Mobile gis

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This study has done to identify the applicability of Mobile GIS as a method of data collection for mobility mapping.

This study has done to identify the applicability of Mobile GIS as a method of data collection for mobility mapping.

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  • 1. ` Niroshan Sanjaya Department of Town & Country Planning, University of Moratuwa Dr Yann Chemin International Water Management Institute, Pelawatta, Sri Lanka Mr Amila B Jayasinghe Department of Town & Country Planning, University of Moratuwa
  • 2. FOSS4G Sri Lanka 2014 • Importance of human movement on spatial planning • Existing data collection method • Background • Methodology • Case studies • Process • Results • Outputs
  • 3. FOSS4G Sri Lanka 2014 • Spatial configuration is considered as an important element that influences people spatial experiences (Steadman, 1983; Hillier, 1996). • Spatial layout is an essential element in people's understanding of their spatial surroundings( Golledge & Stimson, 1997). • Humans/pedestrians select routes according to their convenience and spatial cognition (Millonig & Gartner, 2008) • Plans should be prepared with the understanding of human movement patterns to provide the comfortability for pedestrians • To understand the spatial configuration, it is important to understand human movement on space • To design pedestrian friendly paths, it is important for planners to understand human movements
  • 4. FOSS4G Sri Lanka 2014 Location Time Pattern Direction Duration Frequency of the activity Sequence Volume Rout choice Diary     ?  ?   Questionnaire     ?  ?   Direct observation       ?   Video     ?  GPS         Source- Based on Literature review
  • 5. FOSS4G Sri Lanka 2014 Source- Based on Literature review
  • 6. FOSS4G Sri Lanka 2014 Characters which should be included in Data and Data collection methods • Able to track actual movement path • With the time • with location ( Origin, Destination) • Accuracy • Efficiency • Record the individual’s path • With minimum number of labors • Easy to update Existing Methods
  • 7. FOSS4G Sri Lanka 2014 GPS location Direction Pattern Time Accelerometer Speed Pattern Compass Direction Pattern Camera Characteristic of the place Open Source Operating Systems DevelopVaries applications Ability to create real time data collection Personnel DigitalAssistant (PDA)
  • 8. FOSS4G Sri Lanka 2014 0 50 100 150 2000 2005 2010 2015 % Year Celluar Mobile Per Persons (%) Source- Central Bank, 2013 0 50 100 150 2000 2005 2010 2015 LKR Thousands YEAR Smartphone Price 0 5 10 15 1940 1960 1980 2000 2020 Attributes Year Needs of Data Call Call, SMS Call, Camera, MP3 player etc.. ..., GPS, Accelerometer, Compass, etc Traditional Measurement Need New technology Diary, Observation Individual and Updated data GPS Source- Author constructed Source- Author constructed
  • 9. FOSS4G Sri Lanka 2014 1G 2G 3G 4G Analog Global System Mobile (GSM) High Speed Data facility Voice calling voice, data (GPRS), SMS Broadband data, voice, streaming video Show the number SMS, Internet, FM radio, etc High Speed Internet, Video Camera, MP3player, GPS, AGPS, different sensors, Open source OS ( Source – Miyashita, 2012, Sharon, 2012)
  • 10. FOSS4G Sri Lanka 2014 z • Mobile Phone location identification systems • A-GPS • Need to connect Local Networks • Standalone GPS • Based on Satellite • Triangulation technique • Get Location Using Local Network • Accuracy is 1000m ( Source - McNamara,aA 2008)
  • 11. FOSS4G Sri Lanka 2014 Based on the needs Applicability Efficiency Reliability Accuracy Types of data & Use
  • 12. FOSS4G Sri Lanka 2014 • Develop a framework for data collection of human movement pattern using Mobile GIS. • Identify the usability and applicability and its efficiency, accuracy and reliability of Mobile GIS as a method of data collection in Sri Lankan context Can mobile Phone use as a data collection method of human movement, How Objectives
  • 13. FOSS4G Sri Lanka 2014 Identify the attributes which extracted from each method Identify the advantages & disadvantages Identify the different data collection methods Selection of a study area Sample selection Process data Output Validate the output Research outcome Identify the issues regarding data collection Research Question Literature Review
  • 14. FOSS4G Sri Lanka 2014
  • 15. FOSS4G Sri Lanka 2014 My Tracks QGIS
  • 16. FOSS4G Sri Lanka 2014 • In Canbera and Sydney • Identify the tourist behavior • Using GPS device • Collected 76 trails • Visitor movement based on the city core or ‘spine’ • Tourists visiting Sydney will walk up to 35 kilometres a day. Tourists in the Canberra tracking study generally utilised the same roads, streets and patterns of movement. Etc.. • Identify young people movement • 169 young people • Total 169 tracks • Using GPS device • space syntax methodology is capable of predicting the actual movement • Use tablet pc • 111 trajectories • Development of a typology of pedestrian spatio-temporal behaviour • Use 4 GPS devices • Millions of population • Get the position cordiantes • Demonstrate the track pattern of pedestrian movement at different locations in the area
  • 17. FOSS4G Sri Lanka 2014 1. Sumanadasa Building 2. L Block 3. Goda Canteen 4. Wala canteen 5. Library 6. Faculty of information technology 7. QS Building 8. Extension Building 9. Examination Hall 10. Department of Electronic & Telecommunication 11. Department of Transport & Logistic Management 12. Department of Civil Engineering 13. Examination Division 14. CAD laboratory & Drawing Center 15. Department of Mechanical Engineering 1 2 3 4 5 7 8 9 10 11 12 13 14 15 6
  • 18. FOSS4G Sri Lanka 2014 • To identify the Smart phone users within the study area • Conduct a survey • Online – via google form • Offline- via class representatives Result Department Percentage Architecture 22 % Building Economics 32 % Town and Country Planning 14 % Integrated Deign 35 % Department Percentage Chemical and Process Engineering 55 % Civil Engineering 66 % Computer Science and Engineering 80 % Earth Resources Engineering 58 % Electrical Engineering 75 % Electronic and Telecommunication 78 % Materials Science and Engineering 57 % Mechanical Engineering 67 % Textile and Clothing Technology 56 % Transport and Logistics Management 65 % IT 55 % NDT 40 %
  • 19. FOSS4G Sri Lanka 2014 • Identify the Students distribution within the university • Select a sample proportion to the distribution 21% 53% 10% 16% Archi Eng IT NDT 7% 9% 6% 11% 6% 8%4%8% 6% 7% 28% Chemical CSE EM Civil Elect E&TC MT Mech TM TLM 1ST year 24% 43% 17% 16% Archi QS/FM Design TCP
  • 20. FOSS4G Sri Lanka 2014 Identify the devices Identify the Proper Tracking System OUTPUT
  • 21. FOSS4G Sri Lanka 2014 Data save as a track Track can be exported as KML, GPX, CSV Collecting tracks Via Email, Bluetooth
  • 22. FOSS4G Sri Lanka 2014
  • 23. FOSS4G Sri Lanka 2014 • Keyhole Markup Language. It is used to display geographic data in Google Earth • KML uses a tag-based structure with nested elements and attributes encoded using eXtensible Markup Language (XML) • use the gx prefix and namespace Url • <kml xmlns="http://www.opengis.net/kml/2.2" • xmlns:gx="http://www.google.com/kml/ext/2.2"> • path is saved as point with coordinate value consisting of three values for longitude, latitude, and altitude with seperate time stamp • <gx:coord>79.901308 6.800085 71.58203125</gx:coord> • <when>2013-11-22T02:25:03.854Z</when> • It saved as multiple tracks, then it is interpolated
  • 24. FOSS4G Sri Lanka 2014 • <gx:MultiTrack id="ID"> <!-- specific to MultiTrack --> <altitudeMode>clampToGround</altitudeMode> <!-- kml:altitudeModeEnum: clampToGround, relativeToGround, or absolute --> <!-- or, substitute gx:altitudeMode: clampToSeaFloor, relativeToSeaFloor - -> <gx:interpolate>0<gx:interpolate> <!-- boolean --> <gx:Track>...</gx:Track> <!-- one or more gx:Track elements --> </gx:MultiTrack> • Convert to ESRI shp file, only create two points without any data
  • 25. FOSS4G Sri Lanka 2014 • GPX format mean that is the GPS eXchange Format, light-weight XML data forma • It Consist with GPS data such as waypoints, routes, and tracks <trkpt lat="6.796076" lon="79.90141"> <ele>27.7</ele> <time>2013-11-25T07:14:36.753Z</time> </trkpt> • GPX format is increasingly used by GPS programs because of its flexibility as an xml schema • Easy to convert to other formats without any data loss
  • 26. FOSS4G Sri Lanka 2014 Data on points Data on Lines
  • 27. FOSS4G Sri Lanka 2014 Movement Paths Individual Movement Path Locations Direct Processed Line Point Rout Choice Most integration path/Locations Pattern Geographic features Waiting Locations INPUTTool/MethodOut PutInformation
  • 28. FOSS4G Sri Lanka 2014 Source- Author constructed Layers can be Imported To GIS Software (QGIS)
  • 29. FOSS4G Sri Lanka 2014 Source- Author constructed Methodology 5mX5m pixel size Density = ∑(number of lines) 𝐴𝑟𝑒𝑎 𝑜𝑓 𝑝𝑖𝑥𝑒𝑙
  • 30. FOSS4G Sri Lanka 2014 Source- Author constructed Source- Author constructed Source- Author constructed
  • 31. FOSS4G Sri Lanka 2014 Source- Author constructed
  • 32. FOSS4G Sri Lanka 2014
  • 33. FOSS4G Sri Lanka 2014 Example Point Layers
  • 34. FOSS4G Sri Lanka 2014 Functionality of Area with time…. Normal Day 8~12 AM 12~1 PM
  • 35. FOSS4G Sri Lanka 2014 • Counts • Mind maps Time palace Goda Canteen Wala Canteen L canteen 7.30am 130 140 60 10.40am 36 21 8 12.30pm 180 165 72 3.15pm 28 18 12 7.30pm 96 105 ..
  • 36. FOSS4G Sri Lanka 2014 Origin Destination Origin Destination Actual Path Identified Path
  • 37. FOSS4G Sri Lanka 2014 Daily activity show only in given Area
  • 38. FOSS4G Sri Lanka 2014 15 25 50 75 90 100 0 5 10 15 20 25 30 35 0 20 40 60 80 100 120 CoveredLocations Sample Size 100% Accuracy Variation
  • 39. FOSS4G Sri Lanka 2014 Identified data recording app Identified data types and limitations Identified data conversion tools and limitations Identified databases and usages Identified analysis methods and tool and limitations Identified different output and results Framework for Data collection method
  • 40. FOSS4G Sri Lanka 2014 Mobile GIS Diary Observation Video based Questionnaire Location      Direction    Time      Rout Choice    Duration    Geographic character  Sequence   Ability and Advantages
  • 41. FOSS4G Sri Lanka 2014 Mobile GIS Diary Observation Video Questioner Limited to observer area   Depend on person    Need labors   Give separate equipment/ use material     Allocate separate time    Fake data can be provided    Disadvantages It has more data, therefore people can be confused with them
  • 42. FOSS4G Sri Lanka 2014 Thank you