R (ggplot) - 是否可以将 X 或 Y 轴的“部分”加粗？

Question

I thought this would be simple, but can't seem to find anything.

I have a ggplot, which contains a label:

labs(y = "Total Yearly Funding (£m) - 2019 Prices\n\n(log10)\n")

I want to bold everything but '(log10)' .

I thought it would be as simple as using '<b>' tags ie:

labs(y = "<b>Total Yearly Funding (£m) - 2019 Prices</b>\n\n(log10)\n")

But that doesn't do anything. Is what I want possible?

Many thanks

Answer 1

One method is to use an expression, another keyword could be italic if wanted:

p <- ggplot(mtcars, aes(mpg, wt, colour = cyl)) + geom_point()
p + labs(x=(expression(paste(bold("this is bold"), " and this is not bold"))))

---

Edit: since we found another solution by commentary I want to input it here. A simple line break is possible by using atop . For further information check this old question . atop provides one line break for the plotmath expressions and centers them.

with:

labs(x=(expression(atop(bold("top"), "bottom"))))

we get:

Answer 2

How about this:

p <- ggplot(...) + ggtitle("Yeah Buddy") +
  xlab("bold_x") + ylab("Total Yearly Funding (£m) - 2019 Prices\n\n(log10)\n")
p + theme(
axis.title.y = element_text(face="bold")
)
p