Questions tagged [road]

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

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Distance to the nearest hub but determined by the road network

I'm just learning QGIS. I have a point layer of localities. A point layer of specific POIs. Linear layer of the road network. There are approximately 40,000 towns and approximately 5,000 POIs. I would ...
jdsz's user avatar
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How to get the centerline of a polygon without artefacts in Python?

I am using Python to obtain the central line of a polygon (blue line) which represents the contour of a road (red line). To do so, I have used the Centerline library as shown below: from centerline....
Covadonga Prendes Pérez's user avatar
1 vote
1 answer
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Getting roads which are missing bike lanes using Overpass Turbo

I would like to extract roads which are missing bike lanes so that I can map them with Photo Mapping software. With my query below, I am able to fetch roads which are missing the cycleway tag. ...
Paradox's user avatar
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7 votes
2 answers
200 views

Defining extent to limit labeled area in QGIS

I have a road layer and "NAME" field. I activated labels, but I don't want to show the labels outside the raster in map canvas (not layout). The raster area is my study area (you can see a ...
Kadir Şahbaz's user avatar
1 vote
0 answers
57 views

How to create a road graph using PostGIS

There are many cars with GPS transmitters that drive along quarry roads. These are temporary roads, they change frequently and not on the maps. GPS data is not very accurate, outliers need to be ...
zhb.hodas's user avatar
1 vote
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76 views

Creating list of unnamed roads on Google Maps and match them with own road dataset

I am looking to update Google Maps road network in my city, but it seems I can't find the unnamed roads so I can quickly find the matching roads in my dataset that has names for both old and new roads....
Baptenda's user avatar
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ArcGIS Pro 3.2 fill gaps line section using another line layer

I extracted two lines layers of road condition. One was surveyed when the roads were dry. The other layer is when the roads were wet. The dry layer has some gaps And I want to fill these gaps with the ...
GIS Noh's user avatar
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How to calculate a specific distance along a multilinestring from a specific point in QGIS

I have a shapefile of a road network and another one with some points. What I should achieve is calculating a fixed distance (e.g., 10 km) in all directions along the road network, starting from the ...
Vale's user avatar
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In osm2pgsql flex output, many road types I retrieve are highway: construction? How do I find what road type they are?

I am using pgosm-flex to load in the OpenStreetMap OSM files for many files. I then passed in many (latitude,longitude) points to get the nearest road type to those points. The query works, but the ...
Vivek Reddy's user avatar
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1 answer
37 views

How to avoid duplicated roads?

I am exporting a map as an svg into illustrator and finding there are many roads that are duplicated but in different layers, is there a way to avoid this?
Nathan's user avatar
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How to edit quickOSM map presets?

I am having issues using the quickOSM urban map preset and was hoping there was someone who could point me in the direction of a different preset or if there is a simple way (I am new to GIS so the ...
Nathan's user avatar
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2 answers
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Buffer coming out to be a circle

I have been trying to make a buffer for the roads but the buffer is coming out to be a huge circle. Both the project coordinates and Shapefile coordinates are the same. Any pointers on how to solve ...
Rucha's user avatar
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50 views

Unable to get the road network distance between two points in PostGIS

SELECT sf.id, sf2.gid, SUM(ST_Distance( sfroads.geom, ST_LineInterpolatePoint(sfroads.geom_latest1, ST_LineLocatePoint(sfroads.geom_latest1, sf....
Badboy's user avatar
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1 vote
1 answer
107 views

Create road edge network (footpath) using existing road centerlines including junction lines

Currently I have roadcenterline data at hand. On my project, I need to digitize the road edges and importantly the junction lines in intersections and T-Junctions. See image below. (Desired output) ...
Suzuha Amane's user avatar
2 votes
0 answers
25 views

How to dissolve links and split by other links

I am trying to aggregate road network segments by intersection using QGIS. The blue route consists of 1000 links, and I want to aggregate this route into two segments. Ex: first and second segments ...
eun lee's user avatar
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Adding missing road lines to base data using ArcGIS Pro

I have a master base road dataset, in the attached picture they are red lines. A second dataset of roads needs to be added (yellow lines), but only where we are missing a road. The two datasets ...
forestGIS's user avatar
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-1 votes
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Official road and rail networks of Brazil [closed]

I am looking for the official road and rail networks of Brazil, produced by a government department. I haven't been able to find it on the IGBE website and the Humanitarian Data Exchange utilises a ...
Bichael's user avatar
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Learning How to Use Road Network Files

I am interested in learning how to work with Road Network Files in R. For example, I would be interested in finding out the driving distance between the following two (Canadian) addresses: CN Tower: ...
stats_noob's user avatar
2 votes
1 answer
110 views

Identifying international crossings in OSM

I would like to identify international crossings between Italy and Austria in OSM, regardless the type of road. Is there a way to identify such points using QuickOSM or should I do it manually, using ...
Geo_it's user avatar
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3 votes
1 answer
53 views

Cutsom ST_Multisplit function returning more than one split line. How to only return one line split at various points?

I Have a modified version of the function from How to ST_Split features in one table by features in another? CREATE OR REPLACE FUNCTION ST_Multi Split(geom Geometry, blades Geometry) RETURNS Geometry ...
Ian23's user avatar
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1 answer
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Building roads on steep slopes with QGIS [closed]

I work in forestry and want to get QGIS to generate a vector line that doesn´t exceed a certain road slope. I can get it to tell me what the slope is on a road I draw myself, but how can I just insert ...
Philip's user avatar
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Road Emission Calculator - QGIS plugin

I managed to install the Road Emission Calculator plugin in earlier version of QGIS. Unfortunately, it's not showing me results. Had anyone tried this plugin?
Dawit Baye's user avatar
3 votes
1 answer
2k views

QGIS - Shortest Path (Layer to Layer)?

I have 2 data sets that I need to measure the distance between using road lines: In this example I want to connect the red points to their nearest blue point. Whilst this is easily done with a single ...
Jay7737's user avatar
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1 vote
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296 views

QGIS Geometry Generator make_line using road network

I want in QGIS 3.22 Geometry Generator to connect related points with a line, but the line must go between the points along the shortest network of paths. I have two layers: one is "points" ...
Rii Pii's user avatar
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1 answer
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How do I ignore artificial landscape (e.g., pavement, cars, buildings) in order to classify features of the natural landscape (e.g., veg cover, soil)? [closed]

I want to classify the landscape into different classes, in order to identify areas with low veg cover and bare soil. Unfortunately, any of the classification tools I use will recognize pavement, cars,...
USJoeS's user avatar
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0 answers
31 views

Select values from noise contours across one road stretch

I have a map of noise contours across a city and am using ArcGIS Pro. I want to select one road (not straight) and export the noise values along that road to a table but I'm having trouble selecting ...
speck's user avatar
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0 votes
1 answer
32 views

Select values of noise contours along one road

I have a map of noise contours across a city and am using ArcGIS Pro. I want to select one road (not straight) and export the noise values along that road to a table but I'm having trouble selecting ...
rwog's user avatar
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60 views

PgRouting Create network isn't splitting on intersections

I've started working with PgRouting, I have a custom road networks inside of a linestring geometry table. I'm currently trying to create a Network for routing, the 70% of the routes are right, but ...
alexdemons2000's user avatar
1 vote
1 answer
68 views

Reclassify raster based on the width of same value neighboring cells

I have a binary raster that indicates the presence and absence of roads. What I want is to classify the roads in at least two categories (width=16pixels (the horizontal road in the example) and width =...
Yves's user avatar
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1 vote
1 answer
317 views

Seeking ArcGIS Pro tool that calculates distance from different points to another feature class with multiple distance along road network

Is there a specific tool that calculates the distance from points feature class to another points feature class? I have a data set containing forest compartments (point), customer destination (point), ...
scumbagsurfer's user avatar
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33 views

Finding distance and attributes from one feature to another?

My goal is to have a final parcel layer include fields containing road name and distance to the nearest road segment. I'm using ArcMap and tried running the Near tool but it only returns distances. ...
Krizzle's user avatar
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2 votes
0 answers
170 views

Distance along line network between set of points to set of hubs

I am trying to measure distance between towns (light grey in attached screenshot) and their district capitals (light purple) along usable roads (dashed blue). I used the GRASS v.distance plugin to ...
Diana's user avatar
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1 vote
0 answers
39 views

How to keep roadnetwork attributes by cutting it to a service area in QGIS?

I extracted a road network including attributes (e.g., categorization of different types of highways) using QuickOSM. My goal is to cut this original road network to a 50km drivable radius from a ...
Keni's user avatar
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1 vote
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68 views

Route direction based on road width?

I have road polyline data that contains a road width field (in meters) and I want to visualize road direction, based on this road width field. The road direction that I mean is kind of like this: (...
leemu's user avatar
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-1 votes
1 answer
485 views

Editing a WMS layer

For a school project, I'd like to represent the public transport network of our city (using QGIS). I found a WMS layer from an official source, but some bus lines are missing, and others don't exist ...
Nemo's user avatar
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1 vote
1 answer
737 views

Buffering roads leads to one big circle in QGIS

I am trying to create buffers around specific roads I am working with. I carried out the following steps: I highlighted all of the roads: I set out to create a buffer zone. The buffer was created. ...
HamidBee's user avatar
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3 votes
1 answer
680 views

Representing roads consisting of polylines as polygons in QGIS

I am working with some roads in London that I downloaded online. The roads are represented as lines like below: How can I transform each road from a line into a polygon in QGIS? So that the roads ...
HamidBee's user avatar
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1 vote
1 answer
2k views

Extract nodes and edges as road network from osm.pbf file with python

I have downloaded the israël's osm.pbf file from geofabrik. I want to extract the road network's country, which means a list of edges between two nodes ids. For a such tiny country, this list should ...
hans glick's user avatar
3 votes
0 answers
40 views

Adding minimum margin between roads in QGIS

I'm wondering if there's a way to add a minimum space between roads that are too close together in a map. Accuracy is not my goal, I just want to make it visually as clear and clean as possible. Could ...
David Martins's user avatar
1 vote
1 answer
317 views

Identifying road intersections in QGIS [closed]

I'm currently in a project where I need to identify whether the road exist in an intersection or not. However there are 700 roads which is a hassle if I do it manually. Is it possible to identify ...
Chubby Dayandayan's user avatar
2 votes
1 answer
122 views

MultiPolygonZ to nearest line using a road network (or: how far is the next highway from a project site?)

I have a MultiPolygonZ layer of Project Sites (ca. 700 features, mostly 1 polygon per feature) and want to get the shortest distance on a road network to the nearest subset of a line layer, e.g. the ...
axre's user avatar
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1 vote
1 answer
340 views

How to use SDO_LRS.OFFSET_GEOM_SEGMENT to offset a line in Oracle Spatial

I am trying to offset a line perpendicularly by a few metres (it follows a road and I'd like to move it to one side of the road). The line is an SDO_GEOMETRY object of SDO_GTYPE = 2002 (LINE/CURVE). I ...
Simon Notley's user avatar
1 vote
1 answer
406 views

Merging highways with two strokes into single path using QGIS

In QGIS some of my vector layers (shapefiles) for roads have two paths. For highways, I assume this is for divided lanes, but I only want a single path to make it easier to style in Illustrator. How ...
Jess Zimmerman's user avatar
0 votes
0 answers
162 views

Labelling minor and major streets for entire city on layout using ArcMap

I've been trying to create an ArcMap layout which shows intersections in a given city alongside the names of minor and major streets. Currently, I have the intersections properly placed and I have a ...
Alex Ristic's user avatar
1 vote
1 answer
46 views

sDNA - cycle model based on start and end elevations rather than 3d shapefile

I want to run a cycle roundtrip model in sDNA. My file is a road center line (RCL) map, containing z coordinates (start Z, end Z - image attached). The RCL vector file is shown by GRASS GIS as 3D, but ...
SPet's user avatar
  • 141
2 votes
1 answer
89 views

Road network division and best maintenance facility location using ArcMap

I am using ArcMap. I have a national road network and I would like to divide it in several zones, so each zone would get the same amount of roads (from 150 to 250 km) - to get as equal zones as ...
Lakierski Materialski's user avatar
0 votes
0 answers
41 views

Roads randomly segmented

I've encountered a problem I'd like to fix. I have two shapefiles that are in essentially the same spot. (Road Centerlines) We had a company run an analysis of the road quality. When they gave us the ...
Dano0430's user avatar
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1 vote
1 answer
291 views

How to batch calculate vector layer road lengths in QGIS?

I'm trying to calculate the road length for hundreds of layers, each one being a small road vector layer. I usually follow the process at https://www.qgistutorials.com/en/docs/calculating_line_lengths....
Ben Hendel's user avatar
0 votes
1 answer
109 views

How to do pgr_analyzeoneway pgrouting

I try to do pgr_analyzeoneway to my network road data from OSM. But there's some parameter that I don't know what I should input event though already read the example: s_in_rules: text[] source node ...
astaga's user avatar
  • 123
0 votes
2 answers
2k views

Calculating road travel distance between point and polygon layers [closed]

I am trying to calculate the top three shortest distances from a point file (buildings) to a polygon file (designated natural areas) via road networks. I basically need the "Join attribute by ...
keenwild's user avatar

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