Aaron Straup Cope thisisaaronland

Existential flags

There are currently (5) existential flags for WOF documents that map to the "standard places response" (SPR) interface. The SPR is meant to be a minimum common response for all services that provide a public interface for accessing WOF documents.

The SPR itself remains to be fully and properly documented.

Existential flags can be used to filter records on ingest. For example the go-whosonfirst-pip-v2 package allows you to filter records to index by one or more existential flags:

https://github.com/whosonfirst/go-whosonfirst-pip-v2/blob/master/app/indexer.go#L98-L175

	#!/bin/sh

	# This assumes that you have installed duckdb and that both /usr/local/data/overture/places and
	# /usr/local/data/overture/places-geojson exist and that the Overture "places" parquet files have
	# been downloaded in to the former. See also: https://github.com/OvertureMaps/data#3-duckdb-sql

	for f in /usr/local/data/overture/places/*
	do
	f=`basename $f`
	echo "process $f"

	$> git clone [email protected]:whosonfirst-data/whosonfirst-data-admin-gb.git /usr/local/data/whosonfirst-data-admin-gb
	$> cd /usr/local/whosonfirst/go-whosonfirst-sqlite-features-index
	$> ./bin/wof-sqlite-index-features -dsn /usr/local/data/gb.db -timings -spatial-tables /usr/local/data/whosonfirst-data-admin-gb

	Then in `cmd/test/main.go`:

	```
	package main

	import (