Routing consists of finding optimal paths along geographic networks such as roads or trail systems.

learn more… | top users | synonyms

2
votes
4answers
2k views

How to route on OSM without using any already released routing engine?

i'm a computer science student and a complete beginner in GIS and stuff. i'm trying create my own web-based multi-modal journey planner as my thesis. And as it is a thesis i cant use any ready-made ...
2
votes
2answers
119 views

Are there open standards for storing multi-modal routing graphs?

I'm looking for any open standards (or maybe best practices) for storing multi-modal routing graphs, eg. info for pedestrian, bike, public transport and car routing, etc. Every data provider seems to ...
2
votes
1answer
677 views

Is it possible to integrate a route planner into QGIS?

I am looking for an open source GIS and now asking myself if it is possible to integrate a route planner into QGIS. The route planner should be able to calculate the distance from one position in the ...
2
votes
1answer
124 views

Finding intermediate points and speed over a segment

I have a dataset which is in the form of ( Time , Car ID, Speed at that moment, Lat,Long) and I need to do some machine learning on the data to answer the following questions : Best route from ...
2
votes
2answers
253 views

Ordnance Survey No Turn

I have a project that involves porting a lot of information from ordnance survey to a spatial database. From that database I'm going to extract the information I need for a routing application. ...
2
votes
1answer
45 views

Conceptually, what's the ideal way to develop detour maps for a large number of nodes

I have a road layer of roughly 30,000 links. On these links, I have a total of 15,000 nodes that are sorted in a point layer. I'm trying to build a detour distance and routing around each asset in ...
2
votes
1answer
60 views

Network Analyst: Grouping Points by Location

What I am trying to achieve is pictured below, but programmatically. I have a table of 400 locations from which I eyed out an equal amount of points and divided them into 3 routes with Zip Code ...
2
votes
1answer
108 views

How to solve routes to offset points in Network Analyst?

The scenario is that there are points on a grid with intervals of 1000m covering an area of hundreds of square kilometres. I want to find routes on a road network to any one of these points. A road ...
2
votes
1answer
65 views

Displaying Highrise Delivery Routes

I have a geocoded address table for High Rise buildings in New York. If i'm trying to map delivery routes to a number of these locations, what would be the best and most clear way to display the ...
2
votes
3answers
193 views

How to route railcars along railroads?

I'm very new to the world of GIS, but I'm learning a great deal from this site, as well as others. I fell like this should be 'easy' but I need to be pointed in the right direction. I'm trying to ...
2
votes
1answer
291 views

QGIS Routing between two Points without Roads

I'm using QGIS 1.8 and i need to analyze possible routes for roman roads. Is there a Possibility to show routes which comply special criteria, e.g. straightest way between two points, or path which is ...
2
votes
2answers
231 views

Is it possible to get the points used for the convex hull in osm2po?

I have a non-convex hull algorithm that I want to use for an app. With OSM2PO, it's possible to get a convexHull, but is there a way to get the points before the hull is constructed? More, it would ...
2
votes
1answer
143 views

Why is pgrouting astar not consistent?

I route from 1 end of a circular route to the opposite end. Visually it is obvious that going clockwise is shorter, however shortest_path_astar sometimes picks clockwise and sometimes anti-clockwise. ...
2
votes
1answer
243 views

Multimodal route analysis not yielding correct results

I asked this question a while ago about a route in a multimodal network dataset not using all forms of transport available. While the answer worked at the time, I am now in a similar situation again. ...
2
votes
1answer
126 views

Can I Start and End an OSM2PO route in the middle of a road segment?

I need to be able to start and end a route in the middle of a road segment as opposed to a vertex/intersection. I know that you can disable snapping when stating your start/end but the route still ...
2
votes
1answer
141 views

How do you ignore one-ways osm2po?

I've been using OSM2PO and it's a great system so far. However, in version 4.5.2, I can't seem to ignore the one-way restrictions for calculating walk distances. In the browser version, I check on ...
2
votes
2answers
470 views

Should I implement TSP or Dijkstra?

I was asked to create a shortest path algorithm in java to use with OSRM. I want to create a route between some points (normally more than 3). The first one, will be the starting point and also the ...
2
votes
1answer
279 views

Is there a way to route different vehicles within OSM2PO?

Is there a way to route different vehicles within OSM2PO? I would like to start the service with a config file and then turn different flags on/off depending on whether the route is for a bike or a ...
2
votes
1answer
609 views

Routing Application in Windows

I am making an routing web application similar to Google Maps 'Get Direction' feature. But because of the limited control and data on GMaps, I decided to use OpenStreetMap instead. This also made me ...
2
votes
0answers
27 views

When computing flow direction, the D8 algorithm is used - are there major differences if others are used?

I am a student working with Hydrological models. Within these models we can route water across a DEM (within a delineated watershed or just within an un-delineated DEM) using many different flow ...
2
votes
0answers
94 views

Adjusting GPS collected data to a polyline shapefile

I am collecting data from a GPS that is attached to a car. When I display this data in a map, the set of collected points are supposed to match with the street shapefile. However what I see in my map ...
2
votes
0answers
100 views

Constructing a Voronoi diagram using a complicated travel time metric

I have in my possession four sets of shapefiles: 1. Locations (points), around 1000 2. Roads (lines), each road has a speed attribute 3. Terrain (polygons), each zone also has a speed attribute 4. ...
2
votes
1answer
286 views

Batch Mode Routing for Fastest Route Distance

I would like to run a batch process to derive the total driving distance between points, for a largish set of point-pairs. e.g. I would have data something like: Start_ID Start_Lat Start_Long ...
2
votes
0answers
133 views

Get Multiple Shortest Path using PgRouting in One Query

I am trying to get multiple shortest path using A* Algorithm available in PgRouting. I referred Solution given by UnderDark ( Link of the Stakoverflow Post ) . But it is not giving me proper Output. ...
2
votes
0answers
351 views

Driving directions and multi-modal route planning service for a city with OpenStreetMap data

First off I'd like to mention that I've never come close to anything-GIS until a few weeks ago when I thought of this. So please expect some layman's questions. I'm looking to create driving ...
2
votes
2answers
268 views

Reinventing the wheel: Public Transit System

I'm building a public transit service in South Africa, and I initially started the project on PHP and MySQL. I've managed to get far with the simple stack, with: Routing algorithm in PHP Data ...
2
votes
2answers
100 views

How would I go from a set of points representing routes to a set of map tiles for online consumption? [duplicate]

Possible Duplicate: Web-based user editable routing application I have a set of routes as a text file with coordinates. For each coordinate I also have whether or not it is an intersection ...
2
votes
0answers
303 views

Open Source Tools for Swept-Path Analysis?

Before I spend time writing something, does anybody know of any open source tools to perform swept-path analysis (preferably suitable to run on Windows and a Python API would be a bonus)? I pretty ...
2
votes
0answers
116 views

How to fix Graphserver warning “osmdb has no edges!”?

I'm really new to GIS. I have some shapefiles data that I'm trying to import in graphserver. I'm doing: gs_osmdb_compile output3.osm output3.osmdb And the result is: WARNING: osmdb has no edges!. ...
2
votes
0answers
351 views

How to specify attributes for network dataset? [closed]

Using ArcGIS 9.3 to try and create some routes with network analyst... currently following this tutorial: Network analyst tutorial for 9.3 I have a street dataset from NYS clearinghouse. I can't seem ...
2
votes
1answer
134 views

How do GPS receivers map out directions?

Although I've never really dug into it, I've always assumed mapping out directions in a GPS unit is done with A* or Fibonacci-heaps at a higher level and Dijkstra's algorithm for smaller graphs. Are ...
1
vote
3answers
278 views

Is it possible to make a routable graph from Polygons?

I would like to know if it is possible to make a graph with pgrouting 1.05 on polygons. What I mean is that I have to make a graph on a database without roads but with polygon geometry. I would like ...
1
vote
2answers
219 views

How to join polygons and lines vector maps from openstreetmap?

I am struggling with the data format OSM gives me: I want to use OSM data for routing, but all round-abouts and parking lots are not in the lines layer. They are situated in the poly(lines) layer. ...
1
vote
2answers
363 views

How to create a routing application with ArcGIS Server?

I have the task to find out what is necessary to build a routing application using ArcGIS Server. I am not a GIS beginner, but have had no experience with ArcGIS Server. As this project is at the ...
1
vote
1answer
4k views

Computing Shortest Distance using Google Map v3 and Openlayers

How to compute shortest route between two points in google map that user selects and provide all routes from source to destination in Transport system?
1
vote
2answers
33 views

Can 'Source' and 'Target' in the roads table for routing be duplicate?

I am using pgr_ksp for finding multiple paths for single source and destination. I am wondering if 'source' and 'target' in a roads table are unique or not. because when i am doing routing on my road ...
1
vote
2answers
122 views

Do you know a service route calculation to get a route between several points?

I need a routing service with an API callable from a web or desktop application. I have several points: a start, an end, and intermediate points in the disorder. I expect the routing service to send ...
1
vote
1answer
33 views

How to compute drive access to a station based on vehicle origin points? [closed]

I have a shapefile that contains station locations and another shapefile that is the geocoded origins of those who drove to the station. I would like to make a buffer around the station that shows the ...
1
vote
1answer
59 views

Automate map creation for 50k unique routes

I have a table with 50k entries. There is a to field and from field with location in either lat/lng or street address. All these location are in the USA I would now like to automate the creation of ...
1
vote
2answers
105 views

Routing and Travel Time

I wish to generate highways network routings and travel times from trip pairs. The trip pairs are between the centroids of UK census Lower Super Output Areas. For each trip pair (perhaps 5,000 records ...
1
vote
1answer
245 views

calculate costs based on way difficulty

I am using Osm2Po to find routes between two points. I am trying to find routes based on the difficulty specified by the user. Basically, I would like to calculate the cost based on some parameter ...
1
vote
1answer
78 views

Does multimodal network need a physical intersection between a point (terminal) and a line (rail or road)?

I have created a network dataset with rail, road, and intermodal terminals and set up the connectivity so that you can only travel in-between the two at the terminals. Terminals realistically can be ...
1
vote
2answers
45 views

Routing engine that supports right sided pickups

I am using open street maps and I need to incorporate routing in to my application. I know there are various routing engines that I can use, but I have a very specific requirement for the direction ...
1
vote
1answer
80 views

Navigation/Routing in 3D View On Android

I need to build a navigation/routing application in 3D view like sygic, what are the available options if any? Are there any existing open source or proprietary 3D mapping/libraries. I have checked ...
1
vote
2answers
87 views

How to develop a fastest road website?

I need to develop a website to find the fastest road between two points (just like google map) What kind of technologies I need to use? What are the components of this project (database, website, ...
1
vote
2answers
42 views

Does OSM2po handle squares and places?

OSM2po is converting data from OSM to postgresql. But how is it handled with places or squares? Not every places, square has pedestrian way routes on it. But for routing I need nodes and pedestrians ...
1
vote
1answer
57 views

Libraries to navigate and choose path based on congestion level?

I'm trying to develop a system to get best path to travel user based on road traffic (congestion level). Functionality of the system should be provide least congested path for traveler given ...
1
vote
1answer
335 views

Creating routable network table in PostGIS

I am trying to create the routable network table, as per http://underdark.wordpress.com/2011/02/07/a-beginners-guide-to-pgrouting/. Everytime I do it in PostGIS extension, QGIS crashes. The area is no ...
1
vote
1answer
102 views

building opentripplaner gtfs.zip [closed]

I am building a journey planner app using opentripplanner. i have followed their two minutes tutorial in which we just run webapp which uses pre build graph.obj file, it works fine. But in next five ...
1
vote
1answer
263 views

Need to get the ArcGIS Runtime SDK for WPF Routing example to work with my gpk and mpk [closed]

I went through the following two examples to get an idea of how to create a custom, local Routing Task This is a walkthrough that takes you step by step through the creation of your first routing ...