fun with facet labels

[Gray, Wayne]

All,

I believe a recent upgrade in ggplot2 is affecting the facet labels in ways that I do not know how to control.

I have attached two plots.

“Rplot_numFix_by_Lvl_nc” used:  facet_wrap(crit.sc ~ sid, ncol=5) to produce the label that I like — namely it has both the “crit.sc” and the “sid” in the header of each plot, with a comma btw the two. NOTE THAT THESE ARE ON THE SAME LINE!! That is good!!

Now — look at the “Rplot_new_plot”. You will see that ggplot is putting each of the two values EACH ON ITS OWN LINE — thereby using TWO lines!! I can no longer study the changes over each facet as they are all smooshed! (tech term for the newbies reading this)!

I used to use this:

+  facet_wrap(crit.sc ~ sid, ncol=4)

and it gave me what I wanted, both values on the same line.

BUT now it puts them each on separate line so that the header is wider than the plot!!

I have played with the “new” (???) labeller feature to no avail!

+  facet_wrap(crit.sc ~ sid, ncol=4, labeller = label_value)

## gives exactly the same result as my original command

+  facet_wrap(crit.sc ~ sid, ncol=4, labeller = label_wrap_gen(width=100)  # still two lines

+  facet_wrap(crit.sc ~ sid, ncol=4, labeller = label_value(multi-line = FALSE) # breaks ggplot

Thanks for any help,

Wayne

[Dennis Murphy]

Hi:

The labeller functions have changed in version 2.x.y. What you need is
the .multi_line = FALSE argument in the revised labeller() function.
Here's an example using the mtcars data:

library(ggplot2)

ggplot(mtcars, aes(x = disp, y = mpg)) +
geom_point() +
facet_wrap(~ vs + am, label = labeller(.default = label_both,
.multi_line = FALSE))

Since you wanted label_both() for each strip label, I used it as the default.

Dennis

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[Gray, Wayne]

Many thanks Dennis. That works!

For my purposes I used “label_value” rather than your suggestion of “label_both”.

+ facet_wrap(crit.sc ~ sid, ncol=4, label = labeller(.default = label_value, .multi_line = FALSE))

“label_value” returned the value for both “crit.sc” (a numeric) and “sid” (a factor), separated by a comma, and both on the same line.

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