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

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32 views

Distinguishing Road Network according to the ward within a municipality ArcGIS

I have a polygon layer of a municipality containing 14 wards as shown in figure i. I also have a polyline layer of road network irrespective of the ward. The road network have following attributes ...
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30 views

Road Type Symbology Query (non technical)

Does anyone know of a good resource/resources for road type symbologies? I am looking to update the symbology of a Road class layer which has 8 categories. The Road schedule is for Ireland. So a ...
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149 views

Isolating a street segment and assigning it a code

How should I go about making a map of alternate side of the street parking rules (in nyc?)? Does such a one already exist (I can't seem to find one)? If anyone is familiar with the transportation ...
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71 views

Orphan road segments

I am working with OSM road data for a developing nation. Included in the dataset are various small networks of roads that are orphans or islands i.e. not connected to the main road network. For ...
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83 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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93 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 ...
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54 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 ...
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14 views

Is it possible to create a KML to list the road names within a buffer?

I often need to know the road names within a given buffer of a polygon. Is it possible to create a KML that would stick a push pin in the roads and list the name so I could see them all in a drop down ...
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47 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 ...
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137 views

how to select line segments not overlapped by other layer's lines

I have two shapefiles of forest roads (mostly dirt) from different sources, covering the same area. The goal is to build one shapefile of roads that is the composite of the other two. Layer A is ...
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87 views

Identify the direction of traveling road segment

I'm using pgRouting to find the least congested path using time as the cost metric. I am using average speed between two nodes to calculate time taken to travel in a segment. In pgRouting there is a ...
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405 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 = ...
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60 views

Free vector data on paved roads in Africa

I have recently come across vector road data from the Africa Infrastructure Knowledge Program (http://www.infrastructureafrica.org/documents/list/roads). I found these data helpful for three reasons: ...
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58 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 ...
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80 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 ...
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95 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 ...
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111 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 ...
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72 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 ...
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319 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, ...
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237 views

Collapse dual carriageway lines in PostGIS

I have OpenStreetMap data, which represents larger roads (e.g. dual carriageways, aka divided highways) as parallel lines. The question is answered for ArcGIS or Skeletron here, for example using ...
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34 views

distance calculations splitting highways km, toll ways km, and other roads km

Till now I have been able to use MapPoint or Google Maps for a lot of things, specially directions and road trips distance calculations. Today I need again to perform (massive) road trips distance ...
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42 views

OpenStreetMap roads vs lines

I imported OpenStreetMap data of Karlsruhe to PostGis using osm2pgsql. This creates 4 table, one names planet_osm_roads. Sadly this table does only contains major streets. Smaller streets can be found ...
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54 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 ...
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47 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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64 views

Can't edit osm_roads in udig

There is a PostGIS database that has a road network imported from Open Street Map, stored in osm_roads table. For the testing purposes I need to change some road geometry there. I tried to edit it ...
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122 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 ...
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31 views

Cartodb: Linking social data to road color scheme

I am recreating this "smelly maps" project on cartodb. I'd like to create symbology on roads (IE: color roads red,blue,green,yellow) based on the information I am receiving on social media. View ...
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24 views

how to dissolve roads of same levels!

I have a 3D road shape files. Roads are of different levels, highway, primary,secondary and so on. And when i used the tool feature to line i splited every line in every intersection. Now i want a ...
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31 views

How to create a mean centre using a network dataset

I have a set of offices, with the number of workers in each office. I need to find the mean centre of these offices weighted by the number of staff. E.g. the 'centre of gravity for staff.' I have done ...
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33 views

Calculate maneuver details using coordinates

I want to calculate the maneuver details (turn-left, turn-right, etc) from the coordinates array returned by google roads API (I'm using JavaScript). I know maneuver details only returned by google ...
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158 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 ...
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31 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. ...
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38 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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74 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 ...
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106 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 ...
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331 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 ...