sf graticules are drawn even if relevant theme elements are set to element_blank()

[karldw]

theme_void() is a great way to clear out all the extra lines in a chart. My intuition was that this theme would remove to graticules from geom_sf() as well, but it doesn't. Do you think it should?

library(sf) 
library(ggplot2)

nc <- st_read(system.file("gpkg/nc.gpkg", package = "sf")) 

ggplot(nc) + 
  geom_sf(data = nc, aes(fill = AREA)) + 
  theme_void()

# The actual way to remove graticules:
ggplot(nc) + 
  geom_sf(data = nc, aes(fill = AREA)) + 
  coord_sf(datum = NA) + 
  theme_void()

Here's a theme_void map of North Carolina:

And here's what I expected, with no graticule:

Ref: #2071

[hadley]

Duplicate of #2389

[mikmart]

@hadley this issue still persists after #2389 and the underlying cause seems to be that CoordSf$render_bg() doesn't handle element_blank() as the panel.grid element properly.

[clauswilke]

I can confirm that this problem still exists in the current github master. I'm reopening the issue.

library(sf) 
#> Linking to GEOS 3.6.1, GDAL 2.1.3, proj.4 4.9.3
library(ggplot2)

nc <- st_read(system.file("gpkg/nc.gpkg", package = "sf"), quiet = TRUE) 

ggplot(nc) + 
  geom_sf(data = nc, aes(fill = AREA)) + 
  theme_void()

Created on 2018-09-24 by the reprex package (v0.2.0).

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