{"id":10496,"date":"2019-11-18T15:04:35","date_gmt":"2019-11-18T13:04:35","guid":{"rendered":"https:\/\/www.datanovia.com\/en\/?p=10496"},"modified":"2019-11-18T15:04:35","modified_gmt":"2019-11-18T13:04:35","slug":"ggplot-titre-des-axes","status":"publish","type":"post","link":"https:\/\/www.datanovia.com\/en\/fr\/blog\/ggplot-titre-des-axes\/","title":{"rendered":"GGPLOT Titre des Axes"},"content":{"rendered":"<div id=\"rdoc\">\n<p>Cet article d\u00e9crit comment modifier <strong>le titre des axes ggplots<\/strong>. Ceci peut \u00eatre fait facilement en utilisant la fonction R <code>labs()<\/code> ou les fonctions <code>xlab()<\/code> et <code>ylab()<\/code>.<\/p>\n<p>Dans ce tutoriel graphique R, vous apprendrez \u00e0:<\/p>\n<ul>\n<li><strong>Supprimer les titres des axes x et y<\/strong> pour cr\u00e9er un graphique sans \u00e9tiquettes d\u2019axe. Par exemple, pour masquer le titre de l\u2019axe des x, utilisez ce code R: <code>p + theme(axis.title.x = element_blank())<\/code>.<\/li>\n<li><strong>Modifier le style de police des titres des axes<\/strong> (<em>taille<\/em>, <em>couleur<\/em> et <em>style<\/em>).<\/li>\n<\/ul>\n<p>Sommaire:<\/p>\n<div id=\"TOC\">\n<ul>\n<li><a href=\"#fonctions-cles-de-ggplot2\">Fonctions cl\u00e9s de ggplot2<\/a><\/li>\n<li><a href=\"#changer-les-etiquettes-des-axes\">Changer les \u00e9tiquettes des axes<\/a><\/li>\n<li><a href=\"#modifier-la-taille-la-couleur-et-le-style-de-letiquette\">Modifier la taille, la couleur et le style de l\u2019\u00e9tiquette<\/a><\/li>\n<li><a href=\"#supprimer-les-etiquettes-des-axes\">Supprimer les \u00e9tiquettes des axes<\/a><\/li>\n<li><a href=\"#conclusion\">Conclusion<\/a><\/li>\n<\/ul>\n<\/div>\n<div class='dt-sc-hr-invisible-medium  '><\/div>\n<div class='dt-sc-ico-content type1'><div class='custom-icon' ><a href='https:\/\/www.datanovia.com\/en\/fr\/produit\/ggplot2-lessentiel-pour-une-visualisation-magnifique-des-donnees-dans-r\/' target='_blank'><span class='fa fa-book'><\/span><\/a><\/div><h4><a href='https:\/\/www.datanovia.com\/en\/fr\/produit\/ggplot2-lessentiel-pour-une-visualisation-magnifique-des-donnees-dans-r\/' target='_blank'> Livre Apparent\u00e9 <\/a><\/h4>GGPLOT2 - L\u2019Essentiel pour une Visualisation Magnifique des Donn\u00e9es dans R<\/div>\n<div class='dt-sc-hr-invisible-medium  '><\/div>\n<div id=\"fonctions-cles-de-ggplot2\" class=\"section level2\">\n<h2>Fonctions cl\u00e9s de ggplot2<\/h2>\n<ul>\n<li>Commencez par cr\u00e9er un box plot en utilisant l\u2019ensemble de donn\u00e9es <code>ToothGrowth<\/code>:<\/li>\n<\/ul>\n<pre class=\"r\"><code>library(ggplot2)\r\np &lt;- ggplot(ToothGrowth, aes(x = factor(dose), y = len)) + \r\n  geom_boxplot()<\/code><\/pre>\n<ul>\n<li>Modifier les \u00e9tiquettes des axes x et y comme suit:<\/li>\n<\/ul>\n<div class=\"block\">\n<ul>\n<li>p + <em>xlab<\/em>(\u201cNouvelle \u00e9tiquette de l\u2019axe X\u201d) : Modifier l\u2019\u00e9tiquette de l\u2019axe X<\/li>\n<li>p + <em>ylab<\/em>(\u201cNouvelle \u00e9tiquette de l\u2019axe Y\u201d) : Modifier l\u2019\u00e9tiquette de l\u2019axe Y<\/li>\n<li>p + <em>labs<\/em>(x = \u201cNouvelle \u00e9tiquette axe X\u201d, y = \u201cNouvelle \u00e9tiquette axe Y\u201d) : Modifier les \u00e9tiquettes des axes x et y<\/li>\n<\/ul>\n<\/div>\n<ul>\n<li>Options cl\u00e9s du th\u00e8me ggplot2 pour changer le style de police des titres d\u2019axes:<\/li>\n<\/ul>\n<pre class=\"r\"><code>theme(\r\n  axis.title = element_text(),         # Modifier les titres des axes x et y\r\n  \r\n  axis.title.x = element_text(),       # Modifier uniquement le titre de l'axe des x\r\n  axis.title.x.top = element_text(),   # Pour l'\u00e9tiquette de l'axe des x sur l'axe du haut\r\n  \r\n  axis.title.y = element_text(),       # Modifier uniquement le titre de l'axe des y\r\n  axis.title.y.right = element_text(), # Pour le titre de l'axe des y sur l'axe \u00e0 droite\r\n)<\/code><\/pre>\n<p>Arguments de la fonction <code>element_text()<\/code> inclut:<\/p>\n<ul>\n<li>color, size, face, family: pour changer la couleur, la taille, la police du texte, le style (\u201cplain\u201d, \u201citalic\u201d, \u201cbold\u201d, \u201cbold.italic\u201d) et la famille.<\/li>\n<li>lineheight : change l\u2019espace entre deux lignes de texte. Nombre entre 0 et 1. Utile pour les titres d\u2019axes multilignes.<\/li>\n<li>hjust et vjust : nombre entre [0, 1], pour le r\u00e9glage horizontal et vertical des titres des axes, respectivement.\n<ul>\n<li><code>hjust = 0.5<\/code>: Centrer le titre des axes.<\/li>\n<li><code>hjust = 1<\/code>: Placer les titres des axes \u00e0 droite<\/li>\n<li><code>hjust = 0<\/code>: Placer les titres des axes \u00e0 gauche<\/li>\n<\/ul>\n<\/li>\n<li>Pour supprimer un titre d\u2019un axe particulier, utilisez <code>element_blank()<\/code> au lieu de <code>element_text()<\/code>, pour l\u2019argument th\u00e8me correspondant.<\/li>\n<\/ul>\n<p>Par exemple, pour supprimer tous les titres des axes, utilisez ceci: <code>p + theme(axis.title = element_blank())<\/code>.<\/p>\n<\/div>\n<div id=\"changer-les-etiquettes-des-axes\" class=\"section level2\">\n<h2>Changer les \u00e9tiquettes des axes<\/h2>\n<pre class=\"r\"><code># Graphique par d\u00e9faut\r\nprint(p)\r\n\r\n# Changer les \u00e9tiquettes des axes\r\np &lt;- p + labs(x = \"Dose (mg)\", y = \"Teeth length\")\r\np<\/code><\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/www.datanovia.com\/en\/wp-content\/uploads\/dn-tutorials\/ggplot2\/figures\/021-ggplot-axis-labels-change-1.png\" width=\"336\" \/><img decoding=\"async\" src=\"https:\/\/www.datanovia.com\/en\/wp-content\/uploads\/dn-tutorials\/ggplot2\/figures\/021-ggplot-axis-labels-change-2.png\" width=\"336\" \/><\/p>\n<\/div>\n<div id=\"modifier-la-taille-la-couleur-et-le-style-de-letiquette\" class=\"section level2\">\n<h2>Modifier la taille, la couleur et le style de l\u2019\u00e9tiquette<\/h2>\n<ul>\n<li>Fonctions cl\u00e9s: <code>theme()<\/code> and <code>element_text()<\/code><\/li>\n<li>Valeurs autoris\u00e9es pour le style de la police de caract\u00e8res des titres des axes : \u201cplain\u201d, \u201citalic\u201d, \u201cbold\u201d and \u201cbold.italic\u201d<\/li>\n<\/ul>\n<pre class=\"r\"><code>p + theme(\r\n  axis.title.x = element_text(color = \"blue\", size = 14, face = \"bold\"),\r\n  axis.title.y = element_text(color = \"#99333333\", size = 14, face = \"bold\")\r\n)<\/code><\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/www.datanovia.com\/en\/wp-content\/uploads\/dn-tutorials\/ggplot2\/figures\/021-ggplot-axis-labels-font-size-color-face-1.png\" width=\"336\" \/><\/p>\n<\/div>\n<div id=\"supprimer-les-etiquettes-des-axes\" class=\"section level2\">\n<h2>Supprimer les \u00e9tiquettes des axes<\/h2>\n<p>Fonction cl\u00e9s : utiliser <code>element_blank()<\/code> pour supprimer les titres des axes.<\/p>\n<pre class=\"r\"><code>p + theme(axis.title.x = element_blank(),\r\n          axis.title.y = element_blank())<\/code><\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/www.datanovia.com\/en\/wp-content\/uploads\/dn-tutorials\/ggplot2\/figures\/021-ggplot-axis-labels-remove-1.png\" width=\"288\" \/><\/p>\n<p>Supprimer tous les titres d\u2019axes en m\u00eame temps:<\/p>\n<pre class=\"r\"><code>p + theme(axis.title = element_blank())<\/code><\/pre>\n<\/div>\n<div id=\"conclusion\" class=\"section level2\">\n<h2>Conclusion<\/h2>\n<p>Modifier les titres des axes ggplot x et y comme suit:<\/p>\n<pre class=\"r\"><code>p + labs(x = \" x labels\", y = \"y labels\")+\r\n  theme(\r\n    axis.title.x = element_text(size = 14, face = \"bold\"),\r\n    axis.title.y = element_text(size = 14, face = \"bold.italic\")\r\n  )<\/code><\/pre>\n<\/div>\n<\/div>\n<p><!--end rdoc--><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cet article d\u00e9crit comment modifier le titre des axes ggplots. Ceci peut \u00eatre fait facilement en utilisant la fonction R labs() ou les fonctions xlab() et ylab(). Dans ce tutoriel [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":10497,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rating_form_position":"","rating_results_position":"","mr_structured_data_type":"","footnotes":""},"categories":[279],"tags":[316],"class_list":["post-10496","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ggplot2-fr","tag-parametres-graphiques-ggplot2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>GGPLOT Titre des Axes: Am\u00e9liorer votre Graphe en 2 Minutes - Datanovia<\/title>\n<meta name=\"description\" content=\"Cet article d\u00e9crit comment changer le titre des axes d&#039;un ggplot. 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