{"id":4009,"date":"2023-07-14T05:03:41","date_gmt":"2023-07-14T05:03:41","guid":{"rendered":"https:\/\/statorials.org\/pt\/escala-logaritmica-marinha\/"},"modified":"2023-07-14T05:03:41","modified_gmt":"2023-07-14T05:03:41","slug":"escala-logaritmica-marinha","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/escala-logaritmica-marinha\/","title":{"rendered":"Como usar uma escala logar\u00edtmica em gr\u00e1ficos seaborn"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar as fun\u00e7\u00f5es <b>plt.xscale()<\/b> e <strong>plt.yscale()<\/strong> para usar uma escala logar\u00edtmica para o eixo xey, respectivamente, em um gr\u00e1fico marinho:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt\n<span style=\"color: #008000;\">import<\/span> seaborn <span style=\"color: #008000;\">as<\/span> sns\n\n<span style=\"color: #008080;\">#create scatterplot with log scale on both axes\n<\/span>sns. <span style=\"color: #3366ff;\">scatterplot<\/span> (data=df, x=' <span style=\"color: #ff0000;\">x<\/span> ', y=' <span style=\"color: #ff0000;\">y<\/span> ')\nplt. <span style=\"color: #3366ff;\">xscale<\/span> ('log')\nplt. <span style=\"color: #3366ff;\">yscale<\/span> ('log')<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">O exemplo a seguir mostra como usar essas fun\u00e7\u00f5es na pr\u00e1tica.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo: Usando escala logar\u00edtmica no gr\u00e1fico Seaborn<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Suponha que temos o seguinte DataFrame do pandas:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd\n\n<span style=\"color: #008080;\">#createDataFrame<\/span>\ndf = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">x<\/span> ': [2, 5, 6, 7, 9, 13, 14, 16, 18],\n                   ' <span style=\"color: #ff0000;\">y<\/span> ': [200, 1700, 2300, 2500, 2800, 2900, 3400, 3900, 11000]})\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span><span style=\"color: #008000;\">print<\/span> (df)\n\n    xy\n0 2 200\n1 5 1700\n2 6 2300\n3 7 2500\n4 9 2800\n5 13 2900\n6 14 3400\n7 16 3900\n8 18 11000<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Podemos usar a fun\u00e7\u00e3o <strong>scatterplot()<\/strong> em seaborn para criar um gr\u00e1fico de dispers\u00e3o que usa uma escala linear no eixo x e no eixo y:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> seaborn <span style=\"color: #008000;\">as<\/span> sns\n\n<span style=\"color: #008080;\">#create scatterplot with default axis scales\n<\/span>sns. <span style=\"color: #3366ff;\">scatterplot<\/span> (data=df, x=' <span style=\"color: #ff0000;\">x<\/span> ', y=' <span style=\"color: #ff0000;\">y<\/span> ')\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-32053 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/journaux1.jpg\" alt=\"\" width=\"554\" height=\"404\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Para usar uma escala logar\u00edtmica apenas para o eixo y, podemos usar a seguinte sintaxe:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt\n<span style=\"color: #008000;\">import<\/span> seaborn <span style=\"color: #008000;\">as<\/span> sns\n\n<span style=\"color: #008080;\">#create scatterplot with log scale on y-axis\n<\/span>sns. <span style=\"color: #3366ff;\">scatterplot<\/span> (data=df, x=' <span style=\"color: #ff0000;\">x<\/span> ', y=' <span style=\"color: #ff0000;\">y<\/span> ')\nplt. <span style=\"color: #3366ff;\">yscale<\/span> ('log')\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-32054\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/journaux2.jpg\" alt=\"escala logar\u00edtmica\" width=\"546\" height=\"414\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Observe que o eixo Y agora usa uma escala logar\u00edtmica.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Tamb\u00e9m podemos usar uma escala logar\u00edtmica no eixo x se quisermos:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt\n<span style=\"color: #008000;\">import<\/span> seaborn <span style=\"color: #008000;\">as<\/span> sns\n\n<span style=\"color: #008080;\">#create scatterplot with log scale on both axes\n<\/span>sns. <span style=\"color: #3366ff;\">scatterplot<\/span> (data=df, x=' <span style=\"color: #ff0000;\">x<\/span> ', y=' <span style=\"color: #ff0000;\">y<\/span> ')\nplt. <span style=\"color: #3366ff;\">yscale<\/span> (' <span style=\"color: #ff0000;\">log<\/span> ')\nplt. <span style=\"color: #3366ff;\">xscale<\/span> (' <span style=\"color: #ff0000;\">log<\/span> ')<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-32055 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/journaux3.jpg\" alt=\"\" width=\"545\" height=\"418\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Observe que ambos os eixos agora usam uma escala logar\u00edtmica.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Relacionado:<\/strong> <a href=\"https:\/\/statorials.org\/pt\/quando-usar-a-escala-logaritmica\/\" target=\"_blank\" rel=\"noopener\">Quando voc\u00ea deve usar uma escala logar\u00edtmica em gr\u00e1ficos?<\/a><\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Os tutoriais a seguir explicam como realizar outras tarefas comuns no Seaborn:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/titulo-marinho\/\" target=\"_blank\" rel=\"noopener\">Como adicionar um t\u00edtulo aos gr\u00e1ficos Seaborn<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/rotulos-do-eixo-de-rotacao-maritimo\/\" target=\"_blank\" rel=\"noopener\">Como girar r\u00f3tulos de eixo em gr\u00e1ficos Seaborn<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/rotulos-de-eixo-marinho\/\" target=\"_blank\" rel=\"noopener\">Como alterar os r\u00f3tulos dos eixos em um gr\u00e1fico Seaborn<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar as fun\u00e7\u00f5es plt.xscale() e plt.yscale() para usar uma escala logar\u00edtmica para o eixo xey, respectivamente, em um gr\u00e1fico marinho: import matplotlib. pyplot as plt import seaborn as sns #create scatterplot with log scale on both axes sns. scatterplot (data=df, x=&#8217; x &#8216;, y=&#8217; y &#8216;) plt. xscale (&#8216;log&#8217;) plt. yscale (&#8216;log&#8217;) O [&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-4009","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 usar uma escala logar\u00edtmica em gr\u00e1ficos Seaborn - Estatologia<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como usar uma escala logar\u00edtmica em gr\u00e1ficos marinhos em Python, 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\/escala-logaritmica-marinha\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como usar uma escala logar\u00edtmica em gr\u00e1ficos Seaborn - Estatologia\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como usar uma escala logar\u00edtmica em gr\u00e1ficos marinhos em Python, com v\u00e1rios exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/escala-logaritmica-marinha\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-14T05:03:41+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/journaux1.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\/escala-logaritmica-marinha\/\",\"url\":\"https:\/\/statorials.org\/pt\/escala-logaritmica-marinha\/\",\"name\":\"Como usar uma escala logar\u00edtmica em gr\u00e1ficos Seaborn - Estatologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-14T05:03:41+00:00\",\"dateModified\":\"2023-07-14T05:03:41+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como usar uma escala logar\u00edtmica em gr\u00e1ficos marinhos em Python, com v\u00e1rios exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/escala-logaritmica-marinha\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/escala-logaritmica-marinha\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/escala-logaritmica-marinha\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como usar uma escala logar\u00edtmica em gr\u00e1ficos seaborn\"}]},{\"@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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