A road is a thoroughfare, route, or way on land between two places.

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24 views

Placing road labels only at map edges and road intersections in QGIS

I want to place road labels only near the map edges, and where roads intersect - as depicted by the red X's in the image. Background: I've seen the military do that in their topo maps, and I think ...
3
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1answer
65 views

Issues merging divided carriageways using Skeletron

I would like to merge divided roads from openstreetmap, and a tool that keeps getting mentioned is Skeletron, for example here. I tried the tool on a small geographic area, and the results are fairly ...
2
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5answers
2k 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 ...
2
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1answer
5k views

How do I determine if a road is privately owned or not? (USA)

I'm working on a project where it matters greatly whether or not a piece of land is on a private road. Google Maps in many cases takes private roads (for example in master-planned subdivisions) and ...
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0answers
34 views

Trace tool being very erratic in ArcMap?

Right now I am working on a project where I have a road network, and I have a layer with points on a bus route. I am trying to trace these points along the road network to create bus routes. It was ...
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2answers
68 views

How are section of roads uniquely identified (in both directions) by Google Maps?

I am wondering whether roads around the world are uniquely identified by a certain value in Google Maps? If so, are they mapped uniquely in terms of their direction? i.e is route A to B is identified ...
1
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1answer
56 views

Why doesn't QGIS 2.8.2 Road Graph accept my road network vector?

I'm using the Finnish official Department of Transport's "digiroad" road network vector file, which has all kinds of roads, cycle paths etc on it, but I can't use Road Graph on it. If I create a new ...
4
votes
1answer
142 views

Finding tight corners on roads using ArcGIS Desktop?

Problem: How can I pinpoint tight corners on a road dataset that might cause longer/larger vehicles difficulty in driving around. Assumptions: Ignore turns into junctions. Just interested in ...
2
votes
1answer
273 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 ...
5
votes
1answer
64 views

How to export ArcGIS feature class to Waze?

I've got a geodatabase containing a local municipality road system. I'm looking for a way to export it into Waze in order to improve Waze existing road system. The only way I found so far is to edit ...
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1answer
37 views

Distance between point layers [closed]

I have a point layer with geographic boundaries of an area and another point layer with road network. I want to calculate the distance of each point of road network layer to the points of the ...
0
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1answer
47 views

How to obtain the shape or width of a road in GeoJson

I'm new to openstreet maps and the geojson format. I'm drawing buildings and roads using GeoJson. A Building is represented as a Polygon, thus i can create the proper geometry as needed, but a Road ...
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1answer
76 views

Simplifying road network for cartography?

How do I simplify and merge segments of a complex network for cartographic purposes? As you can see, i have a lots of segments and i want to merge and simplify to looks neat on a scale of 1: 100 000. ...
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0answers
47 views

Is there a way to create a custom, navigable GPS route?

Is there some sort of way to create a custom GPS route that can say, be plugged into a maps app like Google or Apple maps? For instance let's say I created a route that is a drive along Pacific ...
0
votes
0answers
24 views

What are the rectangular black markers shown in the roads of Google maps?

I'm doing some image processing to quantify the connectivity of London's roads. I'm not a geographer or map-expert and I would like to know what are the black rectangular nodes/markers in this map. ...
0
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0answers
37 views

Stopping a route using attributed length

I am working in a project where I need to run routes from several points on a route network and have them stop at a specific length. I have worked out their max distance want to use this attribute to ...
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1answer
26 views

Count roads crossing borders

I am looking for a way to count the number of roads crossing a national border in Europe. If possible, I would also like to decompose this result between regions (NUTS2 European regions). I am looking ...
5
votes
1answer
203 views

Calculating road density in R using kernel density

I have a large (~70MB) shapefile of roads and want to convert this to a raster with road density in each cell. Ideally I'd like to do this in R along with GDAL command line tools if necessary. My ...
0
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0answers
27 views

road network construction using latitude longitude and timestamp

I have gps data(latitude,longitude and timestamp) of a city over a month I want to use some routing algorithms on that data so need to construct road network or graph So how to construct road network ...
0
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0answers
54 views

COGO distortion

I'm trying to input a road center line using COGO, I don't have any experience using the COGO toolbar on any ArcGIS version. I'm currently using ArcGIS desktop 10.2. The road project is roughly 6 ...
2
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0answers
46 views

Identifying Road Crossings

The ingredients: I have animal GPS points separated by a certain amount of time & I have a map of roads... This time could be separated by hours, or days The question: I want to identify a ...
2
votes
0answers
50 views

Best Road Data (for NE U.S.) for Local Network Analyst

My current network dataset is utilizing North America Detailed Streets Layer Package, however, I would like to try out some other road networks to compare the the results. Would need the road data for ...
0
votes
2answers
148 views

Populate cross street name at intersections

Just a follow up of an older post seen here: Python script/Model to populate cross street names at intersections I need to create a shapefile of Road segments with a "To_Road/s" and "From_Road/s" as ...
2
votes
1answer
79 views

How to measure an irregular road line in QGIS?

I'm trying to measure the distance between some coordinate points along a road line from an OpenStreetMap source map, I am using QGIS 2.4.0. My problem is to find a way to measure these distances ...
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0answers
14 views

symbolic display of line direction

I have a vector layer representing a road network that is encoded as a series of directional links. Thus, each is represented by a "from" and a "to" node whose coordinates are known. Is there any way ...
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1answer
121 views

How to split/divide linestrings of larger lengths in postgis

I want to split/divide linestrings in my data. I have roads data and I want to have every road segment having length not more than 250 meter. Check the shape length of this particular line feature. ...
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1answer
149 views

How to calculate highway lengths using QGIS? [closed]

I need to create a network of highways in 8 states of the USA. Eventually, I need their length, the speed and if possible average daily traffic volume, I don't know how to extract this information. ...
0
votes
1answer
40 views

Road network comparisons - how to extract roads that do not completely fall within the buffer

I am trying to compare how well one road network aligns with another - I have created a buffer around the first network and would like to select only the roads from the second network that fall ...
16
votes
4answers
14k views

Creating Centrelines from Road Polygons/Casings?

I want to create center lines from road polygons. Are there any automated tools in ArcGIS for Desktop to do this? I am including a Screenshot of my vector file below.
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0answers
63 views

Divided road segments from XTools Pro need unique, informative IDs

I can divide segments with my road using XTools Pro, but I want to give a useful identifying number to each segment. For example: If D100 road has been divided into 20 segments, the segments must ...
0
votes
2answers
39 views

How to calculate miles of road in street network

I have a road network we use for our city. It has ever single road created and categorized. What would I do if I wanted to calculate the total miles of roads in this network?
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0answers
35 views

How do you restrict road access by vehicle type in ArcGIS Network Analyst?

Is there a way to restrict road access by vehicle type? Some roads restrict trucks, some roads have height/weight restrictions, and some roads are restricted by the type of license plate (e.g., ...
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0answers
26 views

How do you restrict road access by time in ArcGIS Network Analyst? [duplicate]

I was wondering if there's a way to restrict road access based on time of day (i.e., create a time restricted road). I'm familiar with restricting roads based on vehicle weight/height, but time ...
3
votes
2answers
378 views

road density km/km2 calculation

I am trying to calculate the road density in my study landscape. I am using the spatial analyst, and the line density function. By default, the tool is setting a cell size of 3.6km*3.6km, and the ...
0
votes
1answer
67 views

Grass GIS “v.in.ogr”: How to prevent crossing lines from beeing split where they don't share a common node?

I want to import a road network into grass gis to run network analyses. I use "v.in.ogr" to import my road shapefile. The problem is that Grass GIS seems to split every crossing line no matter if they ...
8
votes
4answers
2k views

How to find dead-ends in road network using ArcGIS for Desktop or GRASS?

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 ...
1
vote
1answer
132 views

How to label line features using python code?

I used the following code to label the line features(roads) in a layer.It works in the console, but not by python code(application) It works for the points too. What did I do wrong? Any help would be ...
2
votes
1answer
136 views

Map Matching GPS to Road Network [duplicate]

I'm working on a project for which I have GPS points and I would like to extract the sequence of roads related to those points. I know that this is called "map-matching" and that there is a load of ...
2
votes
0answers
82 views

How to add column to attribute table using field calculator with $length function?

I used the following code to add a separate column to the attribute table with the length of features. from PyQt4.QtCore import QVariant from qgis.core import QgsField, QgsExpression, QgsFeature ...
2
votes
0answers
51 views

inputing road network as nodes and arcs in java

I want to input a road network as nodes and arcs. Some of the nodes are intersections, others serve to describe the shape of the road. Road network should be modeled as an embedded graph consisting of ...
1
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0answers
234 views

How to convert length in Decimal degrees to meters programmatically?

I'm new to qgis and I want to find the length of some roads in a map. So I used the following code, from shapely.wkb import loads def getLength(): layer = ...
2
votes
1answer
60 views

How to find length of a discontinued line feature

I wanted to find the length of features in a road layer. So I go through each feature in the layer and used, line = feature.geometry().asPolyline() to find the points which particular feature is ...
3
votes
0answers
114 views

Calculating length of road network within a polygon [duplicate]

I have a road network stored in a gdb and some polygons in another gdb. I want to populate an attribute for each polygon with the total length (in km) of the road network that it overlaps. Any idea ...
1
vote
0answers
28 views

Routing and OpenLayers: How would you connect a point to another through a 'road' node? [duplicate]

So my question is in a routing application,probably using osm as base layer, how do I get a line-string that goes through the road and not directly from one point to another? Is there any ...
3
votes
4answers
163 views

UK road network dataset

Can anybody guide me to a website or a source to download the Geographical UK road network data set. The data set should include the road distances, since I want to apply shortest path search ...
3
votes
2answers
117 views

Script for numbering roads based on Cardinal Direction

I am kind of new to python, and am attempting to write a script that will give me a unique identifier for roads based on the cardinal direction. Ultimatley, I would like to have a system set up such ...
2
votes
0answers
217 views

Create circles around a point on a map measuring the radius in hours

Disclaimer: I am not experienced in GIS and hope this question fits in this category. I was wondering whether it is somehow possible to create a circle* around a city, using Google Maps or the like, ...
7
votes
2answers
987 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 ...
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vote
1answer
46 views

What's the best way to merge various road data into a single layer?

My company has two different road layers: 1) County roads 2) Old CAD roads Each with their own pros and cons. I'm attempting to merge these into a single road layer that will be maintained. The ...
2
votes
2answers
105 views

how to get a low level road network from openstreetmap data?

I've extracted the road network of a city from openstreetmaps (filetype: osm). One part of the road networks look like this: However, there are too many details in this data. I'd like to represent ...