{"id":3000,"date":"2021-01-25T21:04:06","date_gmt":"2021-01-25T20:04:06","guid":{"rendered":"http:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/les-graphiques-avec-r\/courbe-dune-fonction-avec-r\/"},"modified":"2023-10-14T20:14:24","modified_gmt":"2023-10-14T18:14:24","slug":"courbe-dune-fonction-avec-r","status":"publish","type":"page","link":"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/les-graphiques-avec-r\/courbe-dune-fonction-avec-r\/","title":{"rendered":"Courbe d&rsquo;une fonction avec R"},"content":{"rendered":"\n<p>Voici un exemple de cr\u00e9ation et de sauvegarde dans un fichier png de la courbe repr\u00e9sentative d&rsquo;une fonction.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"r\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">library(latex2exp)\n\n#############################################\n# debut  image\n#\npng( \"image.png\", width = 640, height = 400 )\n\na=-2\nb=5\n\nf = function(x) {\n\treturn(x^2)\n}\n\nx = a+ c(0:100)\/100*(b-a) ; \ny = f(x)\n\nplot(x, y,\n     xlim=c(a,b),\n     axes=FALSE,\n     panel.first = grid(),\n     xlab=TeX(\"Courbe de f(x)=x^2\"),\n     ylab=NA,\n     type=\"l\",\n     lwd=2,\n     col=\"red\")\n\naxis(1,pos=0)\naxis(2,pos=0,las=2) \n\npoints(2,50,pch=4)\nxnom = 3\ntext(xnom,f(xnom),TeX(\"$(C_f)$\"),pos=1,cex=1.5,col=\"red\",offset=1.5)\ndev.off()\n#\n#fin  image\n#############################################<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Voici un exemple de cr\u00e9ation et de sauvegarde dans un fichier png de la courbe repr\u00e9sentative d&rsquo;une fonction.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2078,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3000","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Courbe d&#039;une fonction avec R - Maths &amp; Num\u00e9rique<\/title>\n<meta name=\"description\" content=\"r maths lyc\u00e9e courbe fonction\" \/>\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\/les-graphiques-avec-r\/courbe-dune-fonction-avec-r\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Courbe d&#039;une fonction avec R - Maths &amp; Num\u00e9rique\" \/>\n<meta property=\"og:description\" content=\"r maths lyc\u00e9e courbe fonction\" \/>\n<meta property=\"og:url\" content=\"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/les-graphiques-avec-r\/courbe-dune-fonction-avec-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Maths &amp; Num\u00e9rique\" \/>\n<meta property=\"article:modified_time\" content=\"2023-10-14T18:14:24+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=\"1 minute\" \/>\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\/les-graphiques-avec-r\/courbe-dune-fonction-avec-r\/\",\"url\":\"https:\/\/wordpress.callac.online\/index.php\/logiciels-mathematiques\/le-logiciel-r\/les-graphiques-avec-r\/courbe-dune-fonction-avec-r\/\",\"name\":\"Courbe d'une fonction avec R - Maths &amp; 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