Skip to main content

Questions tagged [nodes]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0 votes
0 answers
21 views

V.Net.Salesman Unreachable Nodes at Intersections

I'm designing a network that has a layer of locations and a layer of street segments. I need to design a route to connect these locations along the street segments using the shortest route possible. ...
Michael Dinh's user avatar
1 vote
1 answer
63 views

Counting outgoing links connected to a node [closed]

I've a large linear shape and I need to find all nodes with class >=3 connected to at least two outgoing links. It's actually a sewage graph, I'm trying to identify sewer dividers. I have read ...
pelino's user avatar
  • 13
2 votes
2 answers
39 views

Direction arrows (or lines) at node

I've got a set of lines "passing through" a node. The passing links are directional (not all possible combinations) I want to make arrows (line with marker) for each node to display what is ...
svn's user avatar
  • 101
0 votes
0 answers
48 views

No path found between two points

I'm trying to find a path between different pairs of points, But within the thousands of pairs tried only a few actually result in a path. I find this odd but maybe it's normal. (note that when I'm ...
Élie's user avatar
  • 1
4 votes
1 answer
571 views

Retrieve map matched ways (and not just nodes) using OSRM and Overpass API

For my question I have prepared a jsFiddle demo requiring you to click at the map 5 times: If I understand this correctly, the OSRM does not care about ways. It only cares about nodes and their ...
Alexander Farber's user avatar
1 vote
1 answer
951 views

Overpass API query to retrieve way ids given a list of node ids

Given a list of node ids returned by an OSRM map matching query I am trying to find a list of corresponding way ids: {"nodes":[384845483,3831831361,2628299968,502266756,346268605,373873712,...
Alexander Farber's user avatar
2 votes
1 answer
129 views

Nodes returned by OSRM map match service not found in the PostGIS database

The call to OSRM map matching returns a list of nodes: {"code":"Ok","matchings":[{"confidence":0.000854076,"geometry":{"coordinates":[[8....
Alexander Farber's user avatar
0 votes
0 answers
96 views

Issue with xml.etree.ElementTree while writing GeoPandas nodes data into OSM format

I have sample nodes data like below. I am writing geopandas into osm data using xml.etree.ElementTree but the end output is not matching the nodes format that is described in osm data. Actually at ...
data en's user avatar
  • 145
1 vote
1 answer
41 views

Name arcs and nodes of a network of roads using only roads names

I have a network of roads composed of arcs (segment of road connecting two intersections) and nodes (intersection of two or more roads). Each road, which is composed of one or more arcs has a name (e....
Michele Cordini's user avatar
0 votes
0 answers
31 views

Converting shapefile to digraph [duplicate]

I have used '''nx.read_shp''' for converting shapefile to network, but the result I am getting is quite different from how the actual shapefile looked like.
abhiram manoj k v's user avatar
1 vote
0 answers
65 views

Removing nodes of polygon inside other polygons in QGIS

I have a shapefile with numerous errors of this type (see img. 1), i.e. polygons inside other polygons consisting of a few nodes. I have tried repairing the geometries with the tool and it doesn't ...
Leonardo's user avatar
  • 317
2 votes
1 answer
793 views

Counting nodes and edges in road network

I have a road network 'TR_ROAD' with EPSG:4283 crs and 1219 features. Based on geospatial theory, the road network is combination of nodes and edges. I am trying to count the number of nodes and ...
Case Msee's user avatar
  • 855
0 votes
1 answer
1k views

Seeing which node has given node ID in osmnx [closed]

I have been reading the documentation on OSMnx and I am trying to use the command osmnx.shortest_path(G, orig, dest, weight = "length") on a graph of a city. I know which nodes I want to ...
Lucas Silva's user avatar
4 votes
1 answer
347 views

Deleting more than one node at once in QGIS

I would like to delete some nodes in my layer. I've got them about 50 or even more. I found some solutions here: https://www.youtube.com/watch?v=lbgmNXXJCzA&ab_channel=JustinAdler How can i ...
Geographos's user avatar
  • 4,039
1 vote
0 answers
1k views

Connecting nodes to existing network lines using QGIS

I have road network (polyline layer) and point layer: I am trying to connect nodes to the existing network lines. I able to connect nodes with lines using connect nodes to lines in Networks in QGIS ...
Case Msee's user avatar
  • 855
4 votes
1 answer
662 views

Changing the order of the polygon's nodes using the geometry generator in QGIS

How can I, using the geometry generator, change the order of the polygon's nodes, starting from the most northerly node in QGIS?
Ilton's user avatar
  • 41
1 vote
1 answer
152 views

Adding multiple Dom Nodes in Content

I am using a popup on my mapView from arcGIS API for Javascript 4.17. When the user opens the popup, I have set the following attributes: view.popup.open({ // Set the popup's title to the ...
gwydion93's user avatar
  • 1,903
2 votes
1 answer
625 views

Generate node / vertex at starting point of line connections

I have line and point layer. I connected line layer with points using connect nodes to line in processing toolbox. After creating a connection line (green color), I used line intersection from ...
Case Msee's user avatar
  • 855
6 votes
1 answer
310 views

Adding nodes automatically without clicking the mouse

Is there a way in QGIS (or maybe in another GIS (ArcMap, for example))) to automatically create nodes at a given interval when digitizing a raster? For example, I decided to create a Polyline object. ...
user13892757's user avatar
5 votes
1 answer
1k views

PgRouting : Shortest path starting from the closest vertex not the closest node

I am currently working on a routing solution with PgRouting (Dijkstra's algorithm), but the shortest path it creates always start from the nearest nodes generated from the edge table, and sometimes ...
Ismail's user avatar
  • 113
0 votes
0 answers
129 views

Polyline node order

I was looking for a tool/mechanism for determining node order in a polyline shapefile. For this exercise, node order would be the number of polylines attached to each node. A dangling node would be ...
Carl Brydon's user avatar
1 vote
0 answers
24 views

Online source of polygon nodes for individual newly created zipcodes

When a new zipcode is created it would be very convenient to obtain its polygon nodes from an online source, without having to download a national dataset. Does an online web-page or web-API exist, ...
Tim's user avatar
  • 121
1 vote
0 answers
56 views

Generating nodes at joining points

I have road network (lines) and points (Address) . With the help of closestSegmentWithContext function, I join points to nearest lines in QGIS. Is there a way to to generate a nodes at every joining ...
Case Msee's user avatar
  • 855
4 votes
1 answer
167 views

Labeling nodes with letters but removing last letter using QGIS

I want to label nodes of my polygon with upper letters. I got to the point where I am able to label them with the right style. What I still need to do is to dismiss the final letter because it ...
Blabsl's user avatar
  • 393
3 votes
1 answer
192 views

Linking points and line layers

I have a points layer and a polyline layer. The points layer is basically bus stops and the line layer is the road network. The bus stops may or may not fall exactly on the road network layer. I want ...
Ganesh Ambi Ramakrishnan's user avatar
2 votes
1 answer
1k views

Trying to iterate through the nodes of a multipolygon

I've got a multipolygon which I want to iterate through the nodes for. I will be editing the nodes later on, but right now I just want some code which works. My relevant code is just this bit: for ...
user25730's user avatar
  • 894
1 vote
1 answer
115 views

Add nodes automatically to adjacent objects QGIS

I'm currently using QGIS 3.10.2 A Coruna. I'm translating an analogue map into QGIS and there are different classes of objects within the same Layer (streets, buildings, properties, etc...). I ...
rtaani's user avatar
  • 557
2 votes
1 answer
50 views

Node Table requried - Per node identyfication of what edges intersect here. (This are roads from open street map)

Having around 2000 rows with multiline string coordinates I am implementing code to see where they intersect. 0 MULTILINESTRING ((-2.50909 53.07879, -2.50867 ... 1 MULTILINESTRING ((-2....
Dominik M's user avatar
1 vote
0 answers
425 views

How to delete vertex and keep topology

I work with line vector data (road network).The lines (roads) includes several vertexes. I would like to have for each line only nodes - at the end of line, or at the intersection of n lines. How can ...
Jordan's user avatar
  • 49
1 vote
1 answer
1k views

Get junctions from pipeline in QGIS

I have pipeline network by shapefile, I want to get junctions and it must have link with pipes to run Epanet (id's junctions must have in node1 and node2 of pipeline). I know that we can extract point ...
Users A's user avatar
  • 39
4 votes
4 answers
4k views

Generating chainage nodes and labels along line each 10 meters in QGIS

I have a line defined by a start and end node. I’d like to insert a node every 10m spacing and label it with the chainage (distance along the line). I thought I could insert nodes every 10m then ...
tomtomnz's user avatar
  • 615
1 vote
1 answer
349 views

Polygon node order will not correct [duplicate]

I've got a few polygons (they were previously one multipolygon) which seem to insist on having an anticlockwise node order. As such, when running through various operations in SQL, they throw out the ...
user25730's user avatar
  • 894
0 votes
1 answer
182 views

Adding nodes to pipe ends using ArcGIS Desktop?

I have two features, a pipe distribution network, and nodes. I need to have nodes at the end of each pipe. I have already found which pipes have no nodes at their ends. How can I add nodes to the ...
Mamoon Mustafa's user avatar
3 votes
0 answers
106 views

How to select and move below vertex - Vertex Tool (QGIS 3.6)

I have a path (tracks) generated by points, which I snapped before to a grid (so there is some vertex at the way back that are overlayed), that at some point overlay each other. When you select in the ...
christian.gobel's user avatar
3 votes
1 answer
978 views

Deleting vertices from line feature using PyQGIS

I have a line made of 17959 nodes. I want to delete several range of nodes from that line with a Python command. For example I want to delete all nodes between node 5530 to node 5861 and connect node ...
Marcel Campion's user avatar
2 votes
2 answers
2k views

Bulk Snapping Points to Line Vertex in QGIS?

I have around 8000 point features that require snapping to the nearest line vertex. Please see below image for reference. I would like to do this in one go if possible. Is there a tool in QGIS 3 ...
NPT_Rich's user avatar
5 votes
4 answers
4k views

Moving node in QGIS?

I am trying to move a vertex in QGIS 3.2. I can select nodes in QGIS 3.2 (which show up blue), but every time I try to move it with the node tool it just deselects the vertex. How do I move a node ...
user1655130's user avatar
1 vote
1 answer
208 views

Find the NW vertex of a polygon

I am using QGIS 2.18 and I am wondering how to find the NW corner of a polygon and create an attribute of that point number. See the attached image. For example, please node 8 is the NW corner for ...
lowsparked's user avatar
1 vote
0 answers
194 views

How can I merge overlapping nodes of a polygon in QGIS? [duplicate]

My shape is composed of 7 polygons which are supposed to be adjacent (ie sharing sharing same nodes). Would like to join the polygons by their nodes and make sure there is no space in between two ...
Beltous Che's user avatar
5 votes
2 answers
3k views

Vertex editor panel

I want to connect two lines in QGIS 3. In QGIS 2.18.16 I fixed it when I edited coordinate values of vertexes instead of manually (with mouse) moving them across the map because I want to match lines ...
Bogdan's user avatar
  • 173
0 votes
0 answers
242 views

Issue editing nodes on a PostGIS table via QGIS

I launch a PostGIS table via QGIS DB Manager tool [PostgreSQL 9.4.17 - PostGIS 2.1.8 - QGIS 2.18.19]. The table geometry is MultiPolygon. I can toggle both Toggle editing and Node tool buttons. When I ...
wiltomap's user avatar
  • 2,710
3 votes
3 answers
743 views

All nodes are duplicate in polygonize result

I have a strange error with a large complex polygon shapefile (representing a hypothetical historic flood level of a lake) that I cannot resolve. Using QGIS 2.18.14, the polygon was derived as ...
Trevor Hobbs's user avatar
1 vote
0 answers
307 views

QGIS Python Program for extracting all the Polygon nodes - Issue with Geometry MULTIPOLYGON

I have a python program which can extract all the nodes of any polygon to a text file. import ogr, os, sys import xlrd control_file = "W:/04 Tools/07 MapMaker/Control File_Shapefile to Text file.xls"...
Sreeraj's user avatar
  • 729
0 votes
2 answers
342 views

Getting closest node point (within 2km) from current location using pgrouting?

I'm very new to the GIS, and grasping the pgrouting function to see the possibles develop this feature. Basically I wanted to know all the next end points distance within 2KM from the current ...
FR STAR's user avatar
  • 103
1 vote
1 answer
261 views

Vectorizing missing nodes in QGIS?

I am trying to vectorize a raster with tree coverage information. I classified the data in 3 categories and now I am vectorizing the raster to make calculations and intersecting it with other layers. ...
B RG's user avatar
  • 123
1 vote
0 answers
434 views

Move node feature and snap to node of other layer

This seems like I'm missing something obvious - I have a layer with node features that I need to update the position of by referencing another node layer. Should be a simple move and snap-to ...
CEL-ma's user avatar
  • 1,015
9 votes
2 answers
1k views

commuteDistance in gdistance package in R giving error

I am currently trying to run a function that "calculates the expected random-walk commute time between nodes in a graph. It is defined as the effective distance (resistance distance) between the ...
Vijay Ramesh's user avatar
  • 1,342
4 votes
3 answers
3k views

Extract coordinates of lower right corners of polygon

Using QGIS 2.18.14, I would like to know the node number at lower-right corner of each polygon, shown as red circle in a image below. My goal is to obtain xy coordinates, by giving such number n to ...
Kazuhito's user avatar
  • 30.9k
2 votes
0 answers
78 views

Contour Plugin generated contours do not have enough nodes

I am using the contour plugin to generate intermediate contours. I have a vector file with 5 foot contours and want to interpolate 1 foot contours from it. The procedure I used was: Extract nodes ...
John Kossik's user avatar
0 votes
1 answer
158 views

How to extract nodes at regular interval using QGIS? [closed]

How can I extract nodes at a regular interval say 20 m from a path kml file having point located at random interval.
Franciser's user avatar