Creating GPX tracks from cycle routes in OpenStreetMap Henry - - PowerPoint PPT Presentation

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Mar 12, 2024 364 likes •661 views

Creating GPX tracks from cycle routes in OpenStreetMap Henry Miskin Overview 1. Introduction 2. OpenStreetMap Data 3. Processing Cycle Routes 4. Complete Cycle Routes 5. Challenges & Next Steps Introduction Who I am Henry Miskin

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Creating GPX tracks from cycle routes in OpenStreetMap

Henry Miskin

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Overview

1. Introduction
2. OpenStreetMap Data
3. Processing Cycle Routes
4. Complete Cycle Routes
5. Challenges & Next Steps

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Introduction

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Who I am

Henry Miskin @hpgmiskin hpgmiskin Cycling

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Poor or damaged signage
Foliage covers signes
Hard to recover when off route

Following cycle routes

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OpenCycleMap

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OpenCycleExport

Country Cycle Route

github.com/hpgmiskin/OpenCycleExport

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Why GPX files

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OpenStreetMap Data

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OpenStreetMap Data Model

Node Way Relation Coordinate Road Footpath Cycle Route

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Shapely Linemerge

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Shapely Linemerge Issues

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Ways not terminating together

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Ways not connected

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Processing Cycle Routes

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How it works

Overpass API Result Cache Download Relation Process Ways Save GPX File Create Route

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Processing ways

1. Find all places ways intersect
2. Split ways at all intersecting points
3. Create cost matrix between all intersections

COST = DISTANCE * COEFFICIENT

Cycle Only Cycle Permitted Passible Road Impassable Road No Road

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Creating a route

1. Find furthest points from one another
2. Use Dijkstra's algorithm to find shortest path
3. Compute route in both directions

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Basic routing example

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Missing link example

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Complete Cycle Routes

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Belgium - RV4

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France - V86

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United Kingdom - Route 2

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Challenges & Next Steps

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Current challenges

Finding elevation data for routes
Continuity of cycle routes or route data
Finding the true start and end points

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Next Steps

Release GPX files on GitHub
Declare which routes are not continuous
Split routes by the towns they pass through

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