Introduction to contributing to OSM mapping

1. Introduc)on
to
OpenStreetMap
(OSM)
Mayra
Zurbarán
With
support
from
GEOlab
and
PoliMappers
from
Politecnico
di
Milano

2. OpenStreetMap
(OSM)
–
What
is
it?
• The
most
popular
project
of
Volunteered
Geographic
InformaAon
(VGI)
→ Founded
by
Steve
Coast
in
UK
in
2004:
hNp://wiki.openstreetmap.org/wiki/History_of_OpenStreetMap
→ Free,
editable
vector
map
of
the
whole
world
built
by
volunteers:
hNp://wiki.openstreetmap.org/wiki/About_OpenStreetMap
h9p://openstreetmap.org

3. OpenStreetMap
(OSM)
–
How
many
users?
• (Jan
2017)
there
are
more
than
3
million
registered
users:
hNp://wiki.openstreetmap.org/wiki/Stats

4. OpenStreetMap
(OSM)
–
License
• OpenStreetMap
is
an
openly-­‐licensed
database!
→ OSM
was
born
from
the
evidence
that
many
geodata
are
proprietary
or
copyrighted,
i.e.
you
cannot
freely
use
them
(e.g.
Google
Maps)
hNp://wiki.openstreetmap.org/wiki/Why_OpenStreetMap%3F
→ OSM
is
licensed
under
the
Open
Database
License
(ODbL)
by
the
OpenStreetMap
FoundaAon
(OSMF)
hNp://opendatacommons.org/licenses/odbl/summary

5. OpenStreetMap
(OSM)
–
How
to
contribute
• Everything
you
need
to
contribute
to
OSM
is
to
create
an
account
from:
hNp://www.openstreetmap.org
• EdiAng
OSM?
→ iD:
a
simple,
easy-­‐to-­‐use
online
editor
–
suitable
for
beginners
hNp://wiki.openstreetmap.org/wiki/ID
→ JOSM:
a
more
powerful,
offline
editor
–
suitable
for
experienced
users
hNps://josm.openstreetmap.de
→ Vespucci:
an
Android
editor
–
suitable
for
fast
and
efficient
field
survey
hNp://vespucci.io
→ Many
others!
–
Full
list
at:
hNp://wiki.openstreetmap.org/wiki/Editors

6. OpenStreetMap
(OSM)
–
The
data
model
• OSM
objects
are
the
combinaAon
of
geometries
and
tags.
• There
are
3
geometries
(hNp://wiki.openstreetmap.org/wiki/Elements)
:
→ NODE:
a
single
point
→ WAY:
an
ordered
list
of
nodes
–
Includes
polylines
and
polygons
→ RELATION:
a
logic
group
of
nodes,
polylines
&
polygons

7. OpenStreetMap
(OSM)
–
The
data
model
• OSM
objects
are
the
combinaAon
of
geometries
and
tags.
• Tags
are
the
object
aNributes,
and
are
composed
of
a
key
and
a
value:
→ Example:
a
building
(polygon)
which
is
used
as
a
hotel
has
the
tag
→ An
object
must
have
at
least
one
tag,
but
can
have
any
number
of
tags
→ The
reference
set
of
OSM
tags
(a
“must”
for
any
OSM
user)
is
available
at
hNp://wiki.openstreetmap.org/wiki/Map_Features
building
=
hotel

8. OpenStreetMap
(OSM)
–
The
data
model
• Tags
are
the
object
aNributes,
and
are
composed
of
a
key
and
a
value:

9. OpenStreetMap
(OSM)
–
The
data
model
• Tags
are
the
object
aNributes,
and
are
composed
of
a
key
and
a
value
-­‐
RelaAons:

10. OpenStreetMap
(OSM)
–
It’s
simple!
10-­‐year
old
kids
can
do
it!
Mapathon
at
POLIMI
with
200+
school
kids

11. The
HOT
Tasking
Manager
• The
tool
designed
for
managing
collaboraAve
humanitarian
mapping
in
HOT
and
Missing
Maps
projects
(hNp://tasks.hotosm.org):
→ The
areas
to
be
mapped
are
subdivided
into
small
sub-­‐areas,
that
can
be
completed
rapidly
–
users
map
independently
from
each
other
and
in
different
areas,
to
avoid
conflicts!

12. Task
–
#2631
• Missing
Maps:
Zambia
Malaria
EliminaAon
46
→ hNp://tasks.hotosm.org/project/2631
Help
create
an
UNINORTE
#hashtag!
• Aper
Mapping:
QuanAfying
the
mapping
done
using
this
great
tool
from
Pascal
Neis:
hNp://resultmaps.neis-­‐one.org/osm-­‐changesets

13. State
of
the
map
–
Ramani
Huria
Mapping
for
flood
resilience
in
Tanzania:
hNp://ramanihuria.org/
Atlas
available
at:
hNps://issuu.com/ramanihuria/docs/ramani_huria_atlas_final

14. Gracias!
–
let’s
map!
OSM
user:
mazucci
TwiNer
user:
@mazucci