{"id":3213,"date":"2023-07-18T15:53:37","date_gmt":"2023-07-18T15:53:37","guid":{"rendered":"https:\/\/statorials.org\/pt\/tracar-a-equacao-em-r\/"},"modified":"2023-07-18T15:53:37","modified_gmt":"2023-07-18T15:53:37","slug":"tracar-a-equacao-em-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/tracar-a-equacao-em-r\/","title":{"rendered":"Como desenhar uma equa\u00e7\u00e3o em r (com exemplos)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar a seguinte sintaxe b\u00e1sica para tra\u00e7ar uma equa\u00e7\u00e3o ou fun\u00e7\u00e3o em R:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>M\u00e9todo 1: Use Base R<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>curve(2*x^2+5, from= <span style=\"color: #008000;\">1<\/span> , to= <span style=\"color: #008000;\">50<\/span> , , xlab=\" <span style=\"color: #ff0000;\">x<\/span> \", ylab=\" <span style=\"color: #ff0000;\">y<\/span> \")\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>M\u00e9todo 2: use ggplot2<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\"><span style=\"color: #107d3f;\">library<\/span><\/span> (ggplot2)\n\n<span style=\"color: #008080;\">#define equation<\/span>\nmy_equation &lt;- function(x){2*x^2+5}\n\n<span style=\"color: #008080;\">#plot equation<\/span>\nggplot( <span style=\"color: #3366ff;\">data.frame<\/span> (x=c( <span style=\"color: #008000;\">1,50<\/span> )), <span style=\"color: #008000;\">aes<\/span> (x=x)) + \n  stat_function(fun=my_equation)\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Esses dois exemplos espec\u00edficos tra\u00e7am a equa\u00e7\u00e3o <strong>y = 2x <sup>2<\/sup> + 5<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Os exemplos a seguir mostram como usar cada m\u00e9todo na pr\u00e1tica.<\/span><\/p>\n<h2> <strong><span style=\"color: #000000;\">Exemplo 1:<\/span> <span style=\"color: #000000;\">tra\u00e7ando a equa\u00e7\u00e3o na base R<\/span><\/strong><\/h2>\n<p> <span style=\"color: #000000;\">Suponha que voc\u00ea queira tra\u00e7ar a seguinte equa\u00e7\u00e3o:<\/span><\/p>\n<blockquote>\n<p> <span style=\"color: #000000;\"><strong>y = <sup>2\u00d72<\/sup> + 5<\/strong><\/span><\/p>\n<\/blockquote>\n<p> <span style=\"color: #000000;\">Voc\u00ea pode usar a seguinte sintaxe R base para fazer isso:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>curve(2*x^2+5, from= <span style=\"color: #008000;\">1<\/span> , to= <span style=\"color: #008000;\">50<\/span> , , xlab=\" <span style=\"color: #ff0000;\">x<\/span> \", ylab=\" <span style=\"color: #ff0000;\">y<\/span> \")<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Isso produz o seguinte gr\u00e1fico:<\/span><\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-27287\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/ploteq1.jpg\" alt=\"tra\u00e7ar a equa\u00e7\u00e3o em R\" width=\"481\" height=\"440\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Se voc\u00ea quiser plotar pontos, simplesmente especifique type=\u201dp\u201d na fun\u00e7\u00e3o <strong>Curve()<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>curve(2*x^2+5, from= <span style=\"color: #008000;\">1<\/span> , to= <span style=\"color: #008000;\">50<\/span> , , xlab=\" <span style=\"color: #ff0000;\">x<\/span> \", ylab=\" <span style=\"color: #ff0000;\">y<\/span> \", type=\" <span style=\"color: #ff0000;\">p<\/span> \")<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Isso produz o seguinte gr\u00e1fico:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-27288 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/ploteq2.jpg\" alt=\"\" width=\"489\" height=\"444\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h2> <strong><span style=\"color: #000000;\">Exemplo 2:<\/span> <span style=\"color: #000000;\">Trace a equa\u00e7\u00e3o em ggplot2<\/span><\/strong><\/h2>\n<p> <span style=\"color: #000000;\">Suponha que voc\u00ea queira tra\u00e7ar a seguinte equa\u00e7\u00e3o:<\/span><\/p>\n<blockquote>\n<p> <span style=\"color: #000000;\"><strong>y = <sup>2\u00d72<\/sup> + 5<\/strong><\/span><\/p>\n<\/blockquote>\n<p> <span style=\"color: #000000;\">Voc\u00ea pode usar a seguinte sintaxe no <a href=\"https:\/\/ggplot2.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">ggplot2<\/a> para fazer isso:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\"><span style=\"color: #107d3f;\">library<\/span><\/span> (ggplot2)\n\n<span style=\"color: #008080;\">#define equation<\/span>\nmy_equation &lt;- function(x){2*x^2+5}\n\n<span style=\"color: #008080;\">#plot equation<\/span>\nggplot( <span style=\"color: #3366ff;\">data.frame<\/span> (x=c( <span style=\"color: #008000;\">1,50<\/span> )), <span style=\"color: #008000;\">aes<\/span> (x=x)) + \n  stat_function(fun=my_equation)<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Isso produz o seguinte gr\u00e1fico:<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-27289 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/ploteq3.jpg\" alt=\"\" width=\"481\" height=\"477\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Observe que este gr\u00e1fico corresponde ao que criamos no exemplo anterior na base R.<\/span><\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Nota<\/strong> : Para tra\u00e7ar uma equa\u00e7\u00e3o diferente, basta alterar os valores definidos para a vari\u00e1vel <strong>minha_equa\u00e7\u00e3o<\/strong> .<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Os tutoriais a seguir explicam como realizar outras tarefas comuns em R:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\" target=\"_blank\" rel=\"noopener\">Como adicionar uma equa\u00e7\u00e3o de regress\u00e3o a um gr\u00e1fico em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/grafico-de-interacao-r\/\" target=\"_blank\" rel=\"noopener\">Como criar um gr\u00e1fico de intera\u00e7\u00e3o em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/traco-residual-r\/\" target=\"_blank\" rel=\"noopener\">Como criar um gr\u00e1fico residual em R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar a seguinte sintaxe b\u00e1sica para tra\u00e7ar uma equa\u00e7\u00e3o ou fun\u00e7\u00e3o em R: M\u00e9todo 1: Use Base R curve(2*x^2+5, from= 1 , to= 50 , , xlab=&#8221; x &#8220;, ylab=&#8221; y &#8220;) M\u00e9todo 2: use ggplot2 library (ggplot2) #define equation my_equation &lt;- function(x){2*x^2+5} #plot equation ggplot( data.frame (x=c( 1,50 )), aes (x=x)) + [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-3213","post","type-post","status-publish","format-standard","hentry","category-guia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Como tra\u00e7ar uma equa\u00e7\u00e3o em R (com exemplos) - Estatologia<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como representar graficamente uma equa\u00e7\u00e3o em R, com v\u00e1rios exemplos.\" \/>\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\/pt\/tracar-a-equacao-em-r\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como tra\u00e7ar uma equa\u00e7\u00e3o em R (com exemplos) - Estatologia\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como representar graficamente uma equa\u00e7\u00e3o em R, com v\u00e1rios exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/tracar-a-equacao-em-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-18T15:53:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/ploteq1.jpg\" \/>\n<meta name=\"author\" content=\"Dr. benjamim anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr. benjamim anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pt\/tracar-a-equacao-em-r\/\",\"url\":\"https:\/\/statorials.org\/pt\/tracar-a-equacao-em-r\/\",\"name\":\"Como tra\u00e7ar uma equa\u00e7\u00e3o em R (com exemplos) - Estatologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-18T15:53:37+00:00\",\"dateModified\":\"2023-07-18T15:53:37+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como representar graficamente uma equa\u00e7\u00e3o em R, com v\u00e1rios exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/tracar-a-equacao-em-r\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/tracar-a-equacao-em-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/tracar-a-equacao-em-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como desenhar uma equa\u00e7\u00e3o em r (com exemplos)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/pt\/#website\",\"url\":\"https:\/\/statorials.org\/pt\/\",\"name\":\"Statorials\",\"description\":\"O seu guia para a literacia estat\u00edstica!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/pt\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pt-PT\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\",\"name\":\"Dr. benjamim anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-PT\",\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/pt\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/pt\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Dr. benjamim anderson\"},\"description\":\"Ol\u00e1, sou Benjamin, um professor aposentado de estat\u00edstica que se tornou professor dedicado na Statorials. 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