Change zoom level and text size for place=hamlet

[jeisenbe]

Fixes #1984

Changes proposed in this pull request:

• Start rendering hamlets at z14 (instead of z15) through z17
• Use a slightly larger text label for hamlets, intermediate between place=quarter and place=neighborhood / locality / farm
• Move place=hamlet to same layer as place=quarter

Explanation:

• In areas where hamlets are common, the map may not display any place names, or too few, at z14
• Mappers sometimes misuse place=village for very small settlements so that they will render sooner. This change will reduce this incentive.
• Hamlets are larger and more important than farms, isolated_dwellings, and "localities", since they are found in rural areas but have more than one or two families, so they should be rendered sooner and with a subtly different text.

Test renderings:

Wales
high latitude
z14 Trefin - current

After

z14 Dobshill - current

After

Sixaloa, Costa Rica
low latitude
z14 current rendering:

After

Syokosimo, Papua Indonesia
low latitude
z14 current

z14 after

Soba, Papua Indonesia
z18 current

z18 after

• There is no need to show these labels on z18 and z19

Also see additional images in #1984 (comment)

[matthijsmelissen]

Start rendering hamlets at z14 (instead of z15) through z17

This would partially revert #1247.

[jeisenbe]

This would revert #1247

That PR moved hamlet to z15 along with neighborhood, isolated_dwelling, farm, and locality (among other changes).

…

On Tue, Jan 8, 2019 at 10:57 PM Matthijs Melissen ***@***.***> wrote: Start rendering hamlets at z14 (instead of z15) through z17 This would revert #1247 <#1247>. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#3626 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AoxshA4SZ2zq6Asfb_l1wM112Lh1UC_hks5vBKPMgaJpZM4Z1fqs> .

[kocio-pl]

In general I like this idea.

[jeisenbe]

In favor of rendering hamlets of z14, also consider the other features that start rendering at this zoom level:

• highway=service (most types, but driveways are at z16)
• highway=path, footway
• highway=pedestrian
• highway=construction (generic construction, plus residential, unclassified, etc)
• building areas
• swimming pool areas
• parking areas
• man_made=cutline, =embankment
• tourism=wilderness_hut, =alpine_hut
• waterway=waterfall, taller than 10m
• man_made=tower, =mast taller than 160m, =telescope with diameter > 60m
• railway=level_crossing
• natural=cape and =bay text labels

It's odd not to show the name label for a hamlet at z14, when the buildings, service and pedestrian roads, footways and parking areas area already shown.

Also, landuse labels (such as landuse=residential, landuse=farmland) already render even sooner than z14, as long as the areas is larger than about 30 by 100 pixels. Many hamlets are smaller than this at z14, but some are large enough that the label will show if they are tagged as landuse=residential with name=*, for example "Simpson cross" in Wales:

z14 after

z14 current rendering

Localities, farms and isolated dwellings can remain at z15 (and perhaps localities should be even later?), because they are often as small as one or two buildings, usually 1/4 or 1/16 the area of a hamlet (so they can be 1 to 2 zoom levels later).

[jeisenbe]

Does anyone want to see more test renderings? Any questions or concerns about rendering hamlets from z14, or about no longer rendering the name label at z18 and z19?

[kocio-pl]

It looks OK for me - the difference in the font size is clear and I think it makes sense to not show the label of the area at every level.

https://www.openstreetmap.org/#map=14/52.0038/21.0371

z14, Before

z14, After

It's also better that they are bigger on z15, so they're different from roads:

z15, Before

z15, After