This question demonstrates how to put an equation into a ggplot2 qplot.
q <- qplot(cty, hwy, data = mpg, colour = displ)
q + xlab(expression(beta +frac(miles, gallon)))
How could I create an empty ggplot2 plot so that I could add the label to an empty canvas?
df <- data.frame()
ggplot(df) + geom_point() + xlim(0, 10) + ylim(0, 100)
and based on @ilya's recommendation, geom_blank is perfect for when you already have data and can just set the scales based on that rather than define it explicitly.
ggplot(mtcars, aes(x = wt, y = mpg)) + geom_blank()
ggplot() + theme_void()
No need to define a dataframe.
Since none of the answers explicitly state how to make a plot that consists only of a label, I thought I'd post that, building off the existing answers.
ggplot2:ggplot() +
theme_void() +
geom_text(aes(0,0,label='N/A')) +
xlab(NULL) #optional, but safer in case another theme is applied later
Makes this plot:
The label will always appear in the center as the plot window resizes.
cowplot:cowplot::ggdraw() +
cowplot::draw_label('N/A')
ggdraw() makes a blank plot while draw_label draws a label in the middle of it:
