{"id":1870,"date":"2023-07-24T16:08:39","date_gmt":"2023-07-24T16:08:39","guid":{"rendered":"https:\/\/statorials.org\/it\/lasse-ggplot-salta\/"},"modified":"2023-07-24T16:08:39","modified_gmt":"2023-07-24T16:08:39","slug":"lasse-ggplot-salta","status":"publish","type":"post","link":"https:\/\/statorials.org\/it\/lasse-ggplot-salta\/","title":{"rendered":"Come impostare le interruzioni degli assi in ggplot2 (con esempi)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u00c8 possibile utilizzare la seguente sintassi per impostare i salti degli assi per l&#8217;asse y e l&#8217;asse x in <a href=\"https:\/\/ggplot2.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">ggplot2<\/a> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#set breaks on y-axis\n<\/span>scale_y_continuous(limits = c(0, 100), breaks = c(0, 50, 100))\n\n<span style=\"color: #008080;\">#set breaks on y-axis\n<span style=\"color: #000000;\">scale_x_continuous(limits = c(0, 10), breaks = c(0, 2, 4, 6, 8, 10))<\/span><\/span>\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Gli esempi seguenti mostrano come utilizzare in pratica questa sintassi con il seguente frame di dati:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame\n<\/span>df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (x=c(1, 2, 4, 5, 7, 8, 9, 10),\n                 y=c(12, 17, 27, 39, 50, 57, 66, 80))\n\n<span style=\"color: #008080;\">#view data frame<\/span>\ndf\n\n   xy\n1 1 12\n2 2 17\n3 4 27\n4 5 39\n5 7 50\n6 8 57\n7 9 66\n8 10 80\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Esempio 1: Definire i salti sull&#8217;asse Y<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Il codice seguente mostra come creare un semplice grafico a dispersione utilizzando ggplot2:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #993300;\">library<\/span> (ggplot2)<\/span><\/span>\n\n<span style=\"color: #008080;\">#create scatterplot of x vs. y\n<\/span>ggplot(df, aes(x=x, y=y)) +\n  geom_point() \n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-17938 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/pauses1.png\" alt=\"\" width=\"465\" height=\"459\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Per impostazione predefinita, l&#8217;asse Y mostra le interruzioni a 20, 40, 60 e 80. Tuttavia, possiamo utilizzare la funzione <strong>scale_y_continuous()<\/strong> per mostrare invece le interruzioni ogni 10 valori:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create scatterplot of x vs. y with custom breaks on y-axis\n<\/span>ggplot(df, aes(x=x, y=y)) +\n  geom_point() +\n  scale_y_continuous(limits = c(0, 100), breaks = seq(0, 100, 10))<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-17939 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/pauses2.png\" alt=\"\" width=\"480\" height=\"476\" srcset=\"\" sizes=\"\"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Esempio 2: Definire i salti sull&#8217;asse X<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Possiamo usare la funzione <strong>scale_x_continuous()<\/strong> per impostare le pause sull&#8217;asse x:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create scatterplot of x vs. y with custom breaks on x-axis\n<\/span>ggplot(df, aes(x=x, y=y)) +\n  geom_point() +\n  scale_x_continuous(limits = c(0, 10), breaks = c(0, 2, 4, 6, 8, 10))<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-17940 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/pauses3.png\" alt=\"\" width=\"478\" height=\"480\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Generalmente impostiamo i salti degli assi a intervalli uniformi, ma possiamo scegliere di impostare i salti degli assi solo a numeri specifici.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Ad esempio, il codice seguente mostra come visualizzare i salti sull&#8217;asse X solo ai valori 0, 7 e 10:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create scatterplot of x vs. y with custom breaks on x-axis\n<\/span>ggplot(df, aes(x=x, y=y)) +\n  geom_point() +\n  scale_x_continuous(limits = c(0, 10), breaks = c(0, 7, 10))<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-17941 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/pauses4.png\" alt=\"\" width=\"481\" height=\"493\" srcset=\"\" sizes=\"\"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Risorse addizionali<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">I seguenti tutorial mostrano come eseguire altre operazioni comuni in ggplot2:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/it\/scala-logaritmica-ggplot2\/\" target=\"_blank\" rel=\"noopener\">Come creare una scala logaritmica in ggplot2<\/a><br \/> <a href=\"https:\/\/statorials.org\/it\/imposta-i-limiti-dellasse-ggplot2\/\" target=\"_blank\" rel=\"noopener\">Come impostare i limiti degli assi in ggplot2<\/a><br \/> <a href=\"https:\/\/statorials.org\/it\/ruotare-le-etichette-degli-assi-ggplot2\/\" target=\"_blank\" rel=\"noopener\">Come ruotare le etichette degli assi in ggplot2<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c8 possibile utilizzare la seguente sintassi per impostare i salti degli assi per l&#8217;asse y e l&#8217;asse x in ggplot2 : #set breaks on y-axis scale_y_continuous(limits = c(0, 100), breaks = c(0, 50, 100)) #set breaks on y-axis scale_x_continuous(limits = c(0, 10), breaks = c(0, 2, 4, 6, 8, 10)) Gli esempi seguenti mostrano come [&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 - 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