Questions tagged [road]

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

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1answer
23 views

Road infrastructure efficiency measurement

Is there any tool/script that shows the goodness of road infrastructure. For example, if you want to compare which of the two cities road network is better.
5
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1answer
86 views

Blending features in QGIS: Approximating road edges for map render

I'm having trouble getting the right render for the tertiary roads and service roads look in my map render. I'm trying to get road edges like in the old USGS topo maps: Notice how the road interior ...
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0answers
40 views

What do these distance numbers mean?

In the picture below, the red line is State Hwy 15, while the lake in the picture is Sooner lake. Please note that the highway intersects the lake several times and is very close to it at a number of ...
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0answers
9 views

Create lines from points that are all offset by or on top of another polyline layer?

I'm tasked with mapping various testing sites around my state. It is quite the task and there are about 500,000 gps points all of which have share a unique identifier if they share the same testing ...
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0answers
15 views

Is there a way to create a line from the average location of points?

I am attempting to create a series of line segments (several thousand, so doing it manually is out of the question) in a shapefile using ArcMap 10.5.1. All I have to go off of is the location of past ...
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2answers
157 views

Divide a polygon into multiple small polygons using a MultiLineString

I'm trying to divide a polygon grid into multiple smaller polygons basis their intersection with a MultiLineString using Shapely. Following code works good for LineString but not for intersecting ...
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0answers
17 views

Altitude information for European highways

I need to calculate the gradient in major European highways. Fot this I need altitude data for each highway, let's say every 100 meters. Are there such kind of data publicly available? If not, I am ...
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0answers
8 views

Postcodes for Roads London

First time asking, couldn't see a starting point to read from. I'm doing a lookup by road name (London) to get the Postcode (first part W1 / WC1H etc), i'm a 1/4 through and it has taken days to do it ...
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1answer
159 views

Place label along line near start and end of line in QGIS

I have four fields managing the numbering of the start and end of road sections. I created two label rules, one for the start and one for the end of the road sections. I set the position of the ...
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4answers
758 views

Extract date, time and GPS position linked to road crossing

I am using QGIS. I have a large dataset of approx a hundred animals and I want to determine the number of successful road crossings and extract the date, the time and the two GPS coordinates before ...
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0answers
18 views

Buffers between center points of irregular polygons

I'm having some problems, I hope some of you have some experience with buffers :) I have the road network of a city (40.000 polygons approx), and I am trying to create a buffer between the central ...
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2answers
32 views

Looking for land value data for anywhere in North America especially for Florida [closed]

I am researching on road alignment optimization. The research goal is to find least cost road alignment between two given points, considering highway codes. One of major costs which I need to consider,...
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1answer
10k views

Generating urban blocks by road centerlines using PyQGIS

I work on cartographic generalization project and I need to generate urban blocks by road centerlines.
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2answers
210 views

Switching road names from uppercase to mixed case in ArcMap?

Our county road data has road names for all roads in the county. In the attribute name field, there are some entries with all uppercase for the road name and some with mixed case. I would like to go ...
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1answer
21 views

Automated Road Link

I have a polyline shapefile of roads of a municipality. Each road has a unique ID (for example AR1002, AR1003 etc.) Now I want to add a field in the shapefile which will contain the ID of each road ...
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1answer
44 views

Computing total road length in fixed radius circle around a point

I have a dataset of a number of points which are plotted on QGIS using their latitude and longitude. Now, I have to find out the total length of roads surrounding each point within a circle of radius, ...
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1answer
16 views

Eliminate line sections in a merge to use Qchainage plug in

in QGis I merged several layers, each containing sections of a road, to show a longer route on a map. Now when I want to use the qchainage plug in the plug in starts the count over again in each '...
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1answer
25 views

Clipping roads based on their county [duplicate]

I have both county shape files and all road lines for the state, but I would like to clip the roads based on what county they are in. How can I do this as a batch or model in the ArcMap application ...
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1answer
75 views

Mapinfo - Compare Road Direction

I have two layers of Road Networks. How do I compare the difference in road direction between the two layers - both are polylines?
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0answers
36 views

pg_routing source and target column issue

I have created pgr_createTopology() function on my road data table which accurately assign source and target to destination road table, but I have an issue when I split a road segment in qgis it ...
2
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1answer
74 views

Layering up road and rail bridges from OpenStreetMap data in QGIS

I am using QGIS 3. I am creating a topographic map using OSM data downloaded as shapefiles. Obviously of I put the railways layer under the roads layer, all railways show as passing under roads. Or ...
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0answers
59 views

How to download all Points of Interest within a boundary from Google Maps

Is there any legal way to download google maps POI information such as number of POIs within a district boundary, using area shapefiles? How about length of roads within an area boundary? Output ...
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1answer
113 views

Calculating average slope using ArcGIS Pro?

I want to rate for ease of walkability for one track, I have a road shapefile and raster of the slope. Any ideas about how to calculate average slope or other methods to do that?
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1answer
167 views

Line at map scale that do not vanish when zoomed out? (QGIS 3.8)

I'm drawing rivers and roads as linestrings with width set in map units from an attribute. When zooming out, of course they vanish quickly, because 10, 20 or 100m is less than a pixel at 1:100,000 ...
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0answers
30 views

Configure shortest path calculation with specific origin/destination points

I would like to calculate the shortest path from a point to another following a network. I'm currently using QNEAT3 for that purpose, but I can either calculate one path from two specific points or a ...
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0answers
52 views

Identifying upside and downside of road using QGIS?

I am a forest engineer and I have to reclassify a DTM in upside pixels and downside ones in relation to a line shapefile indicating skid trails network of the forest parcels. I don't have necessarily ...
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1answer
56 views

Snapping lines together in QGIS

I'm using QGIS 3.8.2. I have a set of lines which represent a road network. However as I have taken different layers from different data sources the lines which represent the same road don't overlap. ...
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2answers
1k views

Creating elevation profile using ArcGIS Pro?

I have one road shapfile and one raster which has surface information How can I combine them and create elevation profile?
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2answers
437 views

Finding a Minimum Spanning Tree using QGIS

As shown in the image I have a road network and the intersections as separate layers on QGIS. What I require is to extract the Minimum Spanning Tree connecting all points along the road network. Would ...
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2answers
367 views

Problem with intersecting lines over a polygon layer in QGIS

I have a shapefile with lines (a road network) and I want to intersect it over a polygon layer in order to finally have a polygon layer (each cell has an ID number) with the intersected lines for each ...
4
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2answers
283 views

Extracting roads shapefiles from old TIGER/Line RT format?

Does anyone know how to extract a roads shapefile for the US Census circa 2000? The only file I can find from US Census (e.g. https://www2.census.gov/geo/tiger/tgrcd108/CA/tgr06037.zip for Los ...
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0answers
48 views

How to measure the distance between two points follow the track?

I have three points shapefile and 1 line shapefile. I tried to use v.distance but it only got directly distance. How can I measure them by track?
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1answer
24 views

Data of left turn signal

I wonder if there is any publically available dataset that has left turn signal information (say, in the U.S.)? For example, in right-hand traffic countries, major intersections may have a left-...
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0answers
22 views

Create shortest route for a set number of units

I am running a field survey and would like to create routes for the surveyors. I have the building lots and road network for a particular city (road in red, lots in blue, with a Google Maps basemap): ...
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1answer
140 views

Styling road intersections

I have two layers with roads of different types I wish to have pretty intersections, as here Symbol levels work only for features in single layer.
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0answers
56 views

Splitting road network into non overlapping segments in QGIS [closed]

I am having a road network shapefile. I want to split it into smaller edges in such a way that each edge consist of two diversions. I am unable to do so. Here n1, n2 and n3 are any three adjacent ...
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1answer
166 views

Removing small segments of geometry from shapefile using FME?

I am working on road dataset on a country level. The gdb contains the entire road network which we have extracted from 3rd party source provider. But the road network which we have fetched ...
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1answer
82 views

Mapping out railways from paper?

I have a physical copy of a map with railways that I want to import directly into ArcGIS (the network of railways), but I have no data on coordinates of any kind (it's a really old map but the lines ...
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0answers
44 views

Determining if Runoff Sinks drain to stream or drain to road?

I've tried using the linked method to determine area that drains to stream vs drains to road. For some reason when I run the watershed tool on the the raster representing stream and road features, I ...
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2answers
49 views

Breaking lines in PostGIS?

I have a roads table and I want to break the lines in the intersections like the v.clean tool from GRASS (I'm talking about how the break tool in the parameters works). How can I do the same process ...
2
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0answers
79 views

Creating a continuous raster road network using Polygon to Raster in ArcGIS Pro?

I have a polygon forest road network that I would like to turn into a raster. I have attempted to use the ArcGIS Polygon to Raster tool, but whenever the majority of a cell falls outside of the ...
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1answer
176 views

Static traffic visualization for certain streets with the help of historical traffic data, in QGIS? [closed]

The goal is to make a static map highlighting certain streets in a city that usually have high traffic (for example, highways and main roads). I am using OpenStreetMap for the city. The streets need ...
3
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1answer
511 views

Digitize objects in a LiDAR point cloud?

I am working with LiDAR point cloud data of road networks. The goal is to digitize all visible objects like hydrants, streets, sidewalks. My input data is available in LAS or ASCII format. My first ...
3
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0answers
159 views

Recognizing when road is uphill and when downhill using QGIS?

How do I automatically recognize and cut roads of a great network in places when the roads are changing the path uphill and downhill using QGIS? I have a geotiff dem. Schematic truck's transport
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1answer
345 views

QGIS 3.2 - How do I join road segments together like they're shown in a Road Map/Atlas?

When I imported any of my Roads Layers ESRI Shapefiles from OS Vector District data into QGIS 3.2 using one of the pre-defined Road Symbol representations, I get a very poor result showing the road as ...
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0answers
110 views

Adding a new link to an existing road shapefile in QGIS [closed]

I have an existing road file of Auckland. I wish to add a new road to the existing shapefile so I can calculate a revised distance isochrone. However, when I add the new link, it is ignored by the ...
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0answers
32 views

Checking if road passes through a trapezoid?

I have a straight road defined by 2 points with latitude and longitude. I also have a trapezoid defined by 4 points with latitude and longitude. How do I check if the road passes through that ...
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0answers
61 views

PostGIS generate lanes for multilinestring map (ST_OffsetCurve)

I currently have a road network for specific area as multilinestrings. It only shows the road as a single line. I would like to generate lanes for that as well, using some kind of offset. The problem ...
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1answer
437 views

Getting width of road segment given its end points using Leaflet?

I want to highlight a road segment on a Leaflet Map. I have the coordinates of the end point of the road segment, so could plot it as a linestring. But the problem is how can I get the width of the ...
3
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1answer
325 views

How to tell if a geo-point is on a road

I am looking for a robust way to determine if a geo point (long, lat) is located on a road I am currently using openstreetmap overpass-api with the following query: way[highway](around:3.0, {lat}, {...

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