Network Analysis Environment Settings

The Network Analysis Environment Settings window is used to configure global parameters for network analysis. The Transport Analysis Tab -> Route Analysis group -> Environment Settings checkbox controls the visibility of this window.

Caution:

The "Environment Settings" window is bound to a network dataset. Parameters can only be set when the current map contains an open network dataset.

Introduction to "Environment Settings" Window

Toolbar

  • Styles: Configure point styles for stations and barriers, line styles for result routes, area styles for service areas, and text prompt styles during transportation analysis and facility network analysis. For details, see Styles page.
  • Traffic Rules Settings: Set traffic rules for network analysis, including one-way restrictions (forward/backward values) and forbidden passages. For details, see Traffic Rules Settings dialog.
  • Turn Table Settings: Configure turn tables for network analysis, including Create Turn Table and Set Turn Table. For details, see Turn Table page.
  • Weight Settings: Update edge weights and node weights in memory. Update Edge Weight modifies forward/backward weights and barrier status of arcs. Update Node Weight adjusts turning weights and barrier status of nodes.
  • Trace Analysis Network Modeling: Configure unified analysis parameters for trace analysis, including node/edge ID fields, flow direction creation, and level creation for facility networks. For details, see Trace Analysis Network Modeling.
  • Create 3D Network Dataset Flow Direction: Generate flow directions for 3D network datasets based on specified source/sink locations.
  • Analysis Area Settings: Define network analysis boundaries to improve performance by loading only specified network dataset areas. For details, see Analysis Area Settings.
  • Pipeline Model Settings: Build pipeline model data through pipeline modeling and layer configuration before pipe burst analysis.
  • Check Loops: Detect loops in network datasets. For details, see Check Loops page.
  • Create Network Model File: Generate *.snm network model files from 2D network datasets. For details, see Create Network Model File page.

  • Network Layer Dropdown: When multiple network datasets exist, select the target dataset for environment settings.

Network Analysis Basic Parameters

  • Network Dataset: Displays the name of the selected network dataset (read-only).
  • Forward/Backward Weight Field: Select fields from dropdown lists to represent traversal costs. Any fields from the network layer can be used.
  • Weight fields represent traversal costs between nodes. Practical examples include distance, time, or expense fields. Forward weight indicates the cost from arc start to end, while backward weight represents the reverse direction. These fields can be identical (e.g., length) or different (e.g., time when traversal direction affects duration).
  • Expressions can be directly entered or built using the SQL Expression dialog.
  • Node ID Field: Select a unique identifier field for network nodes, typically from point datasets. Default: SMNODEID.
  • Edge ID Field: Select a unique identifier field for network edges, typically from line datasets. Default: SMEDGEID.
  • Start/End Node ID: Select fields identifying start/end nodes of edges. Default: SMTNODE.
  • Edge Filter: Filter edges during analysis using SQL expressions. See SQL Expression Query.
  • Traffic Rules: Enable/disable traffic rules for analysis. Default: disabled. Configure via Traffic Rules Settings.
  • Turn Table: Enable/disable turn tables for analysis. Default: disabled. See Turn Table for setup.

Result Settings

  • Result Datasource: Default storage location for network analysis results. Defaults to the network dataset's datasource.
  • Edge Info Field: Provides arc information (e.g., road names) for route guides.
  • Node Info Field: Provides node information (e.g., station names) for route guides.

Trace Analysis

  • Flow Direction Field: Mandatory field specifying arc flow directions for trace analysis.