OpenStreetMapThe power of crowd-sourcing

Why?

• Too many legal and technical restrictions on existing maps

• Often inaccurate or incomplete• Errors fixed slowly• You only get what the cartographers dictate

How?

Who?

Who (lots)

Getting data into the map

Getting data into the map (2)

The result

Improving the map

So you’ve got a digital map – so what?

Accessing the data

Results of government co-operation

Results of manual surveying

Detail available

For cyclists

More for cyclists

Topo maps

Useful stuff

More useful stuff

Clever stuff

More clever stuff

We map where no-one else wants to

What next?

• More coverage• More accuracy• More mappers!• Better tools• More innovative uses• More data released from government agencies• Visit www.mappa-mercia.org for local info• Visit www.openstreemap.org for global info