Web Mapping with Vector Tiles using Open Source Tools
May 21, 2018
WA URISA 2018, Olympia, WA
Peter Keum - WTD GIS Specialist, GISP
@pkeum
CUGOS
Web Mapping with Vector Tiles using Open Source Tools
Free to run it
Free to modify it
Free to share it
Free to share your modification
Why Now?
Commons-based peer production
Tools
Bandwidth
Interest
Commons-based peer production (CBPP)
Yochai Benkler (2002), Harvard Law Professor
-
New model of socio-economic production
-
Collaborative efforts based on sharing information
-
Large number of people working cooperatively usually over internet
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People participate because they are passionate about particular thing and revel in creating something new and better
Using internet to build rich valuable collections of knowledge & product
Flexible
Easy
Homogenous systems and single vendor strategies can be convenient BUT comes with trade-off. Lack of flexibility for fast adoption
VS
FOSS4G: Free and Open Source Software for Geospatial
GIS
Companies are using maps not just as nice features but to drive revenue as core components of their offering. Maps are no longer just a good way to visualize content, they are core to competitive advantage.
Companies are thinking more creatively about how to combine location with outside content and internal business data to differentiate products
Raster
- Image format(png, jpg)
- Styled before loading
- Specific zoom levels
Vector
- Protobuf format, includes geo data
- Styled after loading
- Unlimited zoom level
Map Tiles
Vector Tiles & Web Mapping
Raster Tiles
- Don't Scale
- Hard to change
- Just Pictures, not data
ArcMap
ArcGIS Server
Common Enterprise GIS Workflow
Vector Tiles
Packet of geographic data packaged into pre-defined, roughly-square shape tiles which vector data has been clipped to the boundaries of each tile... benefits of pre-rendered raster map tiles with vector map data"
From Wikipedia, the free encyclopedia
Title Text
Title Text
Title Text
Vector Tiles
Similar to raster tile except it returns vector representation of feature in the tile.
- Scales
- Easy to change
- Smart data
Vector Tiles
language-neutral, platform-neutral extensible mechanism for encoding structred data"
Similar to xml except smaller, faster and simpler
.pbf or .mvt (mapbox vector tile)
Smart Data!
Easy To Change!
Raster vs Vector Tiles
Power of Vector Tiles
Five County Parcels Polygons - Demo
- King, Pierce, Snohomish, Island, Kitsap
- 1.2 million polygons
- shp 730 MB -> 90 MB vector tiles
Quick Demo 1
WHOA!
Power of Vector Tiles
Quick Demo 2
WHOA!!
Another new new thing???
Workshop Workflow
Docker Container
(1) Preparing Data
Geospatial Data Abstraction Library
Command line utilies for data processing and data translation
Convert shape file to GeoJson
(2) Creating Vector Tiles
Command-line Utility tool to convert custom data to vector tiles
GeoJSON --> *.mbtiles
(3) Rendering Vector Tiles
Open Source Vector Tile server with options
(4) Styling Vector Tiles
Free and Open Source visual style editor for designer and developers
- Can Run locally
Commercial visual style editor for designer and developers & so much more...
CUGOS
Cascadia
Users
of
Geospatial
Open
Source
"First do it, then do it right, then do it better."
Doing is Learning, but...
Doing with mistakes?
It's still learning!
