osm-poi-db/README.md

Extract POIs from OSM PBFs and put them into LevelDB, ready for nearby query

# OpenStreetMap Points of Interest Database

## Synopsis

Not sure if this is a common method for geospatial databases or not,
this stores nodes and keys by their average coordinate encoded as
GeoHash for query by location.

## Importing an OSM Protocol Buffers Dump

I recommend pipeview for monitoring progress:
```
pv -per < region-latest.osm.pbf | node osm2leveldb.js
```

## Query

By latitude/longitude + maximum extend:
```js
var AreaStream = require('../area_stream');
new AreaStream({
    lat: 51,
    lon: 13,
    extent: 5000
}).pipe(myConsumer);
```