Questions tagged [road]

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

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5 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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31 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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46 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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20 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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48 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
42 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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1answer
46 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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1answer
108 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
109 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 ...
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2answers
122 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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47 views

How Google Maps get the Speed Limit Information?

Google maps started showing speed limit information in certain areas in the U.S. as featured in this article I'd like to know how Google maps get the speed limit information? My guess is Google gets ...
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38 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
19 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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21 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
94 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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51 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
106 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
70 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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250 views

Get the nearest distance between two points in a road network using GDAL/Shapely/NetworkX

I want to measure the distance between two points in a road network like this: I have the road WKT and also the points WKT. I know that I can measure this using QGIS (road graph plugin) or PyQGIS, ...
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38 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
43 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 ...
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52 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
118 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 ...
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1answer
330 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 ...
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122 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
182 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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83 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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29 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
47 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
260 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 ...
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1answer
208 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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1answer
60 views

OSM database and congested roads

I'm using San Francisco OSM database, which contains the name of each edge, the id source and id target of each vertex. I need to use the information of the most congested routes in San Francisco, but ...
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45 views

Seeking automated approach for categorising roads according to their designs using QGIS?

I have a shapefile comprised of polylines. The road segments are represented by lines that are between nodes. I want to categorise each road segment accordingly as they appear either as a straight ...
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101 views

Showing cumulative load by road segment using QGIS?

The picture shows the forest roads where wood transport is carried out by trucks. From polygons, logs (wood) are collected near roads and then transported. How do I show or sum cumulatively ...
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1answer
144 views

For each row of GPS coordinates, get value from nearest road to coordinates and copy to said row using PostGIS? [closed]

I have two tables in my database; one contains a set of GPS coordinates of a car which have been converted to geom, and another containing Open Street Map road data, including the speed limit for most ...
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1answer
170 views

Identifying road segments completely cut off by polygon using QGIS?

I have a road network (black line) and I want to identify all segments that are completely cut off by my flood polygon (blue polygon). I have clipped the road network to get all roads within the road ...
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73 views

Creating center-lines from amorphous-shaped polygons? [closed]

I would like to create road-center lines for amorphous-shaped images as in the example. void area is shown with white and solid area is shown with black. So I would like to create a center-line for ...
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1answer
203 views

How to join attributes of points with several overlapping polygons?

I am making a road atlas using QGIS, where the pages overlap: I would like the intersection of the roads and the edge of each atlas page (for example, Point A and Point B) to tell which pages you ...
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79 views

Speeding up workflow of generalizing OpenStreetMap road data?

Whenever I want to use OSM data for medium scale maps (e.g. 1:200.000) I run into problems. On the screenshot below one can see the orange street that goes from north to south. It has the attribut ...
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2answers
430 views

calculate slope of lines between nodes?

I need to calculate the mean slope of roads between nodes with QGIS. I have a DEM and a vector (PostGIS) with the roads, nodes are additionally displayed as point shape and also contain an elevation ...
2
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1answer
193 views

Applying merge policies when merging features in same layer using ArcGIS Desktop?

I am trying to figure out how to merge line features within the same feature class such that particular fields will be summed. For example, in the following picture I have two lines that I wish to sum ...
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1answer
86 views

breaking road segments based on another shapefile in QGIS [duplicate]

I am using QGIS 2.18 and have a road celterline and a grid shapefile which I am using to create an atlas book. What I want to do is break each road at the edge of each grid that it crosses but I have ...
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2answers
92 views

How to calculate the distance between point and a polyline along specific direction? [closed]

I want to find the closest road for point star. By using the Near tool in ArcMap, I can get the closet distance a since the closest road is road 1. However, following the red arrow direction, the ...
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1answer
63 views

How are OpenStreetMap ways linked?

I'm using OSM API (overpy and overpass using Python3) to extract toll roads "toll=yes" in a certain search area (e.g. searchArea = California). The API spits out all the tolled ways in CA split into ...
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2answers
604 views

GIS roads data with maximum speed limit

I'm looking for street/roads data in California with maximum speed limit attributed. TIGER data doesn't have the speed limit data, and open street map data is only attributed at about 25%. I'm looking ...
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2answers
111 views

Find road network lines that don't intersect

in ArcGIS,am looking for a quick way to show the roads that don't intersect
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1answer
160 views

How can I classify GPS points with road type?

I have a road database in .osm.pbf format; I want, for a long list of GPS points, to classify whether they fall on (with a margin of, say, 20m) Highway: motorway, trunk, motorway_link, trunk_link ...
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54 views

Road Network Accessibility

I am working in qgis with 3 layers: one is road network and other is hospitals and locations of accidents , later two layers are as points, I want to figure out what accident location (points ) are ...
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2answers
97 views

Search and zoom to street stretch: By NAME, FROM, TO

I have a streets feature class that has name, from, and to fields. Using this feature class, I want to zoom to locations such as these: Main St, from 1st Ave to 2nd Ave (single feature) Main St, from ...
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0answers
42 views

Joining multiple GPS traces to a road

I have multiple GPS traces (polylines) from cars. I would like merge them somehow to create roads. I don't have access to maps in this solution so basically I'm trying to create a poor man's map, with ...