Difficulty labeling longitude with geom_sf

[cactusoxbird]

I'm having trouble plotting a world map with the x-axis (longitude) labeled similarly to the y-axis. The longitude labels don't make sense to me and don't seem to respond to scale_x_continuous().

library(tidyverse)
library(sf)
#> Linking to GEOS 3.9.0, GDAL 3.2.1, PROJ 7.2.1
library(rnaturalearth)

ggplot() +
  geom_sf(data = ne_countries(returnclass = "sf"),
          fill = "gray90", color = NA) +
  geom_sf(data = ne_coastline(returnclass = "sf")) +
  ylab("") +
  xlab("") +
  theme_bw() +
  coord_sf(expand = FALSE) +
  scale_x_continuous(breaks = seq(from = -180, to = 180, by = 60))

ggplot() +
  geom_sf(data = ne_countries(returnclass = "sf"),
          fill = "gray90", color = NA) +
  geom_sf(data = ne_coastline(returnclass = "sf")) +
  ylab("") +
  xlab("") +
  theme_bw() +
  coord_sf(expand = FALSE)

^{Created on 2021-07-26 by the reprex package (v2.0.0)}

Is there a way to format labels along both axes to match the way that the latitude is currently shown?

[D.H.Slone]

Both of your examples work fine for me (thanks for the reprex). Maybe look into your ggplot default parameters? reinstall the packages? I noticed that there are no grid lines on your plots either so perhaps you have something set to NULL.

[cactusoxbird]

Thanks! I hadn't realized that the grid lines were missing, too. I'll take a closer look and maybe try some re-installs.

[cactusoxbird]

So I've tried reinstalling sf, tidyverse, ggplot2 and haven't had any luck. Did a quick check of defaults, and nothing stood out to me. Not sure what else to try!

[ach]

Your example code works for me as well, but it's interesting as I was having this exact issue the other day. It was after trying different projections using the "crs" option in coord_sf(). Restarting my computer and coming back to it fixed it, will post if I can replicate your issue.

Some session info:

R version 4.0.2 (2020-06-22)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 18363)

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] rnaturalearth_0.1.0 sf_0.9-6            forcats_0.5.0      
 [4] stringr_1.4.0       dplyr_1.0.7         purrr_0.3.4        
 [7] readr_1.4.0         tidyr_1.1.2         tibble_3.0.4       
[10] ggplot2_3.3.2       tidyverse_1.3.0    

[cactusoxbird]

That is interesting! I have gone through a few restarts this week and haven't had any luck. (I also tried it with R 4.0.2 seeing as you are using a different R version than me).

Thanks for sharing!

[cactusoxbird]

This is a side effect from sf and can be fixed by running sf_use_s2(FALSE). See here for details.

[ach]

Thanks for following up...will bookmark that!
Cheers

[D.H.Slone]

I checked my install and sf_use_s2() is already FALSE (hence why I did not have the problem). I certainly did not do that myself so I wonder what would cause it to be TRUE for some environments and FALSE for others?