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+PGIS techniquesto identify land use conflictsin Portsmouth          Hélène Draux, Cities Institute, London Metropolitan U...
Participatory GIS= maps to improve participation     from „silent majority‟ to identify land use conflicts         in Port...
+    Structure     Case   study: Coastal conflicts in Portsmouth     Methods   used      Face-to-face   survey      Su...
+    Case study
+    Farlington Marshes                            Langstone Harbour                            British, European       ...
+    Farlington Marshes
+    Aims Assess   value of    vulnerable open    spaces Assess   flood    knowledge Understand    perception    of spa...
+ Face-to-face  methodologies
+    Face-to-face survey:    Open space users and/or Farlington Marshes    users, stakeholders                           ...
:( In-depth   :)          qualitative    Time   consuming data from each participants            Surveys only small    ...
+    Summer fair survey:    Open space users and/or Farlington Marshes    users, stakeholders                             ...
+                                        :(     Can               :)          reach more         Needslots of people    ...
+    Online survey
+    Online survey    General public, open space users and/or    Farlington Marshes users and stakeholders    Aims to:    ...
+www.openspaces-portsmouth.org.uk
+    Google Map API v3     Add   markers    with a click     Capture geolocalised     information     Display   kml lay...
+    Add markers - Website    Locations and flooding                             Marker                             Tutori...
+    Add markers - Coding    Map:    var map = new     google.maps.Map(document.getElementById("map_canva     s"), options...
+    Add markers - Database
+    Add markers - Database
+    Infowindow - Website
+    Infowindow - Website
+    Infowindow - Website
+    Infowindow - Coding    parksLayer = new google.maps.KmlLayer(„Parks.kml,{        suppressInfoWindows: true,        pr...
+    Customised maps: kml and styles
+    Customised maps: kml and styles    Coding Style    var myStyle =                            featureType: "road.arteri...
+    Quick analysis
+      Participation      100100 90 80 70 60 50 40 30 20                                                                  ...
+    Participation - map
+    Time spent00:4000:3500:3000:2500:20                                                                          Average=...
+    Flood perception
+    Preferred scenario                     Hold the line                 88%                     Managed                 ...
+    Issues
+    Issues specific to this method    Technical                  Design     Extensivetime to clear    Too   long survey...
+    Recommendations
+    Recommendations/suggestions     Shorter   survey (5 minutes)     Focus   survey on one issue     Finding   gatekee...
Thanks!+    Hélène Draux, Cities Institute                           h.draux@londonmet.ac.uk                   http://www....
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PGIS techniques to identify land use conflicts in Portsmouth

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Presentation given at the GISRUK 2012, introducing my research on Participatory GIS to identify land use conflicts. It introduces the methods used to investigate land use conflict in coastal city, focusing primarily on the online survey.

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PGIS techniques to identify land use conflicts in Portsmouth

  1. 1. +PGIS techniquesto identify land use conflictsin Portsmouth Hélène Draux, Cities Institute, London Metropolitan University h.draux@londonmet.ac.uk
  2. 2. Participatory GIS= maps to improve participation from „silent majority‟ to identify land use conflicts in Portsmouth
  3. 3. + Structure  Case study: Coastal conflicts in Portsmouth  Methods used  Face-to-face survey  Summer Fair  Online survey  Recommendations
  4. 4. + Case study
  5. 5. + Farlington Marshes  Langstone Harbour  British, European and International designations (SSSI, SPA, SAC, a nd Ramsar)  Reclaimed three centuries ago
  6. 6. + Farlington Marshes
  7. 7. + Aims Assess value of vulnerable open spaces Assess flood knowledge Understand perception of space regarding flood risks
  8. 8. + Face-to-face methodologies
  9. 9. + Face-to-face survey: Open space users and/or Farlington Marshes users, stakeholders  45 questions  15 minutes 2 types of mapping activities  162 interviews
  10. 10. :( In-depth :) qualitative  Time consuming data from each participants  Surveys only small sample, and quite Includes “silent short survey majority”  Relies on the weather
  11. 11. + Summer fair survey: Open space users and/or Farlington Marshes users, stakeholders  Organisedby Portsmouth Climate Action Network 1 sunny day  Around 60 participants for each of the 4 activities
  12. 12. + :(  Can :) reach more  Needslots of people diverse population: to man the activities  Families  Relieson the fair  Young people organisers .. and  Less frequent park weather! users  ..  Limited data from each participant
  13. 13. + Online survey
  14. 14. + Online survey General public, open space users and/or Farlington Marshes users and stakeholders Aims to:  Attract all population in Portsmouth  Potentially get a bigger sample
  15. 15. +www.openspaces-portsmouth.org.uk
  16. 16. + Google Map API v3  Add markers with a click  Capture geolocalised information  Display kml layers.. Fieldwork
  17. 17. + Add markers - Website Locations and flooding Marker Tutorial Instructions Postcode
  18. 18. + Add markers - Coding Map: var map = new google.maps.Map(document.getElementById("map_canva s"), options); For 1 location only Add marker: google.maps.event.addListenerOnce(map, "click", function( event) var latlng = marker.getPosition(); Lat = latlng.lat() / Lon = latlng.lng()
  19. 19. + Add markers - Database
  20. 20. + Add markers - Database
  21. 21. + Infowindow - Website
  22. 22. + Infowindow - Website
  23. 23. + Infowindow - Website
  24. 24. + Infowindow - Coding parksLayer = new google.maps.KmlLayer(„Parks.kml,{ suppressInfoWindows: true, preserveViewport: true }); parksLayer.setMap(map); infowindow = new google.maps.InfoWindow({}); // Add a listener for the click event google.maps.event.addListener(parksLayer, click, showArrays); html describing the infowindow
  25. 25. + Customised maps: kml and styles
  26. 26. + Customised maps: kml and styles Coding Style var myStyle = featureType: "road.arterial", [ elementType: "geometry", {featureType: "road", stylers: [{ visibility: "off" }] elementType: "labels", },{ stylers: [{ visibility: "off" }] featureType: "road.local", },{ elementType: "geometry", featureType: "road.highway", stylers: [ elementType: "geometry", { visibility: "off" } stylers: [ ] { saturation: -50 }, { lightness: 20 }, { visibility: "simplified" }] },{
  27. 27. + Quick analysis
  28. 28. + Participation 100100 90 80 70 60 50 40 30 20 18 10 0 Background Parks Flood Land Use Willingness to pay Farlington Marshes Participants who accessed the page and usable replies
  29. 29. + Participation - map
  30. 30. + Time spent00:4000:3500:3000:2500:20 Average=00:15 18 minutes00:1000:0500:00 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
  31. 31. + Flood perception
  32. 32. + Preferred scenario Hold the line 88% Managed realignment, loss of 6% 80% Managed realignment, loss of 18 participants For 6% 50%
  33. 33. + Issues
  34. 34. + Issues specific to this method Technical Design  Extensivetime to clear  Too long survey the database Loss of interest  Notenough completed  Too many questions: surveys No clear focus  Loss of some data
  35. 35. + Recommendations
  36. 36. + Recommendations/suggestions  Shorter survey (5 minutes)  Focus survey on one issue  Finding gatekeepers while starting the coding  Organise hands-on sessions? (University / community centre)
  37. 37. Thanks!+ Hélène Draux, Cities Institute h.draux@londonmet.ac.uk http://www.openspaces-portsmouth.org.uk

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