R ggplot2在标题中添加今天的日期 [英] R ggplot2 Add today's date to the title

问题描述

原则上，我敢肯定这很简单....

In principle, I'm sure this is straightforward....

如何将今天的日期附加到我的ggplot标题上?

How do I append today's date to my ggplot title?

today.date <- Sys.Date() 
labs(title='Daily New COVID-19 Hospitalizations as of ', x=....)

换句话说，今天/日期追加到我的绘图标题的R/ggplot语法是什么?我最好使用ggtitle而不是lab作为标题-这样会更容易吗?

In other words, what's the R / ggplot syntax to append today.date to my plot title? Am I better off using ggtitle rather than labs for the title -- does that make it easier?

谢谢！

推荐答案

同时使用 labs 和 ggtitle ，您可以使用函数 paste()如下:

Both with labs and ggtitle you can use function paste() as follows:

labs(title = paste('Daily New COVID-19 Hospitalizations as of', today.date, sep = " "))

或

ggtitle(paste('Daily New COVID-19 Hospitalizations as of', today.date, sep = " ")) 

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