The road tag has no wiki summary.
0
votes
0answers
46 views
Display colour coded road traffic data in QGIS
I would like to colour code a shape file containing road polylines to represent the heaviest flows of traffic. The shape file contains attribute data linked to each section of road where road traffic ...
0
votes
1answer
99 views
Leaflet Polyline with custom fill pattern
I'm drawing Lines with leaflet.js an have to create custom styled polylines.
So i got various image files which should be like a repeated background image in HTML.
So is it possible to give a drawn ...
1
vote
2answers
64 views
Identify points near roadside in QGIS
How do I create an attribute list from points that run along roads in a shape file containing road data? The points don't intersect the road centre lines and are not consistent in their distance from ...
1
vote
4answers
165 views
Counting road intersections and blocks
I have a shp file that consists of the road system of Mexico City. I would like to count the number of road intersections (crossings) and blocks (which I would define as a segment starting from one ...
4
votes
0answers
33 views
Showing snapping error in ArcGIS Online
I am doing some test in ArcGIS online to know how much helpful it is for my firm, But when I opened my road line .Zip shapefile in ArcGIS online it is showing some snapping issues as well as changed ...
6
votes
1answer
217 views
Open Source solutions for building a Traffic Management System
I am trying to set an Open Source alternative to proprietry ITS (Intelligent Transportation Systems) The goal is to build a Traffic Management System for a middle size city center. Main requirements ...
3
votes
2answers
85 views
Are there any examples of using GIS in Civil Engineering construction field?
At the moment I am thinking "How to use GIS when construction HighWays,Buildings,pipe lines etc .
Is there any way we can utilize GIS for Civil Engineering construction industry to increase the ...
1
vote
1answer
65 views
ROAD COORDINATES Data (CARDIFF)
Does anyone know how to get road coordinates data from openstreetmaps?
I know its possible I just don't know how.
Thank you!!
13
votes
2answers
240 views
How can I merge/collapse nearby and parallel road lines (eg. a dual-carriageway) into one single line?
I have a shapefile from OSM which contains all the roads within a city. Larger roads (like dual-carriageways) seem to have 2 parallel lines. I'd like to collapse / combine those into 1 line so I can ...
4
votes
4answers
191 views
How to Find Dead-ends in a Road Network
I'm trying to remove all the dead-end roads in a road dataset (lines) that are less than 100m long.
How do I identify roads that are dead-ends (no exit)? The 100m part is easy. I know how to use Arc ...
3
votes
1answer
163 views
Where can I find High Quality Road Network Information
I am carrying out a research on how complex city road networks get and I need to get accurate map information.
I started with openstreetmaps however I ran into a couple of issues: some of the dumps ...
1
vote
1answer
130 views
Create buffer-lines in QGIS alongside Vector lines
I am currently doing a map of a farm, to see which roads needs to be repaired.
Those roads are either one sided fenced, on both sides fenced or not fenced at all. I want to make buffer lines around ...
6
votes
2answers
141 views
Extracting roads out of Landsat raster images
For a study into the expansion of road networks in the rainforest I am trying to extract roads out of Landsat images. We already have sharp and cloud-free composites on which the roads are clearly ...
5
votes
2answers
221 views
How can I make segmented roads appear as one line?
I am footling around with Quantum GIS and the British OS Strategi dataset. If I render the roads with a simple line style they look fine:
However, if I apply something slightly fancier, it looks ...
0
votes
0answers
83 views
Road Graph Route not Touching Start and End Points
I am trying to find the distance between 2 points using Road Graph. After I enter the points' coordinates and hit calculate, the route comes up but is not touching either point, and usually it is not ...
2
votes
1answer
133 views
How to extract a single road from OSM GIS Database?
Is there a way to extract a single row out of the OSM-GIS-Database (by a Query).
It would be so much easier, if I could find an EER Model of the Database.
I was searching a long term and found very ...
1
vote
1answer
146 views
Small Idea to get best path between two points
Guys I don't know if its a good place to post ideas or to ask general questions. Still as the question is related with maps service, I am posting it here. If it's not the right place, please move me ...
3
votes
0answers
328 views
leaflet - Drawing line following the road
Short version:
What I wish to be able to do is drawing a polyline along part of a road. In that way marking certain houses, along this road.
Long Version:
I have several houses that I wish to mark ...
0
votes
1answer
117 views
PostGIS Implementation of Brabyn and Skelly Road Network Travel Time Model
Is there a PostGIS implementation of the Brabyn and Skelly road network travel time model for the New Zealand road network? This model is outlined in:
Brabyn L, Skelly C. Modeling population access ...
1
vote
0answers
78 views
How to relate Slope map and Curvature map so as to have in the end PERCENTAGE PROBABILITY MAP?
i am trying to deal with road detection this last month. So i am working with particle filtering that produces particles, that means possible targets(to my case cars)/points, with hidden information ...
2
votes
0answers
269 views
How to design a road with a certain slope
Is there a way that you want to connect two different points of altitude with a constant slope of 7% or another, to draw a line in the 3D model?
2
votes
3answers
200 views
Get the LatLon of middle points of a road segment?
Suppose I have the LatLon of the two end points as well as a small number of middle points of a road segment.
What is the best way to calculate the LatLon of a middle point P of the road segment ...
2
votes
1answer
163 views
Sources for California roads data
I need a California roads network suitable for building a network dataset and routing to 120 locations. It needs to at least cover the Northern half of California. 2010 Census roads need alot of ...
5
votes
2answers
581 views
US Tiger or Open Street Map Route Data: One Way Street & Intersection Data
We're building a U.S. street routing application (finding paths for cars between two or more locations using public roads) and would like to use open source data US Tiger Data or Open Street Map or ...
6
votes
2answers
1k views
Segment road network line shapefile into new equal length segments line shapefile
I would like to subdivide a road network for an entire state into segments of equal length. So, Highway X would be divided into 0.5 mile segments, with a record for each segment, and Highway Y would ...
2
votes
1answer
1k views
What does the code RTTYP represent in the USA Tiger road files?
I'm trying to figure out what a particular code represents in the US Census Tiger Line files for roads. I downloaded roads for the US from here. I've searched the documentation (link to large pdf) and ...
