The document outlines a workshop led by Prof. Stefan Keller focused on creating and sharing thematic maps using various online and free tools, including TileMill and CartoCSS. It covers the basics of thematic mapping, data collection, and publishing web maps, as well as discusses data access and formats. Participants are encouraged to engage hands-on with their own data during the session to create unique maps.

1. Come with an idea - go home with
a web map: Tools for sharing
maps and vector data
Prof. Stefan Keller

2. Tools for sharing maps and
vector data
Programme:
1. Basics of thematic mapping and geovisualization
2. From the idea and collection of data to the
making, publishing and sharing of maps
3. Discussion of some free online map making and
map publishing tools
4. About data access webservices (background
maps) and data formats
5. Excursus about TileMill and CartoCSS
6. Design and publish your own web map (using
TileMill)
7. Tools to extract and transform (i.e. convert)
vector data
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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3. Organization
 Who are we?
 Prof. Stefan Keller
 Tobias Schmitz
 Who are you?
 Name, Education, Organization
 Infrastructure/Prerequisites:





Two on one desktop (or your laptop w/Wifi)
A mail account
No programming
Report „Geo-Visualisierungs-Tools“
Register an account at MapBox.com now!
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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4. This workshop
 Come with an idea - go home with a web map:
Tools for sharing maps and vector data
 in 7 steps => see programme
 Goals of this workshop:
 Refresh the basics of thematic mapping
 Learn how complex geoviz. still is
 Learn to know some online, free tools
 See demo with own data in action
 Attempt to sketch a solution for own idea
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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5. «Come with an idea…“»
 Based on
 Base map CH: Gemeinden, Kantone, wichtige
Orte (‘workshop compilation’)
 ‘Hektarraster’, see http://bit.ly/1cwn3YY
 OpenData, see http://opendata.admin.ch
– Base data: Gemeindegrenzen (polygons)
– Base data: PLZ/Zipcodes (polygons, 300 MB!)
– Zweitwohnungen nach Gemeinden
– Föhnindex nach PLZ
 Either
 follow our lab exercise
 or tell us now!
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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6. Thoughts on geosharing…
 What do you expect…? It‘s only 90 min.!
 … sharing is good 
 We all want to share our
 intentions => communication
 knowhow => foursquare, stackoverflow
 data => open data, gov.data/crowsourcing
 Software => open source
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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7. 1 | Thematic mapping and
geovisualization
 Cartography, (Neo-)Geography, Visualization,
Arts Design, Data Driven Journalism
 Thematic Maps, Infographics
 Most common features of thematic maps:
 map (not graphics)
 online (not printed)
 interactive (not static)
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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8. 1 | Characteristics of
Geospatial Data (Geodata)
 complex nature/structure/naming
 different formats
 difficult to access
 big data
 difficult to render
 point, polyline, polygon and text
symbols/signatures/styles
 generalization problem
– different content on different zoom levels
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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9. 1 | Thematic Mapping and
Geovisualization
 Topographic Maps
 Base maps
– OpenStreetMap
– Google Map
 Thematic Maps





Choropleth Map
Proportional or Graduated Symbols
Dot Map
Isarthmic or Contour Map
Dasymetric Mapping
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10. 1 | Base Maps
OpenEcoMap
OSM Mapnik
Hike & Bike
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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11. 1 | Thematic Map Examples
NZZ Swiss Maps - Interactive Things
http://work.interactivethings.com/nzz-swiss-maps/
repository (TopoJSON, GeoJSON from publicly available
(but difficult to access) swisstopo
geodata.https://github.com/interactivethings/swissmaps
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12. 1 | Interactive Maps !=
Google Maps
 Google Maps , provide out-of-the-box
 DB (fusion table) / spread sheet (incl.
geocoding)
 API
 Base Maps
 There are alternatives
 web solutions, out-of-the-box: ArcGIS Online
and MapBox („challengers“)…
 base maps, out-of-the-box: tiles
 other kinds of base maps: customized, part of
own geovisualization config. (see in 4)
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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13. 1 | Tips about sharing maps
and charts
 "Many Eyes“: www-
958.ibm.com/software/data/cognos/manyeye
s/
 DocumentCloud:
www.documentcloud.org/
 Tableau Public:
http://www.tableausoftware.com/public/
 „Storytelling with maps“ (by ESRI):
http://storymaps.esri.com/
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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14. 2 | From the idea and collection
of data to the making, publishing
and sharing of maps
 Tasks




Inception: invent, combine
Design: collect, make
Publishing (web): …
Sharing (web): tag it for discovery
 Tips:
 The Data Journalism Handbook
 Handbook of Geojournalism
 Geovisualization sources
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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15. Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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16. 2 | Most difficult tasks…
 Goal: Matching thematic data with geospatial data
(coordinates)
=> „Join“ based on
 Coordinates => within/overlap (overlay,
buffer), nearby
 Postal Adress => Geocoding => Coordinates
 Name => e.g. Community Name, BfS Nr., Zip
Code
 Tools
 Online Tools: Fusion Tables, ArcGIS Online
(other?)
 Desktop Tools SQLite, GIS (QGIS)
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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17. 3 | Free Online Geovis. Tools
 Report „Geo-Visualisierungs-Tools“ by
Geometa Lab HSR and GeoGR.ch
 mostly online, freely accessible tools
 some open source
 Scenario
 Data source prepared and ready locally
 As well-known formats: CSV, Shapefile
(vector)
 or as databases: SQLite/Spatialite,
PostgreSQL/PostGIS
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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18. 3 | Free Online Geovis. Tools
 ArcGIS Online, GIS Cloud, CartoDB, QGIS
Cloud, TileMill
 Evaluation criteria (see overview matrix):





Skill prerequisites
Application type (Desktop, Web)
Supported thematic maps types
Predefined base maps
Supported formats (and webservices) for
import and export or publishing
 License
 Remarks (e.g. hosting service avilable?)
GISpunkt-Lunch - Geovisualisierungs-Werkzeuge
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19. 3 | Free Online Geovis. Tools
 ArcGIS Online
Find relevant and useful basemaps, data,
configurable GIS resources
Manage you organization’s geospatial content
Create maps and apps from APIs, templates,
and tools
Publish maps and data
Collaborate
Data capturing and deploying for
– Smartphones inclusing Windows Mobile
– Tablets (ArcPad)
http://www.arcgis.com/
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20. 3 | Free Online Geovis. Tools
 GIS Cloud
 Desktop GIS features in the cloud
 Easy and efficient visualization, analysis and
exploration
 Mainly hosting
 http://www.giscloud.com/
 CartoDB
Upload, query, analyze and integrate data
Quickly create and customize maps
Generate fast, interactive and stylish maps (tiles)
hosting – as well as all code based on Open Source
(PostGIS etc.)
 http://cartodb.com/




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21. 3 | Free Online Geovis. Tools
 QGIS Desktop and QGIS Cloud
Direct viewing of vector and raster data
Mapping and interactive exploration
Create, edit and export
Perform spatial analysis
www.qgis.ch and www.giscloud.com
 TileMill / MapBox
CartoCSS
Shapefiles , SQLite, PostGIS
TileMill for Processing
http://mapbox.com/tilemill/
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22. 4 | About data access
webservices and data formats

Data access webservices
 Tile API: fast raster tiles (many API variants)
 WMS: data access service for single raster files
 WFS: data access service for vector data

Raster vs. Vector formats
 Raster:
– ‚dull‘, mainly one and only one attribute
– easy to handle
– formats: png, jpg, „tiles“
 Vector:
– ‚intelligent‘, many attributes/any structure
– Complex to handle
– formats: Shapefile, SQLite/Geopackage, GeoJSON
 „Grid“ (like Hektarraster): Special case
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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23. 4 | Stumbling blocks of geodata
publishing and sharing
 Different formats
 Coordinate Reference System (CRS)
 Spatial Reference System (SRS)
 Tips:
– EPSG:4326 = WGS84 = „GPS“ (default)
– EPSG: 21781 (CH1903/LV03)
– EPSG: 3857 or 900913 (Mercator/Google)
– http://giswiki.hsr.ch/CRS
– www.spatialreference.org
 Geovisualization issues
 …
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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24. 5 | Excursus about TileMill
and CartoCSS






Map design studio for webdesigner, cartographers and journalists
Integrated with MapBox
Multi platform, Open Source (Mapnik)
Portrayal language CartoCSS
Import formats:
 File Formats: Shapefile, CSV (lat/lon, 'WKT'), GEOJSON
 Databases: Spatialite, PostGIS
 (Raster: see 'raster-colorizer' in dev. version, will be in next
version)
Export formats:
 MapBox Online
 MBTiles (SQlite)
 Raster: PNG, PDF
 SVG (Vector Graphics)
 Mapnik XML
Schöne Karten mit TileMill erstellen...., S. Keller
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25. 5 | CSS/HTML



CSS = Cascaded Style Sheets
 Nested styling template
 Computer language for style templates (engl.
stylesheets) of structured documents
 Especially with HTML and XML (e.g. SVG)
 Nesting is default, can be overridden
There are rules. There are also rules. Then there are
ids (#poi), classes (.class), selectors ([zoom>3])
A basic CSS rule example:
/* Syntax: SELECTOR { property: Value } */
H1 {
color:red
}
Schöne Karten mit TileMill erstellen...., S. Keller
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26. 5 | CartoCSS/TileMill (1)

CartoCSS:

Extension of CSS of language elements (rules,
properties, functionen) for cartographic visualization

Doc.: www.mapbox.com/tilemill/docs/manual/carto/

Reference: www.mapbox.com/carto/api/2.1.0/
Example:
#earthquakes {
marker-width:6;
marker-fill:#f45;
marker-line-color:#813;
marker-allow-overlap:true;
}

Schöne Karten mit TileMill erstellen...., S. Keller
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27. 5 | CartoCSS/TileMill (2)
Schöne Karten mit TileMill erstellen...., S. Keller
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28. 5 | TileMill Import/Export
 SpatiaLite
 Vector
 Import
 MBTiles
 Raster tiles
 Export
 Info: http://giswiki.hsr.ch/MBTiles
 Upload to MapBox
using your account
Schöne Karten mit TileMill erstellen...., S. Keller
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29. 6 | Design and publish your
own web map (using TileMill)
 Hands on…
 We have about 40 minutes time
 Project and data on desktop
 Start TileMill
 Help
 Reference in TileMill („{}“)
 Online www.mapbox.com/tilemill/docs/
 See also http://giswiki.hsr.ch/TileMill
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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30. 6 | Hands-On CartoCSS
(follow instructions…)
Schöne Karten mit TileMill erstellen...., S. Keller
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31. 7 | Tools to extract and
transform vector data
 Online Geoconverter:




GeoConverter
OGR2KML (small datasets)
See http://giswiki.hsr.ch/Online_Geoconverter
etc..
 Desktop Geoconverter:




Open Source: OGR, GDAL
GIS: QGIS (Open Source), ArcGIS
Tools: FME, Infogrips, Geocom
etc.
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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32. 7 | Outlook
 Limitations of TileMill and CartoCSS
 Not covered:
 Full power of CartoCSS
 Publication on own server
 Programming
 Publication on own server
 Not yet available
 HSR Project „TinyTileServer“
 Programming, e.g. with Processing (.js)
Schöne Karten mit TileMill erstellen...., S. Keller
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33. Agenda (CH/DE related)
 Kurse an der HSR im Januar 2014 u.a. zu
QGIS, Python, PostgreSQL
http://giswiki.hsr.ch/Agenda
 GEOSummit 2014, 3.-5.6.2014, Bern
www.geosummit.ch
 Swiss PGDay - die Schweizer PostgreSQL-
Konferenz, 24.6.2014, HSR Rapperswil
http://pgday.ch/2014/
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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34. Thank you!
Prof. Stefan Keller
Geometa Lab at Institute for Software
University of Applied Sciences Rapperswil
Oberseestrasse 10
CH-8640 Rapperswil (Switzerland)
Web
www.gis.hsr.ch
E-Mail sfkeller(at)hsr.ch
Twitter @sfkeller
Tools for sharing maps and vector data, 31.10.13, Prof. S. Keller HSR @sfkeller
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35. Sources / Weblinks
 GeoViz:
http://giswiki.hsr.ch/Geovisualisierung
 CSS:
www.bjoernsworld.de/css/grundlagen.html
 Report: http://eprints.hsr.ch
 TileMill: http://giswiki.hsr.ch/TileMill
Schöne Karten mit TileMill erstellen...., S. Keller
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