具有这样的数据结构:
df <- data.frame(label=c("yahoo","google","yahoo","yahoo","google","google","yahoo","yahoo"), year=c(2000,2001,2000,2001,2003,2003,2003,2003))
如何生成这样的热图:
library(ggplot2)
library(ggridges)
theme_set(theme_ridges())
ggplot(
lincoln_weather,
aes(x = `Mean Temperature [F]`, y = `Month`)
) +
geom_density_ridges_gradient(
aes(fill = ..x..), scale = 3, size = 0.3
) +
scale_fill_gradientn(
colours = c("#0D0887FF", "#CC4678FF", "#F0F921FF"),
name = "Temp. [F]"
)+
labs(title = 'Temperatures in Lincoln NE')
如何翻转绘图轴,即以年份为x轴,标签为y轴?
答案 0 :(得分:1)
好吧,只需使用coord_flip()
。请参阅ggplot2
documentation。为了使内容整洁,请使用axis.text.x
旋转轴标签,然后使用scale_y_discrete
重新排序LTR月份:
ggplot(
lincoln_weather,
aes(x = `Mean Temperature [F]`, y = `Month`)
) +
geom_density_ridges_gradient(
aes(fill = ..x..), scale = 3, size = 0.3
) +
scale_fill_gradientn(
colours = c("#0D0887FF", "#CC4678FF", "#F0F921FF"),
name = "Temp. [F]"
)+
labs(title = 'Temperatures in Lincoln NE') +
coord_flip()+
theme(axis.text.x = element_text(angle = 90, hjust=1))+
scale_y_discrete(limits = rev(levels(lincoln_weather$Month)))
现在看来有点不可思议,为什么scale_y
而不是scale_x
呢?看来ggplot
首先构造了plot元素,然后才进行翻转,旋转,应用样式等等,并且由于月份最初位于y轴上,因此您需要使用scale_y_discrete
。
如果您的数据现在具有重要顺序,那么显然您可以跳过整个scale_y_discrete
事情。