[enhancement] patchwork instead of cowplot

[Generalized]

Dear Author of the dabestr,

It's not about any error, but something that might, potentially, facilitate your work.
I noted that some people asked you "how to add a title to the plot", "how to control this-and-that". I admit, I was searching for this too. Once you answered, that the final graph consists of a set of sub-graphs, combined via cowplot (#85)

There is another package, that might be useful for your (awesome!) work, the patchwork:

BTW, it's possible to add title to the plot via cowplot, but it's not very intuitive:

dp stands for dabestr_plot

title <- ggdraw() + 
    draw_label(
        "My title", fontface = 'bold', x = 0, hjust = 0) +
    theme( plot.margin = margin(0, 0, 0, 7)) # the margin aligns title with left edge of the first plot

plot_grid(title, dp,
    ncol = 1, rel_heights = c(0.1, 1) #vertical title margins
)

...with patchwork it's easier. Let me use a fake, simple plot to illustrate (just 2 histograms).

p1 <- ggplot(mtcars) + geom_histogram(aes(x=mpg))
p2 <- ggplot(mtcars) + geom_boxplot(aes(y=hp))

p1 + p2+ plot_annotation(title = 'The title', subtitle = 'and subtitle') # 2 plots + common title

But that's not all! You can access each component and modify it after the composition:

compound_graph <- p1 + p2+ plot_annotation(title = 'The title', subtitle = 'and subtitle') # 2 plots + common title

# Let's modify the title of the X axis for the 1st graph:
compound_graph[[1]] <- compound_graph[[1]] + xlab("XXXX")

# also, let's modify the boxplot (just by adding another one, overlying the old one) and change its style:
compound_graph[[2]] <- compound_graph[[2]] + geom_boxplot(aes(y=hp), col="red", fill="blue", alpha=0.5) + theme_bw()
compound_graph

If you want to change the title after all, just do it:

compound_graph + plot_annotation(title = "Naaah, let's change the title :)")