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Creating Transit Route Maps with ArcGIS

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Creating Transit Route Maps with ArcGIS Powered By Docstoc
					       Technical Workshops



Creating Transit Route
                 Maps
          with ArcGIS
               Will Chesser
 ESRI-Professional Services
             Redlands, CA
Topics
  •   Transit route map overview
  •   Relevant ArcGIS Tools and Concepts
       -   Linear Referencing and Dynamic Segmentation
       -   ArcGIS Schematics
       -   Cartographic Representations
       -   Network Analyst
  •   Demos
       -   Working with Linear Referencing in ArcGIS Schematics
       -   Integrating ArcGIS Schematics and Cartographic
           Representations
       -   Network Analyst routes ArcGIS Schematics
Transit Route Maps
 •   Connectivity focused
 •   Route details less important
 •   Geoschematic
      - Stop’s geographic location is important
      - Path to stops of lesser importance

 •   Schematic
      - Station-to-station
      - ‘What is next?’
      - ‘How many stops until I get off?’
Transit Route Maps

 •   Simplified geography
      - Stops
      - Connections
      - Landmarks
      - Main streets

 •   Path still critical for route generation
 •   Route may be multimodal
      -   ‘Walk to bus stop, take bus to train terminal….’
The Classic Transit Route Map
  •   London Underground – The Tube
  •   Early versions (c. 1906)-Geographically correct
The Classic Transit Route Map

  •   London Underground – The Tube
  •   Early versions (c. 1906)-Geographically correct
  •   1931 – Harry Beck-> Only topology (plus river!)
      matters
Further Examples

•   Bus Routes
Further Examples

•   Airline Routes
Route Map Variations

  •   More ‘industrial’ versions
  •   Not for public audience
       -   Single line diagrams
       -   Rail switching diagrams
ArcGIS for Transit Routes

  •   Transportation data
       -   Geometric networks
       -   Network datasets
       -   Linear referenced data (events and routes)
  •   Key toolsets
       -   ArcGIS Schematics Extension
       -   Linear referencing and dynamic segmentation
       -   Cartographic representations
       -   Network Analyst Extension
What is ArcGIS Schematics?

  •   ArcGIS Desktop extension
What is ArcGIS Schematics?

  •   ArcGIS Desktop extension
  •   For applications concerned with:
       -   Connectivity
       -   Relationships
       -   Interdependency
What is ArcGIS Schematics?
 •   ArcGIS Desktop extension
 •   For applications concerned with:
      -   Connectivity
      -   Relationships
      -   Interdependency
 •   Utilizes
      -   Geometric Networks
          (e.g., utility)
      -   Network datasets (e.g., transportation)
      -   Data with explicit connectivity (i.e. From/To node fields)
          (e.g., social network, time diagrams)
      -   3rd party APIs
ArcGIS Schematics at 10

  •   Major release
  •   Schematics feature classes
       -   Diagrams are group layers with individual feature
           classes
       -   Core symbology and labeling engines
            -   Layer driven
            -   Administrator user defines defaults
            -   Configurable by end user
       -   Custom Query and Standard Builder merged
       -   Migration tools for dataset and diagrams
       -   Diagram ‘locked’ for editing
Advantages of ArcGIS Schematics for Transit

  •   Integrate maps and schematics
       -   Depict and analyze relationships of spatial and aspatial
           features
  •   Visualize complex relationships
       -   Simplify
       -   Organize and share information
       -   Analyze the relationships of elements in a spatial
           context
Transportation Applications


  •   Create straight-line diagrams
       -   Generate subway, train, and bus routes


      Rail Branch Geography          Rail Branch Straight Line Diagram
Transportation Applications

  •   Create straight-line diagrams
       -   Generate subway, train, and bus routes
  •   Update and create switching plans
       -   Generate rail yard diagrams


       Rail Yard Geography                    Rail Yard Diagram
Transportation Applications
  •   Create straight-line diagrams
       -   Generate subway, train, and bus routes      Geo-Schematic
                                                    Service Area Diagram
  •   Update and create switching plans
       -   Generate rail yard diagrams
  •   Consume network dataset analysis




Road Service                         Hierarchical Service Area Diagram
   Area
Transportation Applications
 •   Create straight-line diagrams
      -   Generate subway, train, and bus routes
 •   Update and create switching plans
      -   Generate rail yard diagrams
 •   Consume network dataset analysis
 •   Metro maps
Other Applications
  •   Many applications beyond physical connectivity
       -   Depict flow through a non-physical network
Other Applications
   •   Many applications beyond physical connectivity
        -   Depict flow through a non-physical network
        -   Illustrate Interdependencies
                                            Flights, planes, cabin and
                                            cockpit crews scheduling


    Impact
 of late flight
through flight
dependencies
Linear Referencing
  •   Spatial data storage method
  •   Store positions (distance) along a measured linear
      feature
  •   Associate multiple attributes about a line without
      splitting line
Dynamic Segmentation
  •   Definition
       -   „Dynamic segmentation is the process of computing the
           map locations of events stored … in an event table
           using a linear referencing measurement system and
           displaying them on a map. The term "dynamic
           segmentation" is derived from the concept that line
           features need not be … segmented each time an
           attribute value changes -- you can "dynamically" locate
           the segment.’
  •   Edit, analyze, query attributes without affecting
      geometry
Linear Referencing vs. ArcGIS Schematics
  •   ArcGIS Schematics Paradigm:
       -   Elements represent real-world objects
       -   Links based on to/from node topological relationships
       -   Relative position of and distance between features is
           meaningless
       -   Coordinate space fluctuates
  •   Linear Referencing Paradigm:
       -   Events represent measurements or qualities, not
           physical things
       -   Events are route-based
       -   Events have no direct relationship to underlying
           features of the route
       -   Distance is critical for placement of measures
       -   Coordinate space is fixed
Linear Referencing vs. ArcGIS Schematics
•   Core elements in a linear referencing system are:
     -   Route
     -   Event measures

•   Core elements in ArcGIS Schematics are:
     -   Nodes
     -   Links

•   Schematics knows nothing about routes
•   No direct relationship between events, lines, and routes in
    the data
•   Must establish this relationship
         Events                                         Lines


                              Routes
XML Builder
 •   Builders determine contents and connectivity
      -   Selection starts with map feature
      -   Custom trace functions and criteria definition for some
          diagrams

 •   Since 9.2 SP4
 •   Facilitates schematic integration with 3rd party tools
     (Maximo, Rail(x)ML, etc.)
 •   Custom XML External Components
      -   Define additional criteria
      -   Contain customization to derive connectivity and content from
          3rd party API
      -   Generate
      -   Update
      -   Usually one per diagram template
Demo 1: Schematic Diagrams


               Linear Referencing
                  and Schematics
              XML Builder diagram
                       generation
Cartographic Representations
  •   Introduced at 9.2
  •   Apply rules for cartographic symbology
  •   Richer symbols and edit functions
  •   Edit map placement without changing geography
The traditional ArcGIS symbology model
  •   Create symbology
       -   Symbol Property Editor
  •   Assign symbology               Bike Shop
       -   Symbol Selector
       -   Symbology tab functions
  •   Store symbology                  BikeShops.lyr
       -   Style files
       -   Layer files and
           map documents
Limitations of the traditional model
  •   Constraints on symbol drawing
       -   Lack of tools for symbol creation
           and editing
       -   Lack of tools to customize or vary patterns
  •   Imperfect solutions to symbol conflict
       -   Edit or geoprocess spatial data OR
       -   Convert features to graphics
           (break the data link)
  •   Few cartographic automation
      or quality control tools
  •   Symbology stored separately from geospatial data
Representations: a new symbology model
  •   Different architecture
       - Symbology stored in the geodatabase
       - As feature class attributes

  •   Different software components
       - New interface and drawing tools
         for symbol creation
       - New toolbar for interactive symbol
         placement and editing
       - Geoprocessing tools for managing symbology

  •   A different symbology rendering option
       -   Not a data object or file type!
Benefits of cartographic representations

  •   Better symbology
       -   Symbol creation and editing, micro control of patterns,
           geometric effects
       -   Create symbols more efficiently
  •   Do cartography and keep geometry
       -   Move and reshape features without changing geometry
       -   Preserve topologies and networks
  •   Efficient information management
       -   Symbology stored in the geodatabase
  •   Better map production process
       -   Everything happens in ArcGIS
Multiple representations
   •   Feature classes can store more than one
       representation
        -   Symbolize city differently for city employees and
            tourists
        -   Give different users different views




The same data represented two ways—both versions are stored in
the data, not in map documents or layers.
Demo 2: Paris Metro


              Cartographic
       Representations and
        ArcGIS Schematics
Ski Resort Trail Map
  •   ArcGIS Schematics + Network Analyst +
      Cartographic Representations
      -   Dr. Kenneth Field, University of Kingston
          “A trail network is a route network comprising lines and junctions…equivalent of
          any…interconnected linear features such as roads or railways. These networks
          have conventionally been reduced to topological schematic diagrams…to
          illustrate the overall network structure. They remove context and…unnecessary
          complexities. They do precisely what a map is supposed to do which is to bring
          the essential characteristics into view.”




                 Field Kenneth S. “Schematic visualization of ski resort trails.” Journal of Maps, 2009.
What is Network Analyst?
   • Extensionfor analyzing
    transportation networks
      -   Uses Network Datasets
      -   Five types of network analysis



                                             Vehicle Routing
                                                Problem
  Route                  Closest Facility




 Origin-Destination
  (OD) Cost Matrix                          Service Area
Network datasets
  •   Network designed for ArcGIS Network Analyst
  •   Built from simple features
  •   Supports transportation modeling
  •   Source data
       - Geodatabase feature classes
       - Shapefiles
       - StreetMap data
         -   Pre-built network dataset
Multimodal example
Demo 3: Paris Route Map


           Network Analyst and
            ArcGIS Schematics
                    Integration
Questions and Answers

				
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