{"id":2337,"date":"2023-07-22T17:21:17","date_gmt":"2023-07-22T17:21:17","guid":{"rendered":"https:\/\/statorials.org\/pt\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/"},"modified":"2023-07-22T17:21:17","modified_gmt":"2023-07-22T17:21:17","slug":"valor-invalido-de-runtimewarning-encontrado-em-double_scalars","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/","title":{"rendered":"Como corrigir: runtimewarning: valor inv\u00e1lido encontrado em double_scalars"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Um erro que voc\u00ea pode encontrar em Python \u00e9:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>runtimewarning: invalid value encountered in double_scalars\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Este erro ocorre quando voc\u00ea tenta realizar uma opera\u00e7\u00e3o matem\u00e1tica envolvendo n\u00fameros extremamente pequenos ou extremamente grandes e o Python simplesmente gera um valor NaN como resultado.<\/span><\/p>\n<p> <span style=\"color: #000000;\">O exemplo a seguir mostra como corrigir esse erro na pr\u00e1tica.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Como reproduzir o erro<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Suponha que tentemos realizar a seguinte opera\u00e7\u00e3o matem\u00e1tica com dois arrays NumPy:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n\n<span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#define two NumPy arrays\n<\/span>array1 = np. <span style=\"color: #3366ff;\">array<\/span> ([[1100, 1050]])\narray2 = np. <span style=\"color: #3366ff;\">array<\/span> ([[1200, 4000]])\n\n<span style=\"color: #008080;\">#perform complex mathematical operation\n<\/span>n.p. <span style=\"color: #3366ff;\">exp<\/span> (-3*array1). <span style=\"color: #3366ff;\">sum<\/span> () \/ np. <span style=\"color: #3366ff;\">exp<\/span> (-3*array2). <span style=\"color: #3366ff;\">sum<\/span> ()\n\nRuntimeWarning: invalid value encountered in double_scalars\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Recebemos um <strong>RuntimeWarning<\/strong> porque o resultado no denominador \u00e9 extremamente pr\u00f3ximo de zero.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Isso significa que a resposta ao problema da divis\u00e3o ser\u00e1 extremamente grande e o Python ser\u00e1 incapaz de lidar com um valor t\u00e3o grande.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Como corrigir o erro<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Normalmente, a maneira de corrigir esse tipo de erro \u00e9 usar uma fun\u00e7\u00e3o especial de outra biblioteca Python que pode lidar com valores extremamente pequenos ou extremamente grandes em c\u00e1lculos.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Neste caso, podemos usar a fun\u00e7\u00e3o <strong>logsumexp()<\/strong> da biblioteca SciPy:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n<span style=\"color: #008000;\">from<\/span> scipy. <span style=\"color: #3366ff;\">special<\/span> <span style=\"color: #008000;\">import<\/span> logsumexp\n\n<span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#define two NumPy arrays\n<\/span>array1 = np. <span style=\"color: #3366ff;\">array<\/span> ([[1100, 1050]])\narray2 = np. <span style=\"color: #3366ff;\">array<\/span> ([[1200, 4000]])\n\n<span style=\"color: #008080;\">#perform complex mathematical operation\n<\/span>n.p. <span style=\"color: #3366ff;\">exp<\/span> (logsumexp(-3*array1) - logsumexp(-3*array2))\n\n2.7071782767869983e+195\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Observe que o resultado \u00e9 extremamente grande, mas n\u00e3o recebemos nenhum erro porque usamos uma fun\u00e7\u00e3o matem\u00e1tica especial da biblioteca SciPy projetada para lidar com esses tipos de n\u00fameros.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Em muitos casos, vale a pena procurar fun\u00e7\u00f5es especiais na <a href=\"https:\/\/scipy.org\/\" target=\"_blank\" rel=\"noopener\">biblioteca SciPy<\/a> que possam lidar com opera\u00e7\u00f5es matem\u00e1ticas extremas, porque essas fun\u00e7\u00f5es s\u00e3o projetadas especificamente para computa\u00e7\u00e3o cient\u00edfica.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Nota<\/strong> : Voc\u00ea pode encontrar a documenta\u00e7\u00e3o online completa para a fun\u00e7\u00e3o <strong>logsumexp()<\/strong> <a href=\"https:\/\/docs.scipy.org\/doc\/scipy\/reference\/generated\/scipy.special.logsumexp.html\" target=\"_blank\" rel=\"noopener\">aqui<\/a> .<\/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 corrigir outros erros comuns em Python:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/erro-de-chave-do-pandas\/\" target=\"_blank\" rel=\"noopener\">Como corrigir KeyError em Pandas<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/valueerror-nao-pode-converter-float-nan-em-inteiro\/\" target=\"_blank\" rel=\"noopener\">Como corrigir: ValueError: n\u00e3o \u00e9 poss\u00edvel converter float NaN em int<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/os-operandos-nao-puderam-ser-transmitidos-com-os-formularios\/\" target=\"_blank\" rel=\"noopener\">Como corrigir: ValueError: os operandos n\u00e3o puderam ser transmitidos com formas<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Um erro que voc\u00ea pode encontrar em Python \u00e9: runtimewarning: invalid value encountered in double_scalars Este erro ocorre quando voc\u00ea tenta realizar uma opera\u00e7\u00e3o matem\u00e1tica envolvendo n\u00fameros extremamente pequenos ou extremamente grandes e o Python simplesmente gera um valor NaN como resultado. O exemplo a seguir mostra como corrigir esse erro na pr\u00e1tica. Como reproduzir [&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-2337","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 corrigir: runtimewarning: valor inv\u00e1lido encontrado em double_scalars - Estatologia<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como corrigir o seguinte erro em Python: runtimewarning: valor inv\u00e1lido encontrado em double_scalars.\" \/>\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\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como corrigir: runtimewarning: valor inv\u00e1lido encontrado em double_scalars - Estatologia\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como corrigir o seguinte erro em Python: runtimewarning: valor inv\u00e1lido encontrado em double_scalars.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-22T17:21:17+00:00\" \/>\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\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/\",\"url\":\"https:\/\/statorials.org\/pt\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/\",\"name\":\"Como corrigir: runtimewarning: valor inv\u00e1lido encontrado em double_scalars - Estatologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-22T17:21:17+00:00\",\"dateModified\":\"2023-07-22T17:21:17+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como corrigir o seguinte erro em Python: runtimewarning: valor inv\u00e1lido encontrado em double_scalars.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como corrigir: runtimewarning: valor inv\u00e1lido encontrado em double_scalars\"}]},{\"@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. Com vasta experi\u00eancia e conhecimento na \u00e1rea de estat\u00edstica, estou empenhado em compartilhar meu conhecimento para capacitar os alunos por meio de Statorials. Saber mais\",\"sameAs\":[\"https:\/\/statorials.org\/pt\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Como corrigir: runtimewarning: valor inv\u00e1lido encontrado em double_scalars - Estatologia","description":"Este tutorial explica como corrigir o seguinte erro em Python: runtimewarning: valor inv\u00e1lido encontrado em double_scalars.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/statorials.org\/pt\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/","og_locale":"pt_PT","og_type":"article","og_title":"Como corrigir: runtimewarning: valor inv\u00e1lido encontrado em double_scalars - Estatologia","og_description":"Este tutorial explica como corrigir o seguinte erro em Python: runtimewarning: valor inv\u00e1lido encontrado em double_scalars.","og_url":"https:\/\/statorials.org\/pt\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/","og_site_name":"Statorials","article_published_time":"2023-07-22T17:21:17+00:00","author":"Dr. benjamim anderson","twitter_card":"summary_large_image","twitter_misc":{"Escrito por":"Dr. benjamim anderson","Tempo estimado de leitura":"2 minutos"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/statorials.org\/pt\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/","url":"https:\/\/statorials.org\/pt\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/","name":"Como corrigir: runtimewarning: valor inv\u00e1lido encontrado em double_scalars - Estatologia","isPartOf":{"@id":"https:\/\/statorials.org\/pt\/#website"},"datePublished":"2023-07-22T17:21:17+00:00","dateModified":"2023-07-22T17:21:17+00:00","author":{"@id":"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666"},"description":"Este tutorial explica como corrigir o seguinte erro em Python: runtimewarning: valor inv\u00e1lido encontrado em double_scalars.","breadcrumb":{"@id":"https:\/\/statorials.org\/pt\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/#breadcrumb"},"inLanguage":"pt-PT","potentialAction":[{"@type":"ReadAction","target":["https:\/\/statorials.org\/pt\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/statorials.org\/pt\/valor-invalido-de-runtimewarning-encontrado-em-double_scalars\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Lar","item":"https:\/\/statorials.org\/pt\/"},{"@type":"ListItem","position":2,"name":"Como corrigir: runtimewarning: valor inv\u00e1lido encontrado em double_scalars"}]},{"@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. Com vasta experi\u00eancia e conhecimento na \u00e1rea de estat\u00edstica, estou empenhado em compartilhar meu conhecimento para capacitar os alunos por meio de Statorials. Saber mais","sameAs":["https:\/\/statorials.org\/pt"]}]}},"yoast_meta":{"yoast_wpseo_title":"","yoast_wpseo_metadesc":"","yoast_wpseo_canonical":""},"_links":{"self":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/posts\/2337","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/comments?post=2337"}],"version-history":[{"count":0,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/posts\/2337\/revisions"}],"wp:attachment":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/media?parent=2337"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/categories?post=2337"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/tags?post=2337"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}