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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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18 views

Why does Modify Vertices seem to fail for no reason in ArcGIS Pro?

I could be working on a project for a while, between two maps and having no trouble modifying features. Then suddenly I will try to adjust the vertices on a line, and I get an error message: modify ...
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1answer
41 views

Seeking ArcGIS Pro tool to get min and max latitude and longitude coordinates?

I am very new to ArcGIS Pro and have been struggling with getting the minimum and maximum latitude/longitude of an area in ArcGIS Pro. I am looking to get four coordinates of a rectangle that ...
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13 views

QGIS. Polygon vertices automatic bind to WFS point features

I have a layer with polygons in QGIS. I have a layer in the same project with points from a WFS. Is it possible to bind vertices from a polygon to points from the WFS layer. So if the admin of the ...
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2answers
78 views

Label polyline with vertex numbers

In QGIS 3.4.8 I can label vertices with their vertex number by using the following expression for a Font marker symbol: @geometry_point_num But, the expression only seems to count the vertices ...
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3answers
151 views

Updating multiple vector points at once with vertex editor in QGIS?

I have a series of points in .shp format arranged in lines over an area, which I've used the 'regular points' tool to generate. In some of the lines, I want to decrease the spacing of the points so ...
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1answer
29 views

Adding vertex where point intersect in ArcGIS Desktop?

How do I add a vertex to a line or polygon where a point feature intersects it? I am using ArcGIS Desktop.
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26 views

Making rhomboid with user defined angle in ArcMap?

I need to capture some buildings in ArcMap 10.3. It works fine for perfectly rectangle buildings, but whenever some location has buildings with an angle like a rhomboid then it became very time ...
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1answer
32 views

Extending polylines with points from Excel/Access file

I have a .shp-file filled with polylines, where some of them are currently being drawn as a straight line from A-B, where in reality they curve a lot along the way. In the shapefile, I have an "ID" ...
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3answers
58 views

Concatenating list of strings using ArcPy?

My code from Returning strings showing all vertices from all polygons in shapefile using ArcPy? creates is the following: import arcpy fc=r'D:\GIS Data\TOOLS\EV calc in Python\Data.gdb\PolyWGS842' ...
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1answer
173 views

Returning strings showing all vertices from all polygons in shapefile using ArcPy?

I want to have a string showing all vertices from all polygons in a shapefile. In my example below my code lists all vertices and the first column shows the polygon they are part of (I only have 2 in ...
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33 views

How do I add vertices on a segment in QGIS 3.9.? Double-clicking doesn't work

I tried adding vertices to segments of a polygon by double-clicking on the segment, but instead of adding a node, the nearest node was moved to the double-click. Clicking on the cross doesn't work ...
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2answers
168 views

Editing start vertex of multiple elements synchronously using QGIS?

I have 20 or so sight line elements (2-vertex lines) which have their start vertex at a single point - a point element in another layer. If I move that start point, how can I move all 20 concurrent ...
3
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1answer
40 views

Extra vertices being added to polyline during ArcMap editing of shapefile?

I have a layer of multiple polylines each of which had some vertices. While editing vertices in ArcMap 10.5.1, all lines have become features with too many vertices. Does anyone know what is the ...
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1answer
47 views

Getting the coordinates for tripoints where three counties intersect

I'm trying to make a simplified triangulation of a US state (say Ohio) based on the counties. The way I accomplish this is to treat all boundaries, no matter how crooked, as straight lines whose ...
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111 views

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
64 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
162 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
80 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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0answers
41 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
176 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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2answers
306 views

Adding new vertex using QGIS Vertex editor

I'm having trouble adding new vertex using the QGIS3 Vertex Editor - I'm using QGIS version 3.4.1-Madeira. I tried following the instructions provided in answer to Using QGIS vertex editor?. The ...
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1answer
41 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
59 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
82 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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0answers
16 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
464 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
149 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
94 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
192 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
618 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
159 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
593 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
47 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
40 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
664 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
155 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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234 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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3answers
73 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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1answer
39 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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0answers
95 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
214 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 ...
2
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0answers
20 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
267 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
191 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
108 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
73 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
147 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
382 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
898 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
409 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 ...