{"id":993,"date":"2023-07-28T01:41:43","date_gmt":"2023-07-28T01:41:43","guid":{"rendered":"https:\/\/statorials.org\/pt\/grafico-de-log-matplotlib\/"},"modified":"2023-07-28T01:41:43","modified_gmt":"2023-07-28T01:41:43","slug":"grafico-de-log-matplotlib","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/grafico-de-log-matplotlib\/","title":{"rendered":"Como criar gr\u00e1ficos matplotlib com escalas logar\u00edtmicas"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Freq\u00fcentemente, voc\u00ea pode querer criar gr\u00e1ficos Matplotlib com <strong>escalas logar\u00edtmicas<\/strong> para um ou mais eixos. Felizmente, o Matplotlib oferece as tr\u00eas fun\u00e7\u00f5es a seguir para fazer isso:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><a href=\"https:\/\/matplotlib.org\/3.1.1\/api\/_as_gen\/matplotlib.pyplot.semilogx.html\" target=\"_blank\" rel=\"noopener noreferrer\">Matplotlib.pyplot.semilogx()<\/a> \u2013 Crie um gr\u00e1fico com escala logar\u00edtmica no eixo x.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><a href=\"https:\/\/matplotlib.org\/3.1.1\/api\/_as_gen\/matplotlib.pyplot.semilogy.html\" target=\"_blank\" rel=\"noopener noreferrer\">Matplotlib.pyplot.semilogy()<\/a> \u2013 Crie um gr\u00e1fico com escala logar\u00edtmica no eixo y.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><a href=\"https:\/\/matplotlib.org\/3.3.1\/api\/_as_gen\/matplotlib.pyplot.loglog.html\" target=\"_blank\" rel=\"noopener noreferrer\">Matplotlib.pyplot.loglog()<\/a> \u2013 Crie um gr\u00e1fico com escala logar\u00edtmica em ambos os eixos.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Este tutorial explica como usar cada uma dessas fun\u00e7\u00f5es na pr\u00e1tica.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 1: Escala logar\u00edtmica para o eixo X<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Suponha que criemos um gr\u00e1fico de linhas para os seguintes dados:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #107d3f;\">import<\/span> matplotlib.pyplot <span style=\"color: #107d3f;\">as<\/span> plt\n\n<span style=\"color: #008080;\">#create data\n<span style=\"color: #000000;\">x = [1, 8, 190, 1400, 6500]<\/span><\/span><span style=\"color: #000000;\">\ny = [1, 2, 3, 4, 5]<\/span>\n\n<span style=\"color: #008080;\">#create line chart of data<\/span>\nplt. <span style=\"color: #3366ff;\">plot<\/span> (x,y)\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-10317 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/echelle-log3.png\" alt=\"\" width=\"418\" height=\"277\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Podemos usar a fun\u00e7\u00e3o <strong>.semilogx()<\/strong> para converter o eixo x em uma escala logar\u00edtmica:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>plt. <span style=\"color: #3366ff;\">semilogx<\/span> ()<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-10318 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/echelle-log4.png\" alt=\"Gr\u00e1fico Matplotlib com escala logar\u00edtmica no eixo x\" width=\"424\" height=\"280\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Observe que o eixo y \u00e9 exatamente o mesmo, mas o eixo x est\u00e1 agora em escala logar\u00edtmica.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 2: Escala logar\u00edtmica para o eixo Y<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Suponha que criemos um gr\u00e1fico de linhas para os seguintes dados:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #107d3f;\">import<\/span> matplotlib.pyplot <span style=\"color: #107d3f;\">as<\/span> plt\n\n<span style=\"color: #008080;\">#create data<\/span>\nx = [1, 2, 3, 4, 5]\ny = [1, 8, 190, 1400, 6500]\n\n<span style=\"color: #008080;\">#create line chart of data<\/span>\nplt. <span style=\"color: #3366ff;\">plot<\/span> (x,y)\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-10315 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/echelle-log1.png\" alt=\"\" width=\"419\" height=\"275\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Podemos usar a fun\u00e7\u00e3o <strong>.semilogy()<\/strong> para converter o eixo y em uma escala logar\u00edtmica:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>plt. <span style=\"color: #3366ff;\">semilogy<\/span> ()<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-10316 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/echelle-log2.png\" alt=\"Matplotlib com escala logar\u00edtmica no eixo y\" width=\"420\" height=\"284\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Observe que o eixo x \u00e9 exatamente o mesmo, mas o eixo y est\u00e1 agora em escala logar\u00edtmica.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 3: Escala logar\u00edtmica para ambos os eixos<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Suponha que criemos um gr\u00e1fico de linhas para os seguintes dados:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #107d3f;\">import<\/span> matplotlib.pyplot <span style=\"color: #107d3f;\">as<\/span> plt\n\n<span style=\"color: #008080;\">#createdata<\/span>\nx = [10, 200, 3000, 40000, 500000]\ny = [30, 400, 5000, 60000, 750000]\n\n<span style=\"color: #008080;\">#create line chart of data<\/span>\nplt. <span style=\"color: #3366ff;\">plot<\/span> (x,y)\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-10319 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/echelle-log5.png\" alt=\"\" width=\"427\" height=\"270\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Podemos usar a fun\u00e7\u00e3o <strong>.loglog()<\/strong> para converter o eixo y em uma escala logar\u00edtmica:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>plt. <span style=\"color: #3366ff;\">loglog<\/span> (x,y)<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-10320 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/echelle-log6.png\" alt=\"Plotador de log em Matplotlib\" width=\"416\" height=\"274\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Observe que ambos os eixos est\u00e3o agora em escala logar\u00edtmica.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/pt\/alterar-o-tamanho-da-fonte-matplotlib\/\" target=\"_blank\" rel=\"noopener noreferrer\">Como alterar o tamanho da fonte em um gr\u00e1fico Matplotlib<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/matplotlib-remove-carrapatos\/\" target=\"_blank\" rel=\"noopener noreferrer\">Como remover carrapatos de gr\u00e1ficos Matplotlib<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Freq\u00fcentemente, voc\u00ea pode querer criar gr\u00e1ficos Matplotlib com escalas logar\u00edtmicas para um ou mais eixos. Felizmente, o Matplotlib oferece as tr\u00eas fun\u00e7\u00f5es a seguir para fazer isso: Matplotlib.pyplot.semilogx() \u2013 Crie um gr\u00e1fico com escala logar\u00edtmica no eixo x. Matplotlib.pyplot.semilogy() \u2013 Crie um gr\u00e1fico com escala logar\u00edtmica no eixo y. Matplotlib.pyplot.loglog() \u2013 Crie um gr\u00e1fico com [&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-993","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 criar gr\u00e1ficos Matplotlib com escalas logar\u00edtmicas - Statorials<\/title>\n<meta name=\"description\" content=\"Uma explica\u00e7\u00e3o simples sobre como criar gr\u00e1ficos Matplotlib com escalas logar\u00edtmicas.\" \/>\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\/grafico-de-log-matplotlib\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como criar gr\u00e1ficos Matplotlib com escalas logar\u00edtmicas - Statorials\" \/>\n<meta property=\"og:description\" content=\"Uma explica\u00e7\u00e3o simples sobre como criar gr\u00e1ficos Matplotlib com escalas logar\u00edtmicas.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/grafico-de-log-matplotlib\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-28T01:41:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/echelle-log3.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\/grafico-de-log-matplotlib\/\",\"url\":\"https:\/\/statorials.org\/pt\/grafico-de-log-matplotlib\/\",\"name\":\"Como criar gr\u00e1ficos Matplotlib com escalas logar\u00edtmicas - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-28T01:41:43+00:00\",\"dateModified\":\"2023-07-28T01:41:43+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Uma explica\u00e7\u00e3o simples sobre como criar gr\u00e1ficos Matplotlib com escalas logar\u00edtmicas.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/grafico-de-log-matplotlib\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/grafico-de-log-matplotlib\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/grafico-de-log-matplotlib\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como criar gr\u00e1ficos matplotlib com escalas logar\u00edtmicas\"}]},{\"@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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