AutoCarto Conference 2012 – 18th September 2012
Charlotte Hoarau
PhD Student at COGIT Lab
Supervisors : Sébastien Mustière...
CONTEXT
18th Sept 2012 2
 Mixed / hybrid / blended / crossed
cartographic representations and interactive tools
AutoCarto...
OUR APPROACH
3
 Looking at existing visualizations
 Statistical study on cartographic
websites
 Questioning the fitness...
OUTLINE
4
 Website survey panel
& collected information
 By-default visualizations
 Confronting uses & users
with carto...
OUTLINE
5
 Website survey panel
& collected information
 By-default visualizations
 Confronting uses & users
with carto...
THE GÉOPORTAIL INFRASTRUCTURE
618th Sept 2012
AutoCarto Conference
Charlotte Hoarau
THE GÉOPORTAIL API
7
 Providing cartographic interactive tools
18th Sept 2012
AutoCarto Conference
Charlotte Hoarau
THE GÉOPORTAIL API
8
 Providing reference data
18th Sept 2012
AutoCarto Conference
Charlotte Hoarau
City Map Topographic ...
THE GÉOPORTAIL API
9
 Providing reference data
18th Sept 2012
AutoCarto Conference
Charlotte Hoarau
SURVEY PANEL
10
 45 selected websites based on the Géoportail API
18th Sept 2012
AutoCarto Conference
Charlotte Hoarau
SURVEY PANEL
 45 selected websites based on the Géoportail API
 Varied cartographic applications
 Design representation...
12
COLLECTED INFORMATION
18th Sept 2012
AutoCarto Conference
Charlotte Hoarau
URLaddressName
Affiliated
organism
Theme&Aud...
OUTLINE
13
 Website survey panel
& collected information
 By-default visualizations
 Confronting uses & users
with cart...
AVAILABILITY OF GÉOPORTAIL DATA
14
 Available layers
18th Sept 2012
AutoCarto Conference
Charlotte Hoarau
0.00
20.00
40.0...
BY DEFAULT CARTOGRAPHIC VISUALIZATION
1518th Sept 2012
AutoCarto Conference
Charlotte Hoarau
Background
Thematic
data
BY DEFAULT BACKGROUND
16
 Predominance of topographic maps display
 20% mixed representations
18th Sept 2012
AutoCarto C...
EXISTING BACKGROUNDS
17
IGN Map
under Imagery
IGN Imagery
under map
18th Sept 2012
AutoCarto Conference
Charlotte Hoarau
EXISTING BACKGROUNDS
18
IGN Map
under Imagery
IGN Imagery
under map
Non mixed
background
Map
100%
Imagery
0%
Imagery
100%
...
EXISTING BACKGROUNDS
19
IGN Map
under Imagery
IGN Imagery
under map
Non mixed
background
Map
100%
Imagery
0%
Imagery
100%
...
EXISTING BACKGROUNDS
20
IGN Map
under Imagery
IGN Imagery
under map
Non mixed
background
Map
100%
Imagery
0%
Imagery
100%
...
EXISTING BACKGROUNDS
21
IGN Map
under Imagery
IGN Imagery
under map
Non mixed
background
Map
100%
Imagery
0%
Imagery
100%
...
EXISTING BACKGROUNDS
22
IGN Map
under Imagery
IGN Imagery
under map
Non mixed
background
Map
100%
Imagery
0%
Imagery
100%
...
50%
30%
13%
7%
Non mixed
backgrounds
Moderately mixed
backgrounds
Mixed
backgrounds
Faded mixed
backgrounds
DEFAULT BACKGR...
MIXING BASE MAPS BY TRANSPARENCY
2418th Sept 2012
AutoCarto Conference
Charlotte Hoarau
0
10
20
30
40
50
60
70
80
90
100
1...
OUTLINE
25
 Website survey panel
& collected information
 By-default visualizations
 Confronting uses & users
with cart...
RELEVANT DESIGN CHARACTERISTICS OF
VISUALIZATIONS IN USE
2618th Sept 2012
AutoCarto Conference
Charlotte Hoarau
Map & Imag...
CONFRONTING USERS TO DESIGN CHOICES
2718th Sept 2012
AutoCarto Conference
Charlotte Hoarau
Map & Imagery mixed background
...
CONFRONTING USES TO DESIGN CHOICES
2818th Sept 2012
AutoCarto Conference
Charlotte Hoarau
Map & Imagery mixed background
M...
CONCLUSION
29
 Mixed cartographic representations
 Increased use of imagery background
 High diversity of existing desi...
PERSPECTIVES
3018th Sept 2012
AutoCarto Conference
Charlotte Hoarau
 Intermediate / “In-between” cartographic representat...
AutoCarto Conference 2012 – 18th September 2012
Charlotte Hoarau
charlotte.hoarau@ign.fr
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Orthoimage or map visualization in use in geoportals - Case Study on the French Geoportal, C.Hoarau, Autocarto 2012

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This paper sets out the results of a statistical analysis of a survey on a panel of 45
cartographic websites using the API of the French Géoportail. Existing design choices, such as
favored base maps, transparency levels of the displayed layers, scale visualization, have been
studied from mixed representations in use. They have also been faced to the aim of the related
applications, the user’s tasks (data visualization and interaction) and their resulting uses in order
to define general trends about mixed representations.

http://www.citeulike.org/user/Charlotte_Hoarau/article/11333035

Published in: Technology, Education
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Transcript of "Orthoimage or map visualization in use in geoportals - Case Study on the French Geoportal, C.Hoarau, Autocarto 2012"

  1. 1. AutoCarto Conference 2012 – 18th September 2012 Charlotte Hoarau PhD Student at COGIT Lab Supervisors : Sébastien Mustière, Sidonie Christophe ORTHOIMAGE OR MAP VISUALIZATION IN USE IN GEOPORTALS Case study on the French Geoportal
  2. 2. CONTEXT 18th Sept 2012 2  Mixed / hybrid / blended / crossed cartographic representations and interactive tools AutoCarto Conference Charlotte Hoarau Are they a technical opportunity? a popular trend? Or a really efficient new cartographic representation?
  3. 3. OUR APPROACH 3  Looking at existing visualizations  Statistical study on cartographic websites  Questioning the fitness for use of these representations  Identifying design guidelines to build these representations 18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  4. 4. OUTLINE 4  Website survey panel & collected information  By-default visualizations  Confronting uses & users with cartographic representations 18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  5. 5. OUTLINE 5  Website survey panel & collected information  By-default visualizations  Confronting uses & users with cartographic representations 18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  6. 6. THE GÉOPORTAIL INFRASTRUCTURE 618th Sept 2012 AutoCarto Conference Charlotte Hoarau
  7. 7. THE GÉOPORTAIL API 7  Providing cartographic interactive tools 18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  8. 8. THE GÉOPORTAIL API 8  Providing reference data 18th Sept 2012 AutoCarto Conference Charlotte Hoarau City Map Topographic Map Road Map Road Map Political Map Physical Map Very Large Scales Large Scales Medium Scales Small Scales Very Small Scales Very Small Scales
  9. 9. THE GÉOPORTAIL API 9  Providing reference data 18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  10. 10. SURVEY PANEL 10  45 selected websites based on the Géoportail API 18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  11. 11. SURVEY PANEL  45 selected websites based on the Géoportail API  Varied cartographic applications  Design representation  Targeted audience  Main themes 1118th Sept 2012 AutoCarto Conference Charlotte Hoarau
  12. 12. 12 COLLECTED INFORMATION 18th Sept 2012 AutoCarto Conference Charlotte Hoarau URLaddressName Affiliated organism Theme&Audience Scale Bydefault visualization Thematic data Loading data Exportdata Visibility, Ordering& Transparency Interactive tools Location IGN DB Usestatistics
  13. 13. OUTLINE 13  Website survey panel & collected information  By-default visualizations  Confronting uses & users with cartographic representations 18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  14. 14. AVAILABILITY OF GÉOPORTAIL DATA 14  Available layers 18th Sept 2012 AutoCarto Conference Charlotte Hoarau 0.00 20.00 40.00 60.00 80.00 100.00 Websitepercentages
  15. 15. BY DEFAULT CARTOGRAPHIC VISUALIZATION 1518th Sept 2012 AutoCarto Conference Charlotte Hoarau Background Thematic data
  16. 16. BY DEFAULT BACKGROUND 16  Predominance of topographic maps display  20% mixed representations 18th Sept 2012 AutoCarto Conference Charlotte Hoarau How base maps are mixed to design background layers? IGN maps IGN maps & imagery IGN imagery google relief OSM & relief other
  17. 17. EXISTING BACKGROUNDS 17 IGN Map under Imagery IGN Imagery under map 18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  18. 18. EXISTING BACKGROUNDS 18 IGN Map under Imagery IGN Imagery under map Non mixed background Map 100% Imagery 0% Imagery 100% Map 0% 18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  19. 19. EXISTING BACKGROUNDS 19 IGN Map under Imagery IGN Imagery under map Non mixed background Map 100% Imagery 0% Imagery 100% Map 0% Moderately mixed background Map 100% Imagery 50% Imagery 100% Map 30% 18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  20. 20. EXISTING BACKGROUNDS 20 IGN Map under Imagery IGN Imagery under map Non mixed background Map 100% Imagery 0% Imagery 100% Map 0% Moderately mixed background Map 100% Imagery 50% Imagery 100% Map 30% Mixed backgrounds Map 100% Imagery 80% Imagery 100% Map 70% 18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  21. 21. EXISTING BACKGROUNDS 21 IGN Map under Imagery IGN Imagery under map Non mixed background Map 100% Imagery 0% Imagery 100% Map 0% Moderately mixed background Map 100% Imagery 50% Imagery 100% Map 30% Mixed backgrounds Map 100% Imagery 80% Imagery 100% Map 70% Faded Mixed backgrounds Map 50% Imagery 30% Imagery 70% Map 60%18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  22. 22. EXISTING BACKGROUNDS 22 IGN Map under Imagery IGN Imagery under map Non mixed background Map 100% Imagery 0% Imagery 100% Map 0% Moderately mixed background Map 100% Imagery 50% Imagery 100% Map 30% Mixed backgrounds Map 100% Imagery 80% Imagery 100% Map 70% Faded Mixed backgrounds Map 50% Imagery 30% Imagery 70% Map 60%18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  23. 23. 50% 30% 13% 7% Non mixed backgrounds Moderately mixed backgrounds Mixed backgrounds Faded mixed backgrounds DEFAULT BACKGROUND MIX 2318th Sept 2012 AutoCarto Conference Charlotte Hoarau How much are base maps mixed in existing backgrounds??
  24. 24. MIXING BASE MAPS BY TRANSPARENCY 2418th Sept 2012 AutoCarto Conference Charlotte Hoarau 0 10 20 30 40 50 60 70 80 90 100 11 1 2 8 9 22 50 10 31 5 15 18 20 35 42 46 Transparencylevel Websites Id Map Imagery MapBackground Fadedmixedrepresentations ImageryBackground Hard to find a consensus on mixed design
  25. 25. OUTLINE 25  Website survey panel & collected information  By-default visualizations  Confronting uses & users with cartographic representations 18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  26. 26. RELEVANT DESIGN CHARACTERISTICS OF VISUALIZATIONS IN USE 2618th Sept 2012 AutoCarto Conference Charlotte Hoarau Map & Imagery mixed background Map Background Imagery background Transparent Map No Map transparency Opaque Map Opaque Imagery Transparent Imagery No Imagery Transparency Adaptive Map No Map Physical map Topographic MapRoad Map Very small scale Big scaleSmall Scale Adaptive Scale Imagery background Topographic Map background Adaptive applications Fixed scale applications
  27. 27. CONFRONTING USERS TO DESIGN CHOICES 2718th Sept 2012 AutoCarto Conference Charlotte Hoarau Map & Imagery mixed background Map Background Imagery background Transparent Map No Map transparency Opaque Map Opaque Imagery Transparent Imagery No Imagery Transparency Adaptive Map No Map Physical map Topographic MapRoad Map Very small scale Big scaleSmall Scale Adaptive Scale Imagery background Topographic Map background Adaptive applications Fixed scale applications Geomatics Tracks Tourism History Education Real Estate Sustainable Development Hiking
  28. 28. CONFRONTING USES TO DESIGN CHOICES 2818th Sept 2012 AutoCarto Conference Charlotte Hoarau Map & Imagery mixed background Map Background Imagery background Transparent Map No Map transparency Opaque Map Opaque Imagery Transparent Imagery No Imagery Transparency Adaptive Map No Map Physical map Topographic MapRoad Map Very small scale Big scaleSmall Scale Adaptive Scale Geomatics Tracks Tourism History Education Real Estate Sustainable Development Hiking Imagery background Topographic Map background Adaptive applications Fixed scale applications Map Imagery Cadastral Parcels Elevation Hydrography Roads Administrative Limits
  29. 29. CONCLUSION 29  Mixed cartographic representations  Increased use of imagery background  High diversity of existing designs  Design guidelines identified  Mixed design issues  What is a base map?  Is overlapping by transparency consistent? 18th Sept 2012 AutoCarto Conference Charlotte Hoarau
  30. 30. PERSPECTIVES 3018th Sept 2012 AutoCarto Conference Charlotte Hoarau  Intermediate / “In-between” cartographic representations
  31. 31. AutoCarto Conference 2012 – 18th September 2012 Charlotte Hoarau charlotte.hoarau@ign.fr

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