SF Building Mapathon

Maptime SF/OAK

Mapping San Francisco Buildings

March 14, 2017

This presentation: github.com/bdon/maptime_sf_buildings

Why map buildings?

Image: parkjisun, The Noun Project

Location context

2014 Gaza Strip mapping - Humanitarian OpenStreetMap Team (HOT)

Urban planning, GIS analysis

Why bother? Isn't Google Maps/Apple Maps good enough?

OpenStreetMap is open data. you are free to use it for any purpose as long as you credit OpenStreetMap and its contributors.
Licensed under Open database license (ODbL)

How can we LOOK at buildings (2D and 3D) in OSM?

OSM 3D renderers:

Warsaw National Stadium on OSM
Credit: Wistula - Own work, File:Wał_MiedzeszyńskiNationalStadium.JPG

SF City Hall
Credit: Dllu - Own work, File:San_Francisco_City_Hall_as_seen_from_100_Van_Ness_at_dusk.jpg

Let's work together to improve:
San Francisco 3D data

Sources for reliable map information:

mapping by hand
remote mapping
data imports

Satellite imagery (Bing)
Street imagery (Mapillary)
Estimating building heights

Public datasets on data.sfgov.org

e.g. https://data.sfgov.org/Housing-and-Buildings/Building-Footprints/6p33-sdua

The License

Don't refer to other maps
Bing provides satellite imagery for OSM
Your own photos
Mapillary license

Let's make an edit!

Nodes
Ways
Tags e.g. name="Takuya Japanese Style Hot Dog and Bowl"

Communicating about OSM

OSM Wiki
Mailing lists
Mapping parties

Coordinating Mappers

OSM Tasking Manager: tasks.OSM.us, tasks.HOTOSM.org
OSM Wiki Key:building

Leaving a paper trail:

Changeset comments
Changeset data source
Usernames