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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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1answer
15 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 ...
2
votes
1answer
50 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
80 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 ...
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1answer
28 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 8....
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1answer
51 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
40 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
22 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 ...
3
votes
1answer
97 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
47 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 ...
2
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0answers
33 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 ...
1
vote
2answers
48 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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0answers
24 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 ...
1
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1answer
25 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
38 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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0answers
132 views

How to get the x value for the maximum y value in QGIS

Using Python Console in Qgis 2.18 I need to know how we can get the x coordinate of vertex. When that vertex have Maximum of Y coordinate. For example: feats_layer = leyer.selectedFeatures() for f in ...
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1answer
63 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
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
113 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 ...
5
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1answer
93 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 ...
1
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1answer
59 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 ...
1
vote
1answer
50 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 ...
1
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1answer
71 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
130 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??
2
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1answer
357 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
162 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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0answers
35 views

Drawing Order Of Vertices in ArcMap?

I'm using ArcMap 10.2 with Advanced license. Based on polygons vertices, how do I create a point shapefile that has in the attribute table a field containing the order of drawing these points? I ...
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1answer
33 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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0answers
23 views

Seeking format to hold attributes for each point/vertex in Polygon?

I need to have a GEO file (GeoJSON, GML) with one or more polygons which represent(s) a parcel of urban property, which have a sequence of coordinates points (long,lat). The problem is that i need to ...
0
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1answer
30 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
votes
1answer
359 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.
1
vote
1answer
74 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 ...
0
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1answer
87 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 ...
2
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1answer
179 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
665 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 ...
1
vote
2answers
177 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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0answers
208 views

Extracting point at each intersection of polygon grid?

I have a polygon grid of sections from the old PLSS/ GLO maps. I am trying to extract just 1 point at each section corner to go out and sample in the field. I have tried the Feature Vertices to ...
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0answers
33 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?
9
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1answer
218 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....
0
votes
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
votes
1answer
222 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
129 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: ...
2
votes
2answers
48 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 ...
2
votes
1answer
162 views

Reversing order of points in line using ArcGIS Desktop?

How to invert the sequence of the points (vertices) of a line in ArcMap so the first point becomes the last and the last the first?
7
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2answers
268 views

Deleting collinear vertex / vertices using ArcGIS Desktop?

I’m looking for an ArcGIS tool or script that will delete all the collinear vertices in line features. I tried the Simplify Line tool and Generalize in the Advanced Toolbar. The tools sort of work, ...
2
votes
1answer
351 views

Vertices not showing in Edit session (ArcMap 10.5)

No matter what I am editing (buildings, roads, etc.) I can not get the vertices to show when I click "Edit Vertices" inside of an edit session. It works fine on my work laptop (ArcMap 10.3) but they ...
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0answers
24 views

Changing the color of scale and rotation points when editing a feature

When selecting a feature in my application and selecting the edit button the selected features become editable. This means that the points for scaling and rotation of that feature are made visible as ...
4
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2answers
433 views

Count number of vertices in a shapefile using OGR

I'd like to extract the total number of vertices in a shapefile using command-line OGR. This answer suggests a method for intersections, but it isn't clear how to cross-apply it. Many other methods ...
1
vote
1answer
70 views

Creating edge and vertex identifiers for Python AddIn?

I can create multiple points using the add-in that I created. But the problem is, I don't know how to add edge and vertex identifiers to my tool (like in the picture). Here is my code : class ...
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vote
3answers
620 views

Getting coordinates of Polyline in ArcGIS Desktop?

I would like to know how to get the coordinates of one of the vertexes of a polyline in ArcMap 10.3.1.
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0answers
97 views

Transferring Z values into vertices in ArcGIS Desktop? [closed]

I am rookie about vertical issues. I have 2 parallel line feaure classes, one of them has Z values in vertices and I want to transfer these z values to the another line's vertices. It is ok that I can ...