OpenIndoor

OpenIndoor transforms and adds value to indoor data available on OpenStreetMap. The result of this is a web-based application that provides indoor navigation help to non-technical users and allows mappers to validate their work before uploading them on OSM.

Website: https://app.openindoor.io (Timing out as of 2024-10, since 2023-11)

git repo: https://github.com/open-indoor/openindoor6

This documentation provides detailed information of all the OSM indoor data tags that are rendered and how they are rendered in the OpenIndoor app. With this approach, it will be easy for users to understand what is rendered with detailed description and be useful for technical personnel to know the technology adopted for the rendering.

Summary of what is rendered

Major Elements

Tag	Description	Element	Rendering	Screenshot
indoor=room	A space surrounded by walls	Area	Walls Floor color depends on the room type
indoor=corridor	Unwalled connecting passage	Area	No walls Ground color = white (#ffffffff)
indoor=area	A space  without walls	Area	No walls Ground color = white (#ffffffff)
access=no		Area	Room/area/corridor filled

Rooms

Tag	Description	Element	Rendering	Screenshot
room=shop	A room for commercial activities such as exchange of products or/and services for money	Area	Ground color = light yellow (#ffffebff) Icon depends on type of shop
room=elevator	A room used by an elevator to carry passengers at different floor levels. See also highway=elevator	Area	Ground color = light purple (#e8dce7ff) Icon : elevator_64
room=entrance	The first room of a building after passing the main entrance, if any.	Area	Walls Ground color = white (#ffffffff)
room=office	An office room. Use office=* on the whole or part of the building	Area	Ground color = light grey (#f2efe9ff)
room=class	A classroom, where a reduced amount of students can learn and work in groups	Area	Ground color = light grey (#f2efe9ff)
room=corridor	A corridor, see also indoor=corridor	Area	Ground color = white (#ffffffff)
room=stairs	A staircase, a room containing stairs, combine with highway=steps for routing	Area	Ground color = light purple (#e8dce7ff) Icon : stairs_64
room=toilet	A room containing one toilet only	Area	Ground color = light blue (#dcdcebff) Icon : toilets_64
room=waiting	A room, usually with something to sit on, where people wait	Area	Ground color = light grey (#f2e9eff) Icon : waiting_64
room=reception	A room where a receptionist employed by an organisation receives or greet any visitors, patients, or clients and answer telephone calls	Area	Ground color = light blue (#dcdcebff) Icon : reception_64
room=storage		Area	Ground color = light grey (#f2efe9ff) Icon : ?
room=nursery	A facility where some nurses may receive their patients. Prefer healthcare=nurse.	Area	Ground color = light red (#ffc8beff) Icon : ?

Amenities

Tag	Description	Element	Rendering	Screenshot
amenity=restaurant	Restaurant. Can be combined with cuisine=* and diet=*	Area	Ground color = light orange (#f4e6ddff) Icon : restaurant_64
amenity=toilets	Public toilets (might require a fee)	Area	Ground color = light blue (#dcdcebff) Icon : toilets_64
amenity=pharmacy	Pharmacy: a shop where a pharmacist sells medications Combine with dispensing=yes for availability of prescription-only medications	Area	Ground color = light red (#ffc8beff) Icon : pharmacy_64
amenity=place_of_worship	A church, mosque, or temple, etc. Note that you also need religion=*, usually denomination=*, and preferably name=*	Area
amenity=post_office	Post office building with postal services	Area	Ground color = light yellow (#ffffebff Icon : post_office_64
amenity=left_luggage	Building that stores lost items and allows owners to claim them	Area	Ground color = light blue (#dcdcebff) Icon : left_luggage_64

Highways

Tag	Description	Element	Rendering	Screenshot
highway=footway	Used for mapping minor pathways which are used mainly or exclusively by pedestrians.	Way	Red dotted line.
highway=steps	For flights of steps (stairs) on footways.	Way	Large red dotted line
highway=steps conveying=yes	A moving staircase carrying people between floors of a building.	Way	Red bold plain line

3D Objects

Tag	Description	Element	Rendering	Screenshot
door=yes	A generic door. Use only if you don't know the kind of door or if it doesn't fit in another value.	Node	Rectangle door Default width = 0,90m
door=hinged	The traditional swinging door	Node`	Rectangle door Default width = 0,90m
door=sliding	A sliding door	Node	Rectangle door Default width = ?
door=revolving	A revolving door	Node	Door shape ? Default width = ?
door=folding	A folding door	Node	Rectangle door Default width = ?
door=trapdoor	A trapdoor	Node	Square 2D door on the floor ? Default width = ?
door=overhead	A garage door, mostly rolling from overhead. Used mainly for vehicles.	Node	Rectangle door Default width = ?
door=loading_truck	The door for a loading dock, mostly an overhead door. Usually not at the same level on the inside and outside, as they provide access to an HGV's load floor.	Node	Rectangle door Default width = ? Level = ?
door=no	If the door itself is removed or the entrance is simply a hole in the wall	Node	Transparent door Default width = 0,90m
barrier=turnstile	A turnstile is used to allow one person to pass at a time	Node	3D object Icon : turnstile_64
amenity=vending_machine		Node	3D object (vending machine)
vending=parcel_pickup	A vending-type machine allowing parcels to be received by their addressee	Node
amenity=reception_desk		Node/Area	3D object (desk) Icon : reception_64
amenity=luggage_locker		Node	3D object (lockers) Icon : luggage_locker_64
amenity=parcel_lockers	a machine with lockers for picking-up parcels	Node

Technical info on rendering

Rendering details

Here is how OpenIndoor app transforms OSM data before last step of rendering in MapLibre:

Walls

Input

indoor=room / OSM way

Properties and geometry transformations

OSM to geojson

OSM ways are converted to Geojson LineString.

Bufferization

We use turfjs buffer function to generate a polygon around the LineString.

IMDF compliance

We add IMDF key/value feature_type="unit".

Rendering

We apply a maplibre "extrusion" rendering (3m height by default) on key/value conditions:

• feature_type="unit"
• indoor="room"

Doors

Input

indoor=door / OSM node

Properties and geometry transformations

OSM to geojson

OSM node is converted to Geojson Point.

Bufferization

We create a circle around the point relying on door width.

Sometimes, OSM "width" key is defined, or 0.90cm by default.

Wall hole

To let space for the door, we cut the existing walls using turfjs difference function.

room.geometry = turf.difference(room, door_circle).geometry

Door birth

To build the door, we extract the intersection of wall and circle around door point.

new_door.geometry = turf.intersect(room, door_circle).geometry;

IMDF compliance

We add IMDF key/value feature_type="door".

See https://docs.ogc.org/cs/20-094/Categories/index.html#door

Rendering

We apply a maplibre "extrusion" rendering (3m height by default) on key/value conditions:

• feature_type="door"
• indoor="door"

Footway

Input

highway=steps / OSM way

Properties and geometry transformations

OSM to geojson

OSM way is converted to Geojson LineString.

Rendering

We apply a maplibre "line" rendering (10 pixel width) on key/value conditions:

• highway="steps" or
• highway="footway"

Rendering summary

Tags/properties / Geometry	Rendering	Conversion to geojson	Transformation	IMDF	maplibre rendering	Interaction	Screenshot
indoor=room OSM type=way	Wall	LineString	bufferization + door buffer difference	feature_type=unit	type: extrusion	info pop-up
	Floor	Polygon	none		type: fill color: depending on shop / amenity	info pop-up
	Anchor	none	centroïd + bufferization	feature_type=anchor	type: fill	info pop-up
	Anchor	none	centroïd		type: symbol (text + icon)	info pop-up
indoor=corridor OSM type=way	Floor	Polygon	none		type: fill	info pop-up
indoor=area OSM type=way	Floor	Polygon	none		type: fill	info pop-up
indoor=door OSM type=node	Door	none	buffer + wall intersection	feature_type=door	type: extrusion	info pop-up
highway=footway OSM type=way	Footway	LineString			type: coloured line	info pop-up + navigation
highway=steps	Staircase	LineString	none		type: coloured line dash: [2, 2]	info pop-up + level change
highway=steps conveying=yes	Escalator	LineString	none		type: coloured line	info pop-up + level change
room=elevator	Elevator					info pop-up + level change