Feature Request: Add 'clip' argument to coord_sf()

[bschneidr]

Just as coord_map() has a clip argument (e.g. coord_map(clip = 'off')), it would be useful for coord_sf() to have a clip argument, too.

I think these are the two sections of the code that would need to be updated (ignoring the roxygen comments).

ggplot2/R/sf.R

Lines 788 to 792 in 3e1e6e4

	coord_sf <- function(xlim = NULL, ylim = NULL, expand = TRUE,
	crs = NULL, datum = sf::st_crs(4326),
	label_graticule = waiver(),
	label_axes = waiver(),
	ndiscr = 100, default = FALSE) {

ggplot2/R/sf.R

Lines 825 to 835 in 3e1e6e4

	ggproto(NULL, CoordSf,
	limits = list(x = xlim, y = ylim),
	datum = datum,
	crs = crs,
	label_axes = label_axes,
	label_graticule = label_graticule,
	ndiscr = ndiscr,
	expand = expand,
	default = default
	)
	}

[clauswilke]

Yes, absolutely. I'm embarrassed that I missed that one. We're too late for ggplot2 3.1.0, but this can be done for the next release.

As workaround, you can probably just assign your coord_sf() call to a variable and then set the clip attribute to "off":

crd <- coord_sf(...)
crd$clip <- "off"
ggplot() + ... + crd

I haven't tried this but I assume this will work.

[bschneidr]

Thanks, @clauswilke!

I can confirm that that workaround does indeed work.

crd <- coord_sf()
crd$clip <- "off"

my_plot + crd

[hadley]

@clauswilke we can probably squeeze it in - I forgot to submit last week, and I'm travelling until Thursday.

[clauswilke]

@hadley I made a PR: #2942
I'm always worried that even very minor, seemingly innocuous changes may have unexpected side effects, but maybe this is a safe feature to add at the last minute.

@bschneidr Could you install the branch with the added feature and test? Let me know if you need help installing.

[bschneidr]

Beautiful! It worked like a charm.

library(ggplot2) # Installed using devtools::install_github("tidyverse/ggplot2#2942")
library(dplyr)
library(sf)
library(tigris)

# Download the Louisville-area shapefile from Census Bureau using tigris
  ky_zcta_sf <- tigris::zctas(cb = TRUE,
                              class = 'sf',
                              state = "KY", year = 2016) %>% 
    filter(startsWith(ZCTA5CE10, "402"))

# Plot the ZIP codes of Louisville
  ggplot(ky_zcta_sf) +
    geom_sf(fill = "#39499C", color = "white") +
    geom_text(x = -85.325, y = 38.15,
              label = "Out-of-bounds\ntext") +
    scale_x_continuous(limits = c(-86, -85.35)) +
    coord_sf(clip = 'off') +
    theme(plot.margin = unit(c(.1, .5, .1, .1), 'in'))

^{Created on 2018-10-16 by the reprex package (v0.2.1.9000)}

Session info

devtools::session_info()
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