Vector tiles should filter place points by zoom level

[1ec5]

The place_points layer in the vector tiles includes every place=* point at every zoom level:

https://github.com/OpenHistoricalMap/ohm-deploy/blob/446acd16acffc03634c369e743934fea2bea8264/images/tiler-server/config/providers/place_points.toml#L20-L23

This leads to a glut of data that never gets rendered:

As a result, some tiles weigh a lot and take an inordinate amount of time to load. For example, 4/8/5, which covers Central Europe at zoom level 4, weighs 7.11 megabytes and sometimes takes upwards of a minute to load.

We should drastically reduce the number of place points in this layer at low and mid zooms. In general, place points should only appear in the tiles at zoom levels where a style would show them. For example, the Historical style only labels place=hamlet at zoom levels 11 and above. Every style is a little different for stylistic reasons, so in some cases it may be a good idea to include a class of places one or two zoom levels before the Historical style would label it. But z1 is many zoom levels too early.

Once #801 is implemented, we should also be able to omit place points representing areas that are way too small to be labeled. But this is a much lower priority than filtering out place classifications that stylesheets ignore as a rule.

[Rub21]

I am going to work on this. @vknoppkewetzel, do you have a sense of which place points should be rendered at which zoom level? It would be better to use that for filtering according to the current styles

[vknoppkewetzel]

@Rub21 Let me take a look and gather that info for you 🙏

[vknoppkewetzel]

Hey @Rub21 here is what is getting pulled in at different zoom ranges in the current style main.js

https://docs.google.com/spreadsheets/d/1oz5_qVrmxisgTPJC1fBTOlSGiylCNC4JiUXTB_qVrUA/edit?usp=sharing

Note, this doesn't account for anything that is not currently pulled into the style.

After taking a look at the above and making adjustments based on those zoom ranges, is it possible to flag what attributes that we not styling (yet)? We can then take a look at those attributes and discuss what zoom ranges are ideal for their styling and get back to you for those as well

[Rub21]

I have filtered the layer place_points according to the styles filtered in the spreadsheet. It should not break anything.” https://vtiles.staging.openhistoricalmap.org/#1.27/26.1/-28.4

[1ec5]

Did we used to label place=ocean and place=sea? A mapper on Discord notes that oceans and seas have gone missing from the map.

[Rub21]

I have added the type=ocean and sea, and others that was not been considered according to the list of places https://gist.github.com/Rub21/86fbf65f687b02c886cc1625b5c543c6

[Rub21]

Done, closing the ticket!