Introduction | Getting Started | Basic Workflow Example | Step 1: Visualize the Network | Step 2: Convert Network to Graph | Step 3: Extract Nodes and Map Cities | Step 4: Create OD Matrix | Step 5: Run Traffic Assignment | Step 6: Visualize Results | Advanced Workflow: Trade Flow Disaggregation | Step 1: Compute City Population Shares | Step 2: Disaggregate Trade Flows | Step 3: Run Assignment with Trade Flows | Advanced Workflow with Network Consolidation | Using Raw Segments | Consolidate Graph | Compare Original vs Consolidated Network | Network Simplification with simplify_network() | Shortest-Paths Method | Cluster Method | Key Concepts and Functions | Path-Sized Logit Model | Probability Formula | The Correction Term: Path-Size Factor ($PS_k$) | Network Processing Functions | Graph Utilities | OD Matrix Utilities | Traffic Assignment | Parameter Tuning Tips | Conclusion | Next Steps | References
Package: flownet 0.3.0
flownet: Transport Modeling: Network Processing, Route Enumeration, and Traffic Assignment
High-performance tools for transport modeling - network processing, route enumeration, and traffic assignment in R. The package implements the Path-Sized Logit model for traffic assignment - Ben-Akiva and Bierlaire (1999) <doi:10.1007/978-1-4615-5203-1_2> - an efficient route enumeration algorithm, and provides powerful utility functions for (multimodal) network generation, consolidation/contraction, and/or simplification. The user is expected to provide a transport network (either a graph or collection of linestrings) and an origin-destination (OD) matrix of trade/traffic flows. Maintained by transport consultants at CPCS (cpcs.ca).
Authors:
flownet_0.3.0.tar.gz
flownet_0.3.0.zip(r-4.7)flownet_0.3.0.zip(r-4.6)flownet_0.3.0.zip(r-4.5)
flownet_0.3.0.tgz(r-4.6-x86_64)flownet_0.3.0.tgz(r-4.6-arm64)flownet_0.3.0.tgz(r-4.5-x86_64)flownet_0.3.0.tgz(r-4.5-arm64)
flownet_0.3.0.tar.gz(r-4.7-arm64)flownet_0.3.0.tar.gz(r-4.7-x86_64)flownet_0.3.0.tar.gz(r-4.6-arm64)flownet_0.3.0.tar.gz(r-4.6-x86_64)
flownet_0.3.0.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
DESCRIPTION |NEWS
card.svg |card.png
flownet/json (API)
| # Install 'flownet' in R: |
| install.packages('flownet', repos = c('https://sebkrantz.r-universe.dev', 'https://cloud.r-project.org')) |
Bug tracker:https://github.com/sebkrantz/flownet/issues
Pkgdown/docs site:https://sebkrantz.github.io
Datasets:
- africa_cities_ports - African Cities and International Ports
- africa_network - Trans-African Road Transport Network
- africa_segments - Raw Network Segments for Trans-African Transport Network
- africa_trade - Intra-African Trade Flows by HS Section
Last updated from:f150c13972. Checks:13 OK. Indexed: yes.
| Target | Result | Time | Files | Syslog |
|---|---|---|---|---|
| linux-devel-arm64 | OK | 184 | ||
| linux-devel-x86_64 | OK | 198 | ||
| source / vignettes | OK | 248 | ||
| linux-release-arm64 | OK | 180 | ||
| linux-release-x86_64 | OK | 180 | ||
| macos-release-arm64 | OK | 119 | ||
| macos-release-x86_64 | OK | 225 | ||
| macos-oldrel-arm64 | OK | 104 | ||
| macos-oldrel-x86_64 | OK | 200 | ||
| windows-devel | OK | 114 | ||
| windows-release | OK | 117 | ||
| windows-oldrel | OK | 119 | ||
| wasm-release | OK | 180 |
Exports:consolidate_graphcreate_undirected_graphcritical_link_analysisdistances_from_graphlinestrings_from_graphlinestrings_to_graphmelt_od_matrixnodes_from_graphnormalize_graphrun_assignmentsimplify_network
Dependencies:classclassIntclicollapsecpp11crayonDBIe1071geodistgluehmsigraphKernSmoothkitlatticeleaderClusterlifecyclemagrittrMASSMatrixmirainanonextpkgconfigprettyunitsprogressproxyR6Rcpprlangs2sfunitsvctrswk
Readme and manuals
Help Manual
| Help page | Topics |
|---|---|
| Efficient Transport Modeling | flownet-package flownet |
| African Cities and International Ports | africa_cities_ports |
| Trans-African Road Transport Network | africa_network |
| Raw Network Segments for Trans-African Transport Network | africa_segments |
| Intra-African Trade Flows by HS Section | africa_trade |
| Consolidate Graph | consolidate_graph |
| Create Undirected Graph | create_undirected_graph |
| Critical Link Analysis | critical_link_analysis |
| Compute Distance Matrix from Graph | distances_from_graph |
| Convert Graph to Linestrings | linestrings_from_graph |
| Convert Linestring to Graph | linestrings_to_graph |
| Melt Origin-Destination Matrix to Long Format | melt_od_matrix |
| Extract Nodes from Graph | nodes_from_graph |
| Normalize Graph Node IDs | normalize_graph |
| Run Traffic Assignment | print.flownet run_assignment |
| Simplify Network | simplify_network |
