SnoCo GIS User Group

Evertte, WA

Peter Keum: peter.keum@kingcounty.gov

@pkeum

pkgeo.com

Jan 16th, 2020

FOSS4G

Free and Open Source Software for Geospatial

After

Before

But Not THIS

Text

Text

Text

CUGOS

CUGOS

Cascadia Users of Geospatial Open Source

(Community)

170 members on cugos.slack.com 

1. Free & Open Source Software  (FOSS)

2. Free Open Source (OS) GIS

1. Free & Open Source Software (FOSS)

• Free to run it
• Free to modify it
• Free to share it
• Free to share your modification

The Cathedral and the Bazaar

Open Community

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

2. Free Open Source GIS Tools

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

Flexible

Easy

Homogenous systems and single vendor strategies can be convenient BUT comes with trade-off. Lack of flexibility for fast adoption 

VS

(GIS Professionals)

"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

CUGOS

Community

CUGOS

END

for now

Thank You

peter.keum@kingcounty.gov