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Questions tagged [vertices]

Also known as a "nodes", the points specifically used to describe a polygon or polyline in a "vector" or "linestring" representation.

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GRASS GIS: connecting vertices with lines along following Node Number

My goal: Convert vertices to a poly line describing the general route to have 1 line describing the center line of a river. Limitation: The whole process has to be automated. The raster can ...
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1answer
61 views

Vertex editor dialog

I have a little lack, because when my colleagues use QGIS, sometimes they make a mistake with merge function, but singlepart/multipart isn't solution. A simple example: Somebody accidentally merged ...
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2answers
115 views

Extract vertices QGIS 3

I am using Extract vertices in QGIS 3. The table in result shows angles. What do those angles mean?
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2answers
63 views

Merging polygons that share one vertex (node neighbors) using ArcGIS Desktop?

I have a set of very large shapefiles and would like to merge polygons within these that share one vertex. Currently they are all separate like so: What tool can I use to merge all the polygons ...
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32 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 ...
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2answers
103 views

Editing border shape using QGIS?

I add a shapefile of the district in Paris on another shapefile. I would like to match them. See images below: The black border is the original, the blue one is what I want to get. I tried with the ...
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1answer
40 views

Counting features within other features

I've several files composed of elements like the one below which I'm trying to make sense of (essentially a very simple microtopography study). I've vectorised the image with lots of separate lines ...
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1answer
51 views

Moving point labels on vertices inside of polygon

What I'm trying to do is to label vertices of a polygon with a number and plot that number inside the polygon. So far I extracted the vertices to a 2nd point layer. Named them correctly and plotted ...
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1answer
73 views

Adding vertices to multiple overlapping line segments in QGIS?

I have a polyline dataset of transit routes for my city. Around the transit stations, up to hundreds of routes overlap completely, but do not follow the correct path that the busses actually travel (...
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15 views

Adding vertices to polyline [duplicate]

I have a polyline shapefile with multiple features. I also have a point shapefile containing only points that are on the lines. What I'm trying to do is to add a new vertex to every line where it ...
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1answer
100 views

Manually edit shapefile coordinates (polygon) QGIS 3

In the QGIS2.18 version I was used to see the point editor table when I would be in editing mode and have clicked a point. A list would appear, with all the points in the selected polygon and their x ...
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1answer
97 views

Delete vertices on polygon feature class, based on the intersection with point shp with python

I need to delete some vertices from some polygon fc that are unnecessary for the geometry. I have a point shapefile that contains all unnecessary vertices as points - but how can I access the vertices ...
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1answer
44 views

Error: Primary geometry of feature 'null' has 1100253 vertices, above the limit of 1000000 vertices

I'm pretty new to Earth engine and I'm trying to export several feature collections. However for one of those this error keeps occurring whenever I try to run the Export process: Error: Primary ...
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1answer
123 views

Delete vertices from a line 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 ...
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2answers
288 views

Extract the polygon layer vertices and delete the unwanted ones in QGIS

I need to extract the vertices coordinates of the four corners of each rectangle of a layer made up of 729 polygons (= map sheets). I began using Vector/Geometry Tools/Extract Vertices function to ...
2
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1answer
69 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 ...
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1answer
256 views

how to get first and last point of MultiLineString-objects in qgis3

i would like to identify the start- and endpoints within a set of polylines and return the coordinates of both points finally. so far i have been able to iterate the features and found out that ...
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1answer
44 views

Remove overlaping vertices in lines - QGIS

I am currently working with data that has a huge amount of topological errors. These are lines that are closed, in the place where the beginning of the line meets the end, someone added more than 2 ...
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2answers
29 views

Labeling cells in fishnet using equivalent (“southeast”) vertices in grid using ArcGIS Desktop?

I have a large grid of 0.001-degree fishnet cells. I want to label each cell using the coordinates of its own southeast vertex. I have the coordinates for all the vertices in the entire grid, but I ...
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2answers
342 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 ...
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0answers
93 views

Adding Points to line at certain distance using QGIS?

USING QGIS 2.18 This question seems to have been asked a ton with lots of options.i just need to add some points/nodes/vertex to a line at a recurring distance along that line. There are some ...
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0answers
115 views

Splitting lines/creating vertex at intersection using PyQGIS?

I am looking for an easy way or function to split 2 previously selected line features (generate vertex) at intersecting points (or touching points). See the following picture: I am developing a ...
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2answers
53 views

Find the NW vertex of a rotated 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 ...
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36 views

Move vertex of shapefile together [duplicate]

I have a simple vector file of land use. In QGIS, I would like to change the shape of some features without having to re-edit them. In practice, is there a way to move together the coincident vertices ...
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1answer
31 views

Keep only endpoints of line with Extract Vertices

Using QGIS 3.2, I can use the "Extract Vertices" tool to generate a layer of vertices for each line segment in my data. My data is split into line segments of between 400-500m in length (using the v....
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60 views

How to get closest Vertex value from Selected Feature by point Using qgis python

For example I have a point ( 0 , 0 ) And I have a selectedFeature How can I get value ( x , y ) of closest vertex from selected Feature by Using Python Console in Qgis image for example :
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1answer
129 views

Extracting vertices in line segments using ArcGIS Desktop? [closed]

I have ArcGIS Desktop 10.6 and have many polyline features and want to be able to extract the vertices of each line segment that looks like this: I want to keep the line ID associated and be able to ...
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0answers
19 views

Selecting set of vertices (not complete feature) and pasting into another feature in same or different layer using QGIS?

I want to select a few vertices in QGIS 3.2.2 (for example a bend in a river) and copy that into another feature in the same or in a different layer. The pasted vertices would be added to existing ...
2
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1answer
219 views

In Vertex Tool (QGIS 3.2.2) How can I select the next (or previous) vertex?

I want to correct a duplicate vertex by deleting one. However, if I use click and drag, I select both and delete both. To select only one, I could select the previous (or next) vertex and navigate ...
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1answer
133 views

Select point by number of overlapping features

I have this polygon layer converted to lines, and had the line nodes extracted using Extract nodes. The resulting point layer has several overlapping points because of common borders with adjacent ...
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1answer
82 views

Quick add vertices when creating feature (QGIS 3.2)

I am creating a new feature (polygon) in QGIS 3.2.2 and would like to easily add the vertices as I delineate a boundary. Currently, I can do this one by one as the cursor snaps to the vertex of the ...
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1answer
60 views

Extract the “mid/center-point” of the touching borders/lines of adjacent polygons

I have a layer with several polygons and want to extract the "mid/center-point" of the touching borders/lines of adjacent polygons. Despite trying several methods, I do not know how to achieve what I ...
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1answer
116 views

pyqgis 3 QgsVectorLayer.startEditing() doesn't trigger vertex display

In pyqgis 2 standalone application, the following code will trigger the display of vertex as red cross mark, but in pyqgis 3.0.3 standalone application, it doesn't: layer.startEditing() mapCanvas....
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1answer
269 views

How to automatically adding z dimension in vertex editor from field attributes

I have geo-coordinates x y and z value, when I created an 3D shapefile, how can I automatically make the z value into Vertex Editors' z dimension??
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1answer
632 views

Access vertices of a line in Python

Given a shapely.geometry.linestring: How do you access single vertices using Python?
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2answers
314 views

QGIS remove useless vertex to simplify polygon

I received a shapefile which is the result of a combination of several polygon. I want to clean and simplify it as there are many useless vertex as you can see on the picture. This is only one feature ...
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1answer
42 views

Drawing polygons with holes on map using vertices exported from QGIS?

I have exported from QGIS, for a feature in a layer, all the vertices (lat and lon) of a polygon, into a file. I'm trying now to draw that polygon using that list of vertices (that I re-read from the ...
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1answer
54 views

Marker symbology on vertices ArcGIS [duplicate]

How can you add a custom marker/point on the vertices of a line feature? There are only options to add them to the start/end of the line and equally spaced along the line. However, a marker on the ...
5
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1answer
625 views

Editing vertex in QGIS 3 [closed]

I don`t manage to move a vertex. I read an answer on this question, but even though, I am not able to move it. And I am not able to prolong a line.
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1answer
86 views

How to only delete vertices where the Polyline doesnt bend

I am working on pipes and I only need vertices where the lines bend. A lot of my pipe have vertices in the middle of the polyline even though there isn't a bend. Is there any way to delete them with ...
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1answer
180 views

Cannot Edit Vertices of Polyline Feature

I am using ArcMap 10.3.1. What I have is a single polyline feature for which I am trying to edit the vertices. The only thing check in my TOC is the shapefile I'm trying to edit, so there can't be ...
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1answer
266 views

What are duplicate vertices?

I am trying to upload a set of polygons to an online map interface and I keep coming across the error that there are duplicate vertices. What does this mean? Below are the coordinates for all vertices ...
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2answers
1k 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 ...
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2answers
220 views

QGIS 3.0 Vertex Tool Grayed Out

I have a simple line added as a layer from a KML file. I can select the features and show numerous nodes. It is in edit mode. Normally I would expect to be able to delete a node, split a line, etc. ...
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48 views

Showing vertices outside editing session in ArcMap? [duplicate]

Does anybody know, if it is possible to see features' vertices (or all) when you are not in editing mode?
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1answer
269 views

QGIS constrain move by vertex along an x or y axis

In QGIS, is there a way to constrain a 'move by vertex' along the x or y axis? In the picture below, I would like to constrain the edit movement along the y-axis as shown in the bold red dashed line....
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1answer
99 views

Generating higher vertex count polygons to retain projection

I'm displaying polygonal boundary data from a government source (VicGrid94 projection) on a Mapbox-GL-JS (EPSG 3857) map (first converting it to GeoJSON, EPSG 4326). The client is concerned about the ...
4
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1answer
276 views

Extract x, y, z of all the nodes / vertices of a single polygon shapefile into a text file

I want to save all the x, y, z coordinates of all the nodes (vertices) of a polygon shapefile to a text file using Python programming in QGIS Python Console. import ogr, os, sys fn = r'E:\Sreeraj\...
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1answer
182 views

Adding attributes to each vertex of shapefile using shapely?

I have two polygons in Python: poly1 = shapely.geometry.polygon.Polygon([(3,4), (2,4),(2,2),(3,2)]) poly2 = shapely.geometry.polygon.Polygon([(4,4), (3,4),(3,2),(4,2)]) that look like this: ...
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2answers
52 views

Can polyline shapefile hold geometries with 0 vertices?

I have a polyline shapefile and a few geometries (5 out of 2000+) have no vertices at all. I am a bit surprised and was wondering whether my shapefile is broken (so I have a bug when creating the ...