{"id":3576,"date":"2023-07-16T18:22:24","date_gmt":"2023-07-16T18:22:24","guid":{"rendered":"https:\/\/statorials.org\/it\/sottotrame-dei-panda\/"},"modified":"2023-07-16T18:22:24","modified_gmt":"2023-07-16T18:22:24","slug":"sottotrame-dei-panda","status":"publish","type":"post","link":"https:\/\/statorials.org\/it\/sottotrame-dei-panda\/","title":{"rendered":"Panda: come tracciare pi\u00f9 dataframes in sottotrame"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u00c8 possibile utilizzare la seguente sintassi di base per tracciare pi\u00f9 dataframe panda in sottotrame:<\/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\n<span style=\"color: #008080;\">#define subplot layout\n<\/span>fig, axes = plt. <span style=\"color: #3366ff;\">subplots<\/span> (nrows= <span style=\"color: #008000;\">2<\/span> , ncols= <span style=\"color: #008000;\">2<\/span> )\n\n<span style=\"color: #008080;\">#add DataFrames to subplots\n<\/span>df1. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[0,0])\ndf2. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[0,1])\ndf3. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[1,0])\ndf4. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[1,1])\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">L&#8217;esempio seguente mostra come utilizzare questa sintassi nella pratica.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Esempio: tracciare pi\u00f9 dataframe Panda in sottotrame<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Supponiamo di avere quattro DataFrames panda che contengono informazioni su vendite e resi in quattro diversi negozi al dettaglio:<\/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\n<span style=\"color: #008080;\">#create four DataFrames\n<\/span>df1 = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">sales<\/span> ': [2, 5, 5, 7, 9, 13, 15, 17, 22, 24],\n                    ' <span style=\"color: #ff0000;\">returns<\/span> ': [1, 2, 3, 4, 5, 6, 7, 8, 7, 5]})\n\ndf2 = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">sales<\/span> ': [2, 5, 11, 18, 15, 15, 14, 9, 6, 7],\n                    ' <span style=\"color: #ff0000;\">returns<\/span> ': [1, 2, 0, 2, 2, 4, 5, 4, 2, 1]})\n\ndf3 = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">sales<\/span> ': [6, 8, 8, 7, 8, 9, 10, 7, 8, 12],\n                    ' <span style=\"color: #ff0000;\">returns<\/span> ': [1,0, 1, 1, 1, 2, 3, 2, 1, 3]})\n\ndf4 = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">sales<\/span> ': [10, 7, 7, 6, 7, 6, 4, 3, 3, 2],\n                    ' <span style=\"color: #ff0000;\">returns<\/span> ': [4, 4, 3, 3, 2, 3, 2, 1, 1, 0]})<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Possiamo utilizzare la seguente sintassi per tracciare ciascuno di questi DataFrames in una sottotrama avente un layout di 2 righe e 2 colonne:<\/span><\/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\n<span style=\"color: #008080;\">#define subplot layout\n<\/span>fig, axes = plt. <span style=\"color: #3366ff;\">subplots<\/span> (nrows= <span style=\"color: #008000;\">2<\/span> , ncols= <span style=\"color: #008000;\">2<\/span> )\n\n<span style=\"color: #008080;\">#add DataFrames to subplots\n<\/span>df1. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[0,0])\ndf2. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[0,1])\ndf3. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[1,0])\ndf4. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[1,1])<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-29532\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sous1.jpg\" alt=\"sottotrame del panda\" width=\"669\" height=\"449\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Ciascuno dei quattro DataFrames viene visualizzato in una sottotrama.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Tieni presente che abbiamo utilizzato l&#8217;argomento <strong>assi<\/strong> per specificare dove posizionare ciascun DataFrame.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Ad esempio, il DataFrame chiamato <strong>df1<\/strong> \u00e8 stato posizionato nella posizione con un valore di indice di riga pari a <strong>0<\/strong> e un valore di indice di colonna pari a <strong>0<\/strong> (ad esempio la sottotrama nell&#8217;angolo in alto a sinistra).<\/span><\/p>\n<p> <span style=\"color: #000000;\">Tieni inoltre presente che puoi modificare il layout delle sottotrame utilizzando gli argomenti <strong>nrows<\/strong> e <strong>ncols<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Ad esempio, il codice seguente mostra come organizzare le sottotrame in quattro righe e una colonna:<\/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\n<span style=\"color: #008080;\">#define subplot layout\n<\/span>fig, axes = plt. <span style=\"color: #3366ff;\">subplots<\/span> (nrows= <span style=\"color: #008000;\">4<\/span> , ncols= <span style=\"color: #008000;\">1<\/span> )\n\n<span style=\"color: #008080;\">#add DataFrames to subplots\n<\/span>df1. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[0])\ndf2. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[1])\ndf3. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[2])\ndf4. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[3])<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-29533 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sous2.jpg\" alt=\"\" width=\"555\" height=\"480\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Le sottotrame sono ora disposte in un layout con quattro righe e una colonna.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Tieni presente che se desideri che le sottotrame abbiano le stesse scale sugli assi y e x, puoi utilizzare gli argomenti <strong>sharey<\/strong> e <strong>sharex<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Ad esempio, il codice seguente mostra come utilizzare l&#8217;argomento <strong>sharey<\/strong> per forzare tutte le sottotrame ad avere la stessa scala sull&#8217;asse Y:<\/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\n<span style=\"color: #008080;\">#define subplot layout, force subplots to have same y-axis scale\n<\/span>fig, axes = plt. <span style=\"color: #3366ff;\">subplots<\/span> (nrows= <span style=\"color: #008000;\">4<\/span> , ncols= <span style=\"color: #008000;\">1<\/span> , sharey= <span style=\"color: #008000;\">True<\/span> )\n\n<span style=\"color: #008080;\">#add DataFrames to subplots\n<\/span>df1. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[0])\ndf2. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[1])\ndf3. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[2])\ndf4. <span style=\"color: #3366ff;\">plot<\/span> (ax=axes[3])<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-29534 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sous3.jpg\" alt=\"\" width=\"558\" height=\"470\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Tieni presente che l&#8217;asse Y di ciascuna sottotrama ora varia da 0 a 20.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Risorse addizionali<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">I seguenti tutorial spiegano come eseguire altre operazioni comuni nei panda:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/it\/grafico-a-torta-del-panda\/\" target=\"_blank\" rel=\"noopener\">Come creare un grafico a torta da Pandas DataFrame<\/a><br \/> <a href=\"https:\/\/statorials.org\/it\/nuvola-di-punti-panda\/\" target=\"_blank\" rel=\"noopener\">Come creare una nuvola di punti da Pandas DataFrame<\/a><br \/> <a href=\"https:\/\/statorials.org\/it\/istogramma-del-panda\/\" target=\"_blank\" rel=\"noopener\">Come creare un istogramma da Pandas DataFrame<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c8 possibile utilizzare la seguente sintassi di base per tracciare pi\u00f9 dataframe panda in sottotrame: import matplotlib. pyplot as plt #define subplot layout fig, axes = plt. subplots (nrows= 2 , ncols= 2 ) #add DataFrames to subplots df1. plot (ax=axes[0,0]) df2. plot (ax=axes[0,1]) df3. plot (ax=axes[1,0]) df4. plot (ax=axes[1,1]) L&#8217;esempio seguente mostra come utilizzare [&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":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Panda: come tracciare pi\u00f9 DataFrames in sottotrame - Statorials<\/title>\n<meta name=\"description\" content=\"Questo tutorial spiega come tracciare pi\u00f9 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