0
votes
0answers
21 views

QGIS Street graph using from and to coordinates from a table(excel) [duplicate]

I am wondering if it is possible to give the Street graph Plug, in QGIS, a table with from(x,y) and to(x,y) coordinates, instead of "picking" them by hand? I need the shortest distance, in ...
0
votes
2answers
130 views

Road Graph Export Empty QGIS

Exporting the results of a shortest path analysis through the Road Graph plugin in QGIS 2.0.1 results in an "empty" layer. After running teh shortest path calculator, I selected export --> new ...
1
vote
0answers
66 views

Exporting flow routes from SAGA-GIS

In SAGA-GIS I have created a grid for channel direction with Arc D8 direction format. I'm wondering if I have another grid with each cell in the channel network labeled with an id number (0,1,2,etc) ...
2
votes
1answer
126 views

How to clip roads to exclude those within a flood zone?

I have OSM road network data in QGIS along with a shapefile showing the possible extent of a flood. My question is: is it possible to exclude all of the roads that are in the flood zone (so as to ...
4
votes
2answers
353 views

Calculating distance and/or time taken to travel from population centre to nearest hospital in QGIS

I'm trying to find out how long it would take to travel by car from each of the Lower Layer Super Output Areas (LSOA) in Norfolk, England to the nearest Hospital (or just what the distance is and I ...
1
vote
0answers
100 views

travel survey multi stop routing problem

I have a travel diary survey dataset that I am attempting to transform into more useful information. Currently, the data comes in the format of: Survey# , PlaceVisited#, TravelMode, TripPurpose, ...
1
vote
0answers
110 views

Looking for best practice to connect multiple road vector line layers for routing (pgRouting) purposes

The Data I have: Bridges (line layer) Municipal_roads (line layer and does not include information in Bridges) State_roads (line layer that doesn't include Municipal_roads or Bridges) Question: ...
0
votes
2answers
185 views

Emergency Services: How to optimize routing by measured travel time?

I would like to optimize the service areas / catchment areas for an emergency service. Therefore, I have several measurement points on the streetmap, where people have stopped the travel time from ...
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 ...
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 ...
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
1k views

I need QGIS routing plug-in [closed]

I am new to pgrouting. How does it work? What benefits can I get from it? I tried the examples, read some articles, but could not find the QGIS routing plugin for Windows. It is not showing up in the ...