Additional landuse merging at low- and mid-zooms

[nvkelso]

Followup to #1779 which started merging some types of landuse.

Upon further examination, even more merging can be had in the mid-zooms.

Child task of #1721.

[nvkelso]

This table is updated from one that @zerebubuth provided me:

LEGEND

• merged? = if it was merged in the earlier PR
• do not merge = no transform suggested
• suggest = a new kind transform suggested
• notes = my notes back to Matt, or other explanations

kind	merged?	do not merge	suggest	note
aerodrome		x		yep, top level
airfield			aerodrome	yep, there are a lot of these.
allotments	urban_area			yep (though new z13+ makes irrelevant)
amusement_ride			urban_area	yep (though new z15+ makes irrelevant)
animal			urban_area	yep (though new z13+ makes irrelevant)
apron			aerodrome	yep (though new z13+ makes irrelevant)
aquarium		x		no (new min_zoom is z12)
artwork			urban_area	sure (no change at z11)
attraction			urban_area	sure (no change at z12)
aviary			urban_area	yep (though new z13+ makes irrelevant)
bare_rock	barren			NO CHANGE
battlefield		x		NO CHANGE
beach		x		NO CHANGE
breakwater			barren	"land" (but also change min_zoom to z13 to avoid situation)
bridge			urban_area	yep (though new z13+ makes irrelevant)
caravan_site		x		no. unique feature, chaning z12+
carousel			urban_area	yes
cemetery		x		CHANGE FROM EARLIER. no, better to have as green area
cinema			urban_area	yes
city_wall		x		no, it's only z12+ already
college			urban_area	no, remap to university
commercial	urban_area			NO CHANGE
common			grassland	yes
container_terminal			urban_area	yes (z11+ anyhow)
cutline			forest	updated: it's a line geometry anyhow?
dam			barren	"land" but also updated min_zoom to 11+
danger_area			military	good call; z9 in the data now
desert	desert			NO CHANGE
dike			barren	"land" but also updated min_zoom to 13+
dog_park			urban_area	yep (though new z13+ makes irrelevant)
enclosure			urban_area	yep (though new z13+ makes irrelevant)
farm	farmland			NO CHANGE
farmland	farmland			NO CHANGE
ferry_terminal			urban_area	yep (hardly any of these)
footway			urban_area	yep (though new z13+ makes irrelevant)
forest	forest			NO CHANGE
fort			urban_area	yep (new z11 is a little counter to that, but okay)
fuel			urban_area	yep (though new z13+ makes irrelevant)
garden		x		no: it's different enough (plus green area); and only starts a few at zoom 12 with most coming in at zoom 13
generator			urban_area	yep (z10 now, but let's just let the remapping happen)
glacier		x		NO CHANGE
golf_course		x		naw, it's it's own thing
grass	grassland			NO CHANGE
grassland	grassland			NO CHANGE
grave_yard			cemetery	no, changed to cemetery (from urban area) as it's more "green area"
groyne			barren	"land" but also updated min_zoom to 13+
harbour				SKIP as this got us into trouble in v1.5 – it's more a label area than a polygon; also changing to z13+
heath	grassland			NO CHANGE
hedge			grassland	yep (though new z13+ makes irrelevant)
hospital		x		no, it's own thing
industrial	urban_area			NO CHANGE
land			barren	"land" (no change in min_zoom from 9+)
library			urban_area	yep (though new z13+ makes irrelevant)
meadow	grassland			NO CHANGE
military		x		no, it's own thing
mud	wetland			NO CHANGE
national_park		x		NO CHANGE
natural_forest			forest	no (well, this has low feature count, there's a different bug for it)
natural_park			forest	no (well, this has low feature count, there's a different bug for it)
natural_wood	forest			NO CHANGE
nature_reserve		x		no, it's own thing
naval_base		x		no, it's own thing
orchard	farmland			NO CHANGE
park		x		NO CHANGE
pedestrian			urban_area	yep (though new z13+ makes irrelevant)
petting_zoo			urban_area	yep (though new z13+ makes irrelevant)
picnic_site			grassland	updated (though new z13+ makes irrelevant)
pier			urban_area	yep (though new z13+ makes irrelevant)
pitch			urban_area	yep
place_of_worship			urban_area	yep (though this will make some rural churches odd, but they'll still receive POI correctly)
plant			urban_area	yep
plant_nursery	farmland			yep
playground			urban_area	yep (though new z13+ makes irrelevant)
port			urban_area	yep
port_terminal			urban_area	yep
prison			urban_area	yep (though this will make some rural prisons odd, but they'll still receive POI correctly)
protected_area		x		no – these are more like overlays
quarry	barren			NO CHANGE
railway			urban_area	sure
range			military	okay. Also suggesting z11+ change; related to danger_area. might produce oddness.
recreation_ground		x		no, this is a green area, combined with z12+ change
recreation_track		x		no, this is a green area, combined with z12+ change
residential	urban_area			NO CHANGE
resort		x		no, it's own thing (not many)
rest_area		x		no, it's own thing (not many)
retail	urban_area			NO CHANGE
rock			barren	yep
roller_coaster			urban_area	yep (though new z15+ makes irrelevant)
runway			aerodrome	yep (though new z13+ makes irrelevant)
sand	desert			NO CHANGE
school		x		no, it's own thing (not many, only z12+ but generally z13+)
scree	barren			NO CHANGE
scrub			grassland	yep
service_area			urban_area	yep
shingle	barren			yep
sports_centre		x		no, green area and new z12+ (was 10) makes less problematic
stadium		x		no, green area and very few at low zooms
stone			barren	yep
substation			urban_area	yep
summer_toboggan		x		hard to know what to map to, let's make z13+ only instead
taxiway			aerodrome	yep (though new z13+ makes irrelevant)
theatre			urban_area	yep (though new z13+ makes irrelevant)
theme_park		x		no, it's own thing (few less than 13, but they're important)
tower			urban_area	yep (though new z13+ makes irrelevant)
trail_riding_station		x		yikes (though new z13+ makes irrelevant)
tree_row			forest	this is line geom, so irrelevant?
university		x		NO CHANGE
village_green	urban_area			NO CHANGE
vineyard	farmland			NO CHANGE
wastewater_plant			urban_area	yep (though z12+ in future)
water_park			urban_area	yep (though z13+ in future)
water_slide			urban_area	yep (though z15+ in future)
water_works			urban_area	sure
wetland	wetland			NO CHANGE
wildlife_park		x		no, it's special / there aren't many
winery			farmland	sure (though not many)
winter_sports		x		no, it's special
wood	forest			NO CHANGE
works			urban_area	sure
zoo		x		no, it's special

[nvkelso]

This is working.