{"id":4153,"date":"2023-07-13T06:00:11","date_gmt":"2023-07-13T06:00:11","guid":{"rendered":"https:\/\/statorials.org\/pt\/histograma-do-pandas-para-cada-coluna\/"},"modified":"2023-07-13T06:00:11","modified_gmt":"2023-07-13T06:00:11","slug":"histograma-do-pandas-para-cada-coluna","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/histograma-do-pandas-para-cada-coluna\/","title":{"rendered":"Pandas: crie um histograma para cada coluna no dataframe"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar a seguinte sintaxe b\u00e1sica para criar um histograma para cada coluna de um DataFrame do pandas:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd\n<span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt\n\n<span style=\"color: #008080;\">#define number of subplots<\/span>\nfig, axis = plt. <span style=\"color: #3366ff;\">subplots<\/span> <span style=\"color: #000000;\">(1, 3)<\/span>\n\n<span style=\"color: #008080;\">#create histogram for each column in DataFrame\n<\/span>df. <span style=\"color: #3366ff;\">hist<\/span> (ax=axis)\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Este exemplo espec\u00edfico usa a fun\u00e7\u00e3o <strong>subplots()<\/strong> para especificar que existem <strong>3<\/strong> colunas no DataFrame e, em seguida, cria um histograma para cada coluna.<\/span><\/p>\n<p> <span style=\"color: #000000;\">O exemplo a seguir mostra como usar essa sintaxe na pr\u00e1tica.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo: Crie um histograma para cada coluna no histograma do Pandas<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Suponha que temos o seguinte DataFrame do pandas que cont\u00e9m tr\u00eas colunas:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd\n<span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n<span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">\n#make this example reproducible\n<\/span>n.p. <span style=\"color: #3366ff;\">random<\/span> . <span style=\"color: #3366ff;\">seeds<\/span> (1)\n\n<span style=\"color: #008080;\">#createDataFrame\n<\/span>df = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">points<\/span> ': np. <span style=\"color: #3366ff;\">random<\/span> . <span style=\"color: #3366ff;\">normal<\/span> (loc=20, scale=2, size=300),\n                   ' <span style=\"color: #ff0000;\">assists<\/span> ': np. <span style=\"color: #3366ff;\">random<\/span> . <span style=\"color: #3366ff;\">normal<\/span> (loc=14, scale=3, size=300),\n                   ' <span style=\"color: #ff0000;\">rebounds<\/span> ': np. <span style=\"color: #3366ff;\">random<\/span> . <span style=\"color: #3366ff;\">normal<\/span> (loc=12, scale=1, size=300)})\n\n<span style=\"color: #008080;\">#view head of DataFrame\n<\/span><span style=\"color: #008000;\">print<\/span> ( <span style=\"color: #3366ff;\">df.head<\/span> ())\n\n      points assists rebounds\n0 23.248691 20.197350 10.927036\n1 18.776487 9.586529 12.495159\n2 18.943656 11.509484 11.047938\n3 17.854063 11.358267 11.481854\n4 21.730815 13.162707 10.538596\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Podemos usar a seguinte sintaxe para criar um histograma para cada uma das tr\u00eas colunas do DataFrame:<\/span><\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt<\/span>\n\n#define format for subplots (1 row and 3 columns)\n<\/span>fig, axis = plt. <span style=\"color: #3366ff;\">subplots<\/span> (1, 3)\n\n<span style=\"color: #008080;\">#create histogram for each column in DataFrame\n<\/span>df. <span style=\"color: #3366ff;\">hist<\/span> (ax=axis)\n<\/span><\/span><\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-32984 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/ac1.png\" alt=\"\" width=\"529\" height=\"408\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">O resultado \u00e9 uma grade com uma linha e tr\u00eas colunas que exibe um histograma para cada coluna do DataFrame.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Se desejar, voc\u00ea pode usar o argumento <strong>figsize<\/strong> para alterar o tamanho dos histogramas, bem como os argumentos <strong>edgecolor<\/strong> e <strong>grid<\/strong> para melhorar a apar\u00eancia dos histogramas:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt \n\n<span style=\"color: #008080;\">#define format for subplots\n<\/span>fig, axis = plt. <span style=\"color: #3366ff;\">subplots<\/span> (1, 3, figsize=(8,3))\n\n<span style=\"color: #008080;\">#create histogram for each column in DataFrame\n<\/span>df. <span style=\"color: #3366ff;\">hist<\/span> (ax=axis, edgecolor=' <span style=\"color: #ff0000;\">black<\/span> ', grid= <span style=\"color: #008000;\">False<\/span> )<\/span><\/span><\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-32985\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/ac2.png\" alt=\"pandas criam um histograma para cada coluna no DataFrame\" width=\"665\" height=\"294\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Sinta-se \u00e0 vontade para brincar com os argumentos da fun\u00e7\u00e3o <strong>subplots()<\/strong> para definir o formato e tamanho exatos dos histogramas.<\/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 em pandas:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/caixas-de-histograma-de-pandas\/\" target=\"_blank\" rel=\"noopener\">Como alterar o n\u00famero de caixas usadas no histograma do Pandas<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/histograma-do-pandas-x-faixa-do-eixo\/\" target=\"_blank\" rel=\"noopener\">Como alterar o intervalo do eixo X no histograma do Pandas<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/histograma-de-pandas-por-grupo\/\" target=\"_blank\" rel=\"noopener\">Como tra\u00e7ar histogramas por grupo no Pandas<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar a seguinte sintaxe b\u00e1sica para criar um histograma para cada coluna de um DataFrame do pandas: import pandas as pd import matplotlib. pyplot as plt #define number of subplots fig, axis = plt. subplots (1, 3) #create histogram for each column in DataFrame df. hist (ax=axis) Este exemplo espec\u00edfico usa a fun\u00e7\u00e3o [&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-4153","post","type-post","status-publish","format-standard","hentry","category-guia"],"yoast_head":"<!-- This site is optimized with 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