Some borders missing from area images

[gerritholl]

Describe the bug

For some areas in the area definitions included in satpy, some borders are missing.

To Reproduce

• Browse to https://satpy.readthedocs.io/en/stable/resample.html#area-definitions-included-in-satpy
• Unfold area images

Expected behavior

All internationally recognised borders should be drawn.

Actual results / Screenshots

Poland, Norway, and SADR are gone.

Czechia and Austria have a dangling border, but are otherwise, along with France and Italy, absorbed in a monster state:

Environment Info:

• OS: openSUSE 15.3
• Firefox Version: 118.0.2

[djhoese]

Can't you ever file bug reports for easy to fix things? 😜

So I'm pretty sure I've seen something like this before and my guess it is related to the resolution of the borders being used and maybe some matplotlib/bokeh stuff deciding not to draw lines that are "too small". I could try generating them locally with the full resolution borders and see what happens.

[djhoese]

This is not better:

diff --git a/doc/source/generate_area_def_list.py b/doc/source/generate_area_def_list.py
index 2c5d8d17b..e552835f7 100644
--- a/doc/source/generate_area_def_list.py
+++ b/doc/source/generate_area_def_list.py
@@ -132,7 +132,7 @@ def _generate_html_map_divs(areas_dict: dict) -> tuple[str, dict]:
             continue
         crs = area_def.to_cartopy_crs()
 
-        features = gv.Overlay([gf.ocean, gf.land, gf.borders, gf.coastline])
+        features = gv.Overlay([gf.ocean, gf.land, gf.borders.geoms('10m'), gf.coastline])
         f = gv.render(
             features.opts(
                 toolbar=None,