# poi

[Points of interests](http://wiki.openstreetmap.org/wiki/Points_of_interest) containing
a of a variety of OpenStreetMap tags. Mostly contains amenities, sport, shop and tourist POIs.

## Fields

- **class**: More general classes of POIs. If there is no more general `class` for the `subclass`
this field will contain the same value as `subclass`.
But for example for schools you only need to style the class `school` to filter the subclasses `school`
and `kindergarten`. Or use the class `shop` to style all shops.
- **name_en**: The english `name:en` value if available.
- **name**: The OSM [`name`](http://wiki.openstreetmap.org/wiki/Key:name) value of the POI.
- **rank**: The POIs are ranked ascending according to their importance within a grid. The `rank` value shows the
local relative importance of a POI within it's cell in the grid. This can be used to reduce label density at z14.
Since all POIs already need to be contained at `z14` you can use `less than rank=10` epxression to limit
POIs. At some point like z17 you can show all POIs.
- **subclass**: Original value of either the
[`amenity`](http://wiki.openstreetmap.org/wiki/Key:amenity),
[`leisure`](http://wiki.openstreetmap.org/wiki/Key:leisure),
[`landuse`](http://wiki.openstreetmap.org/wiki/Key:landuse),
[`sport`](http://wiki.openstreetmap.org/wiki/Key:sport),
[`tourism`](http://wiki.openstreetmap.org/wiki/Key:tourism)
or [`shop`](http://wiki.openstreetmap.org/wiki/Key:shop)
tag.  Use this to do more precise styling.

## Mapping

![](mapping.png)