\n245 5 1 NA NA NA NA NA
\n246 5 0 NA NA NA NA NA
\n267 5 0 NA NA NA NA NA
\n274 5 1 NA NA NA NA NA
\nscore.relation score.information
\n211 NA NA
\n244 NA NA
\n245 NA NA
\n246 NA NA
\n267 NA NA
\n274 NA NA
\n<\/code><\/p>\nPour afficher une liste d’observation, selon un crit\u00e8re, par exemple, les personnes de 19 ans (avec l’\u00e2ge fourni) :<\/p>\n
satis[satis$age==19 & !is.na(satis$age),]<\/code><\/p>\n
\nservice sexe age profession amelioration.sante amelioration.moral recommander
\n220 5 1 19 7 2 2 1
\n504 8 1 19 7 2 1 0
\nscore.relation score.information
\n220 NA NA
\n504 25 20
\n<\/code><\/p>\nL’instruction subset<\/h2>\n
Cette instruction permet de trier dans une donn\u00e9e des variables selon un crit\u00e8re g\u00e9n\u00e9ral.<\/p>\n
Pour s\u00e9lectionner le sexe des personnes de 19 ans :<\/p>\n
subset(satis,satis$age==19,\"sexe\")<\/code><\/p>\n
\nsexe
\n220 1
\n504 1
\n<\/code><\/p>\nPour s\u00e9lectionner le sexe et la profession des personnes de 30 ans :<\/p>\n
subset(satis,satis$age==30,c(sexe,profession))<\/code><\/p>\n
\nsexe profession
\n16 0 NA
\n187 0 4
\n199 0 5
\n483 1 5
\n490 1 5
\n532 1 4
\n533 1 8
\n<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"Un fichier de donn\u00e9es Travaillons sur une enqu\u00eate de satisfactions dans un h\u00f4pital, r\u00e9cup\u00e9r\u00e9 lors d’un cours de FUN (France Unit\u00e9 Num\u00e9rique). Les fichiers sont disponibles ici. Par la suite,…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2074,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-285","page","type-page","status-publish","hentry"],"yoast_head":"\n
S\u00e9lection de donn\u00e9es avec R - Maths & Num\u00e9rique<\/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:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/selection-de-donnees-avec-r\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"S\u00e9lection de donn\u00e9es avec R - Maths & Num\u00e9rique\" \/>\n<meta property=\"og:description\" content=\"Un fichier de donn\u00e9es Travaillons sur une enqu\u00eate de satisfactions dans un h\u00f4pital, r\u00e9cup\u00e9r\u00e9 lors d’un cours de FUN (France Unit\u00e9 Num\u00e9rique). Les fichiers sont disponibles ici. Par la suite,…\" \/>\n<meta property=\"og:url\" content=\"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/selection-de-donnees-avec-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Maths & Num\u00e9rique\" \/>\n<meta property=\"article:modified_time\" content=\"2023-10-14T18:14:17+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/selection-de-donnees-avec-r\/\",\"url\":\"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/selection-de-donnees-avec-r\/\",\"name\":\"S\u00e9lection de donn\u00e9es avec R - Maths & Num\u00e9rique\",\"isPartOf\":{\"@id\":\"https:\/\/wordpress.callac.online\/#website\"},\"datePublished\":\"2014-09-28T17:15:09+00:00\",\"dateModified\":\"2023-10-14T18:14:17+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/selection-de-donnees-avec-r\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/selection-de-donnees-avec-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/selection-de-donnees-avec-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/wordpress.callac.online\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Logiciels math\u00e9matiques\",\"item\":\"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Le logiciel R\",\"item\":\"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"G\u00e9n\u00e9ralit\u00e9s sur R\",\"item\":\"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/\"},{\"@type\":\"ListItem\",\"position\":5,\"name\":\"S\u00e9lection de donn\u00e9es avec R\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/wordpress.callac.online\/#website\",\"url\":\"https:\/\/wordpress.callac.online\/\",\"name\":\"Maths & Num\u00e9rique\",\"description\":\"Des outils pour les enseignants de math\u00e9matiques et de num\u00e9rique\",\"publisher\":{\"@id\":\"https:\/\/wordpress.callac.online\/#\/schema\/person\/04061f1ca2c2c42039142a704be95940\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/wordpress.callac.online\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\/\/wordpress.callac.online\/#\/schema\/person\/04061f1ca2c2c42039142a704be95940\",\"name\":\"dlefur\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/wordpress.callac.online\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/4a9e17be136808c6597f28aa2b6c13126dab066fdc2198ff60090972c9b7fafc?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/4a9e17be136808c6597f28aa2b6c13126dab066fdc2198ff60090972c9b7fafc?s=96&d=mm&r=g\",\"caption\":\"dlefur\"},\"logo\":{\"@id\":\"https:\/\/wordpress.callac.online\/#\/schema\/person\/image\/\"},\"description\":\"Enseignant de math\u00e9matiques Lyc\u00e9e Pasteur S\u00e3o Paulo\",\"sameAs\":[\"http:\/\/wordpress.callac.online\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"S\u00e9lection de donn\u00e9es avec R - Maths & Num\u00e9rique","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:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/selection-de-donnees-avec-r\/","og_locale":"fr_FR","og_type":"article","og_title":"S\u00e9lection de donn\u00e9es avec R - Maths & Num\u00e9rique","og_description":"Un fichier de donn\u00e9es Travaillons sur une enqu\u00eate de satisfactions dans un h\u00f4pital, r\u00e9cup\u00e9r\u00e9 lors d’un cours de FUN (France Unit\u00e9 Num\u00e9rique). Les fichiers sont disponibles ici. Par la suite,…","og_url":"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/selection-de-donnees-avec-r\/","og_site_name":"Maths & Num\u00e9rique","article_modified_time":"2023-10-14T18:14:17+00:00","twitter_card":"summary_large_image","twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/selection-de-donnees-avec-r\/","url":"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/selection-de-donnees-avec-r\/","name":"S\u00e9lection de donn\u00e9es avec R - Maths & Num\u00e9rique","isPartOf":{"@id":"https:\/\/wordpress.callac.online\/#website"},"datePublished":"2014-09-28T17:15:09+00:00","dateModified":"2023-10-14T18:14:17+00:00","breadcrumb":{"@id":"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/selection-de-donnees-avec-r\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/selection-de-donnees-avec-r\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/selection-de-donnees-avec-r\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/wordpress.callac.online\/"},{"@type":"ListItem","position":2,"name":"Logiciels math\u00e9matiques","item":"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/"},{"@type":"ListItem","position":3,"name":"Le logiciel R","item":"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/"},{"@type":"ListItem","position":4,"name":"G\u00e9n\u00e9ralit\u00e9s sur R","item":"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/generalites-sur-r\/"},{"@type":"ListItem","position":5,"name":"S\u00e9lection de donn\u00e9es avec R"}]},{"@type":"WebSite","@id":"https:\/\/wordpress.callac.online\/#website","url":"https:\/\/wordpress.callac.online\/","name":"Maths & Num\u00e9rique","description":"Des outils pour les enseignants de math\u00e9matiques et de num\u00e9rique","publisher":{"@id":"https:\/\/wordpress.callac.online\/#\/schema\/person\/04061f1ca2c2c42039142a704be95940"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/wordpress.callac.online\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":["Person","Organization"],"@id":"https:\/\/wordpress.callac.online\/#\/schema\/person\/04061f1ca2c2c42039142a704be95940","name":"dlefur","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/wordpress.callac.online\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/4a9e17be136808c6597f28aa2b6c13126dab066fdc2198ff60090972c9b7fafc?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/4a9e17be136808c6597f28aa2b6c13126dab066fdc2198ff60090972c9b7fafc?s=96&d=mm&r=g","caption":"dlefur"},"logo":{"@id":"https:\/\/wordpress.callac.online\/#\/schema\/person\/image\/"},"description":"Enseignant de math\u00e9matiques Lyc\u00e9e Pasteur S\u00e3o Paulo","sameAs":["http:\/\/wordpress.callac.online"]}]}},"_links":{"self":[{"href":"https:\/\/wordpress.callac.online\/index.php\/wp-json\/wp\/v2\/pages\/285","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.callac.online\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/wordpress.callac.online\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/wordpress.callac.online\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wordpress.callac.online\/index.php\/wp-json\/wp\/v2\/comments?post=285"}],"version-history":[{"count":3,"href":"https:\/\/wordpress.callac.online\/index.php\/wp-json\/wp\/v2\/pages\/285\/revisions"}],"predecessor-version":[{"id":2375,"href":"https:\/\/wordpress.callac.online\/index.php\/wp-json\/wp\/v2\/pages\/285\/revisions\/2375"}],"up":[{"embeddable":true,"href":"https:\/\/wordpress.callac.online\/index.php\/wp-json\/wp\/v2\/pages\/2074"}],"wp:attachment":[{"href":"https:\/\/wordpress.callac.online\/index.php\/wp-json\/wp\/v2\/media?parent=285"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}