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

Calculate average M value for NaN vertex

I would like to know if QGIS has the option to calculate average M value for NaN or "0" vertex values like "Calculate NaN" available in ArcMap. Please check the attached Arcmap image showing the ...
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1answer
29 views

Adding multiple vertices in QGIS

I created a new polygon feature in QGIS 3.4 using the add polygon feature tool. I accidentally clicked the right mouse button to finish creating the feature. I want to continue being able to add ...
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16 views

Many vertices are created for all line features (Complex Edge) after creating Geometric Network

Many vertices are created for all line features (Complex Edge) once I create the geometric network. Is there is a solution to get rid from these vertices?
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1answer
40 views

Measuring length from one polyline vertex to other polyline

I have two polyline which represent the river bank of a particular section of a river drawn based on Satellite imagery at 1984 and 2019. As you can see in the picture, it is drawn in red line with ...
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31 views

Can't add vertex to polygon in QGIS3

I'm working in QGIS3.8.3 and am trying to use the Vertex Tool to add a vertex to a pre-existing polygon. I expect to be able to do this in an editing session by hovering over the segment in question ...
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20 views

Creating unique points at the start of multipart polylines in ArcGIS Pro

I have polylines from a network analysis representing public transport trips. These are multipart polylines. I need to identify the starting point for each trip. However, using vertices to points to ...
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1answer
52 views

Extract maximum pixel value vertex from a raster for a given grid cell without altering the position of the source location in QGIS

I have a 0.5 X 0.5 metre resolution raster. I would like to extract the maximum value points from the raster for every 2 metre square cell. And the extracted points should be in the centre of the ...
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1answer
154 views

Changing vertex order for polygons in QGIS?

I have this intersection of a polygon, see image below I would like to redraw the lines so they don't cross each other. So, in the end, I would like to have a polygon without self-intersecting parts....
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39 views

Seeking geoprocessing tool for adding vertex at intersection without splitting

I have a polyline shapefile and a polygon shapefile. I need to add vertices to the polylines where they cross polygon boundaries. The polyline length must stay the same, so the Intersect tool doesn't ...
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19 views

PostGIS - find vertices on polygons without partners

My goal is to ensure that a set of boundaries have vertices that are co-incident where they intersect by a tolerance of 5m. So I am looking for orphan vertices that are not on an external boundary. I ...
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1answer
43 views

Extracting polygons coordinates in counter-clockwise direction

I am working with a polygon data set and as per the requirement I need to extract polygon vertices/coordinates in counter-clockwise direction/fashion. Is there any tool or software available for ...
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30 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
107 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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18 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
91 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
163 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
35 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
35 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
84 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
175 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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44 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
177 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 ...
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1answer
43 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
55 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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126 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
273 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
99 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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43 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
230 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
430 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
65 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
113 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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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
759 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
204 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
107 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
256 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
768 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
197 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
854 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
48 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
48 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
841 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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180 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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316 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
85 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
44 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....