Free & Open Source Software (FOSS)

• Permissive - providing with few restrictions

• Protective - obligation to share improvements

Two Types of Licenses

"We share our work with you,

You share your work with us

and we all benefit."

Why Now?

Commons-Based Peer Production

Tools

Bandwidth

Interest

Using internet to build rich valuable collections of knowledge & products

Secondary Results

Mapbox

Proprietary Software Licenses

Esri

Open Source GIS

Desktop

Database

Webmap Platform

GDB

GeoJSON;  Shape Files

Geopackages, WMS, WFS

PostGIS

PostgresSQL

Mapbox

Open Source GIS (FOSS4G)

Desktop

Cross Platform Software

• v 1.0 Released in 2009, v 3.10 2020
• 48 Languages translated
• Currently 426 Plug-ins (software component that add specific feature)

Looks Familiar!

Vector Data

Format Types

Model Builder

QGIS Map Showcase 

QGIS is ready for Prime Time

• User friendly Install and very stable
• Large community support
• Commercial support available

FOSS4G

Relational Database (RDBMS)

PostGIS

PostgresSQL

Find out why you should use postgis.

FOSS4G

Web map Platform

Mapbox

Carto

JS

Library

Example 1- Vector Tiles

Microsoft Building Footprint Data from Machine Learning

WA State: 3 Million Building Footprint ~ 675 MB in GeoJSON format

Tippecanoe

WA State: 3 Million Building Footprint ~ 675 MB in GeoJSON format

Vector Tiles and Web Mapping & Seattle Maptime

Example  2 - Vector tile server

5  County Parcel Data

1.2 Million Polygon

730 MB Shape files

Example  3 - WA State Parcel Viewer

3.1 Million Polygon

3.3 GB Shape files

38 Counties

5.7 GB GeoJSON

1.44 GB mbtiles

"First do it, then do it right, then do it better."

Credit: Addy Osmani

Doing is Learning, but...

Doing with mistakes?

It's still learning!

A

B

L

Always

Be

Learning

C

Tobin Bradley, Mecklenburg County, NC

END

for now

Thank You

peter.keum@kingcounty.gov