{"id":1501,"date":"2023-07-26T03:17:13","date_gmt":"2023-07-26T03:17:13","guid":{"rendered":"https:\/\/statorials.org\/pt\/suavizacao-inferior-r\/"},"modified":"2023-07-26T03:17:13","modified_gmt":"2023-07-26T03:17:13","slug":"suavizacao-inferior-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/suavizacao-inferior-r\/","title":{"rendered":"Como realizar suaviza\u00e7\u00e3o fraca em r (passo a passo)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Nas estat\u00edsticas, o termo <strong>lowess<\/strong> refere-se \u00e0 &#8220;suaviza\u00e7\u00e3o de nuvens de pontos ponderadas localmente&#8221; \u2013 o processo de produ\u00e7\u00e3o de uma curva suave que corresponde aos pontos de dados em uma nuvem de pontos.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Para realizar suaviza\u00e7\u00e3o lowess em R, podemos usar a fun\u00e7\u00e3o <strong>lowess()<\/strong> , que usa a seguinte sintaxe:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>inferior (x, y, f = 2\/3)<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Ouro:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>x:<\/strong> um vetor num\u00e9rico de valores de x.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>y:<\/strong> um vetor num\u00e9rico de valores de y.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>f:<\/strong> o valor da extens\u00e3o mais suave. Isto fornece a propor\u00e7\u00e3o de pontos no gr\u00e1fico que influencia a suaviza\u00e7\u00e3o em cada valor. Valores mais altos resultam em mais suavidade.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">O exemplo passo a passo a seguir mostra como realizar suaviza\u00e7\u00e3o fraca para um determinado conjunto de dados em R.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Etapa 1: crie os dados<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Primeiro, vamos criar um conjunto de dados falso:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong>df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (x=c(1, 1, 2, 2, 3, 4, 6, 6, 7, 8, 10, 11, 11, 12, 13, 14),<\/strong><\/span>\n<span style=\"color: #000000;\"><strong>y=c(4, 7, 9, 10, 14, 15, 19, 16, 17, 21, 22, 34, 44, 40, 43, 45))<\/strong><\/span><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Etapa 2: plotar os dados<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">A seguir, vamos representar graficamente os valores x e y do conjunto de dados:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>plot(df$x, df$y)<\/strong> <\/pre>\n<h3><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-14910 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/faible1-2.png\" alt=\"\" width=\"442\" height=\"403\" srcset=\"\" sizes=\"auto, \"><\/h3>\n<h3> <span style=\"color: #000000;\"><strong>Etapa 3: desenhe a curva m\u00ednima<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">A seguir, vamos tra\u00e7ar a curva de suaviza\u00e7\u00e3o mais fraca nos pontos do gr\u00e1fico de dispers\u00e3o:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create scatterplot<\/span>\nplot(df$x, df$y)\n\n<span style=\"color: #008080;\">#add lowess smoothing curve to plot<\/span>\nlines(lowess(df$x, df$y), col=' <span style=\"color: #008000;\">red<\/span> ')\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-14911 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/faible2-2.png\" alt=\"Exemplo de suaviza\u00e7\u00e3o Lowess em R\" width=\"440\" height=\"397\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Etapa 4: ajustar o alcance mais suave (opcional)<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Tamb\u00e9m podemos ajustar o argumento <strong>f<\/strong> na fun\u00e7\u00e3o lowess() para aumentar ou diminuir o valor usado para uma extens\u00e3o mais suave.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Observe que quanto maior o valor fornecido, mais suave ser\u00e1 a curva inferior.<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create scatterplot<\/span>\nplot(df$x, df$y)\n\n<span style=\"color: #008080;\">#add lowess smoothing curves<\/span>\nlines(lowess(df$x, df$y), col=' <span style=\"color: #008000;\">red<\/span> ')\nlines(lowess(df$x, df$y, f=0.3), col=' <span style=\"color: #008000;\">purple<\/span> ')\nlines(lowess(df$x, df$y, f=3), col=' <span style=\"color: #008000;\">steelblue<\/span> ')\n\n<span style=\"color: #008080;\">#add legend to plot\n<\/span>legend(' <span style=\"color: #008000;\">topleft<\/span> ',\n       col = c(' <span style=\"color: #008000;\">red<\/span> ', ' <span style=\"color: #008000;\">purple<\/span> ', ' <span style=\"color: #008000;\">steelblue<\/span> '),\n       lwd = 2,\n       c(' <span style=\"color: #008000;\">Smoother = 1<\/span> ', ' <span style=\"color: #008000;\">Smoother = 0.3<\/span> ', ' <span style=\"color: #008000;\">Smoother = 3<\/span> '))<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-14912 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/faible3-2.png\" alt=\"Curvas de suaviza\u00e7\u00e3o fracas em R\" width=\"437\" height=\"399\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/pt\/como-tracar-multiplas-linhas-de-series-de-dados-em-um-grafico-em-r\/\" target=\"_blank\" rel=\"noopener\">Como tra\u00e7ar m\u00faltiplas linhas em um gr\u00e1fico em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/grafico-de-dispersao-com-linha-de-regressao-r\/\" target=\"_blank\" rel=\"noopener\">Como criar um gr\u00e1fico de dispers\u00e3o com linha de regress\u00e3o em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/regressao-polinomial-r\/\" target=\"_blank\" rel=\"noopener\">Como realizar regress\u00e3o polinomial em R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nas estat\u00edsticas, o termo lowess refere-se \u00e0 &#8220;suaviza\u00e7\u00e3o de nuvens de pontos ponderadas localmente&#8221; \u2013 o processo de produ\u00e7\u00e3o de uma curva suave que corresponde aos pontos de dados em uma nuvem de pontos. Para realizar suaviza\u00e7\u00e3o lowess em R, podemos usar a fun\u00e7\u00e3o lowess() , que usa a seguinte sintaxe: inferior (x, y, f [&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-1501","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 realizar suaviza\u00e7\u00e3o fraca em R (passo a passo)<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como realizar suaviza\u00e7\u00e3o fraca em R, incluindo um exemplo passo a passo.\" \/>\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\/suavizacao-inferior-r\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como realizar suaviza\u00e7\u00e3o fraca em R (passo a passo)\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como realizar suaviza\u00e7\u00e3o fraca em R, incluindo um exemplo passo a passo.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/suavizacao-inferior-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-26T03:17:13+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/faible1-2.png\" \/>\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\/suavizacao-inferior-r\/\",\"url\":\"https:\/\/statorials.org\/pt\/suavizacao-inferior-r\/\",\"name\":\"Como realizar suaviza\u00e7\u00e3o fraca em R (passo a passo)\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-26T03:17:13+00:00\",\"dateModified\":\"2023-07-26T03:17:13+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como realizar suaviza\u00e7\u00e3o fraca em R, incluindo um exemplo passo a passo.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/suavizacao-inferior-r\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/suavizacao-inferior-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/suavizacao-inferior-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como realizar suaviza\u00e7\u00e3o fraca em r (passo a passo)\"}]},{\"@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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