Presentació OpenStreetMap a Geoinquiets Barcelona

OpenStreetMap

The Free Wiki World Map

Free as in Free Speech

Comunity based

Pareto rules :(

1 Code of Conduct

* 1.1 General

• 1.1.1 Be Considerate
• 1.1.2 Be Respectful
• 1.1.3 Be Collaborative
• 1.1.4 When we disagree, we consult others
• 1.1.5 When we are unsure, we ask for help
• 1.1.6 Step down considerately
• 1.1.7 Respect Copyright and Licenses

2 Additions and modifications

3 Violations and Enforcement

* 3.1 Judging violations

• 3.1.1 Option: Community council
• 3.1.2 Option: OSMF Ministry of Truth Working Group

* 3.2 Performing a ban

* 3.3 Misconduct across other channels

I define OSM community as good will but chaotic

Data - Information

http://wiki.openstreetmap.org

forget all GIS data types

Areas are not separate elements, they are merely closed ways that represent an area

How we glue all geo-types?

Tags

Infrastructure

www?

is a regular web server that runs Ruby on Rails. It is FOSS, so you can build your own OSM-like server

db?

PostgreSQL + PostGIS

easy one :)

planet?

as the name suggests is a DB dump for the whole planet.

• weekly full planet dump
• daily - hourly - minutely diffs

tile?

standards? WMS? why? :(

mapnik renderer + really fast!! renderer daemon + apache module

• cache
• on demand rendering
• expires
• modified tiles

http://a.tile.openstreetmap.org/17/66327/48958.png

API?

is RESTful web service. All payloads are in XML & UTF-8 encoding. Write requests need authentication (HTTP Basic or OAuth)

now in v 0.6

capabilities

changeset

bounding-box

history

version

<osm version="0.6" generator="OpenStreetMap server">

<api>

<version minimum="0.6" maximum="0.6"/>

<area maximum="0.25"/>

<tracepoints per_page="5000"/>

<waynodes maximum="2000"/>

<changesets maximum_elements="50000"/>

<timeout seconds="300"/>

</api>

</osm>

• any edit must reference a changeset
• non atomic
• can be rollbacked and reverted

http://api.openstreetmap.org/api/0.6/map?bbox=l,b,r,t

Exhaustive version control for

each element.

XAPI?

X = eXtended predicate filters: [amenity=hospital]

[bbox=t,l,b,r]

/node[not(way)]

Nominatim?

Search engine + Reverse geocoder web service.

TaH?

Tiles at Home - distributed renderer with osmarender

GPX?

users can uplod/download gps traces, so users can hanve hints when no imaginery is available

Tools

Apps!

on Jan 24rd 2011

Map Features

Number of users 350.256

Number of uploaded GPS points 2.149.657.482

Number of nodes 945.435.752

Number of ways 79.727.545

Number of relations 838.691

OpenStreetBugs

geofabrik

OpenCycleMap

Trails

PublicTransport

iPhone

Android

...

46 apps

Node

Relation

Way

Potlatch

JOSM

Merkaator

Osmosis

osm2pgsql

osm2pgr

mapnik

mod_tile

rails_port

ogr2osm

shp2osm

...

A node is the basic element of the OSM scheme. Nodes consist of latitude and longitude

46 apps

A way is an ordered interconnection of at least 2 and at most 2000 nodes (as of API v0.6) that describe a linear feature such as a street, or similar.

A relation can group other elements together, nodes, ways, and maybe even other relations. Elements are 'members' of the relation, and each membership has a 'role'

Carril Bici

Camí

Pas de vianants

Parc

uncontrolled

zebra

crossing

crossing

crossing_ref

highway

crossing

highway

traffic_signals

traffic_signals

addr:city

addr:country

addr:housenumber

addr:postcode

addr:street

Terrassa

ES

7

08225

Carrer Sabadell

bench

highway

name

shelter

tactile_paving

Relation id=...

yes

bus_stop

Arenys de Mar

yes

yes

1203234 version=5 VT [node ...

turn restrictions

name

shop

Forn Casa Nova

bakery

Carrer

layer=0

waterway=river

name=Riera del Palau

Edificis

ref=B-40

highway=motorway

name=Quart Cinturó

layer=0

oneway=yes

maxspeed=80

lanes=2

Zona de jocs

infantils

More in Map Features

Plaça

shared ways

routes

http://api.openstreetmap.org/api/0.6/node/933346497

<osm version="0.6" generator="OpenStreetMap server">

<node id="933346497" lat="41.5827339" lon="2.0134288" version="1" changeset="5928981" user="Jaume Figueras" uid="55987" visible="true" timestamp="2010-10-01T15:46:00Z">

<tag k="name" v="Arenys de Mar"/>

<tag k="tactile_paving" v="yes"/>

<tag k="highway" v="bus_stop"/>

<tag k="bench" v="yes"/>

<tag k="shelter" v="yes"/>

</node>

</osm>

http://api.openstreetmap.org/api/0.6/node/933346497

http://api.openstreetmap.org/api/0.6/way/26341761/history

<osm version="0.6" generator="OpenStreetMap server">

<way id="61742290" visible="true" timestamp="2010-09-29T21:15:19Z" version="2" changeset="5915701" user="Jaume Figueras" uid="55987">

<nd ref="302015269"/>

<nd ref="411038585"/>

<nd ref="930868180"/>

<nd ref="302015292"/>

<nd ref="411038587"/>

<nd ref="411038589"/>

<nd ref="301720003"/>

<nd ref="288598744"/>

<nd ref="301720004"/>

<tag k="highway" v="residential"/>

<tag k="layer" v="0"/>

<tag k="maxspeed" v="50"/>

<tag k="name" v="Avinguda de Lacetània"/>

<tag k="surface" v="paved"/>

</way>

</osm>

<osm version="0.6" generator="OpenStreetMap server">

<way id="26341761" visible="true" timestamp="2008-08-16T23:20:53Z" user="Jaume Figueras" uid="55987" version="1" changeset="287423">

<nd ref="282873935"/>

<nd ref="288595138"/>

<nd ref="288595139"/>

<nd ref="288595140"/>

<tag k="highway" v="secondary"/>

<tag k="lanes" v="2"/>

<tag k="layer" v="0"/>

<tag k="maxspeed" v="50"/>

<tag k="name" v="Avinguda de Béjar"/>

<tag k="oneway" v="yes"/>

</way>

−

<way id="26341761" visible="true" timestamp="2008-10-03T09:27:21Z" user="Jaume Figueras" uid="55987" version="2" changeset="50174">

<nd ref="282873935"/>

<nd ref="288595138"/>

<nd ref="288595139"/>

<nd ref="288595140"/>

<nd ref="301720015"/>

<tag k="highway" v="secondary"/>

<tag k="lanes" v="2"/>

<tag k="layer" v="0"/>

<tag k="maxspeed" v="50"/>

<tag k="name" v="Avinguda de Béjar"/>

<tag k="oneway" v="yes"/>

</way>

−

<way id="26341761" visible="true" timestamp="2008-10-04T22:05:12Z" user="Jaume Figueras" uid="55987" version="3" changeset="67776">

<nd ref="282873935"/>

<nd ref="288595138"/>

<nd ref="302113758"/>

<nd ref="302113771"/>

<nd ref="301720015"/>

<nd ref="302015354"/>

<nd ref="302015357"/>

<nd ref="302113955"/>

<nd ref="302113978"/>

<nd ref="302113982"/>

<nd ref="302015186"/>

<tag k="highway" v="secondary"/>

<tag k="lanes" v="2"/>

<tag k="layer" v="0"/>

<tag k="maxspeed" v="50"/>

<tag k="name" v="Avinguda de Béjar"/>

<tag k="oneway" v="yes"/>

</way>

.....

</osm>