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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How do I draw smooth vertexes around curves in ArcMap 10+?

I have some polygon layers (parcels) that have vertexes drawn around curves, as if traced. How do I click and drag to draw vertexes in a smooth shape? Big difference between what was originally there, ...
138 views

Finding boundary vertices from given set of coordinates? [duplicate]

How to find the the boundary co-ordinates from a given set of co-ordiantes? I understand that this question asked previously and answered here Finding boundary co-ordinates from given set of point ...
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Order of polygon vertices in general GIS: clockwise or counterclockwise [closed]

Two days ago I asked a question about the internal storing order for the vertices of a polygon in ESRI shapefiles. That question was answered (Are polygons stored clockwise or counterclockwise in a ...
200 views

Breaking connecting between features (Editor tool)

I snapped a series of lines to a point (The ? symbol on the picture). Now, I am trying to unsnap them so I can connect them to their respective line I just created. My question is simple. How do I ...
141 views

How to set a defined distance between nodes to digitize in qgis?

Using QGIS (by now I have the 2.4 version) I would like to set some parameter (I don't know if such exists) that would impose a definite or maximal distance between nodes when digitizing a polyline or ...
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Converting Vertices of Polylines and Polygons to Points and Maintain Attributes

I'm pretty sure someone has done this before, but I'm having no luck. I'm using ArcGIS Standard version 10.2.1 and I want to convert all the vertices of a polyline or polygon to points. Essentially, ...
439 views

Why sometimes Network Analyst can not find the shortest or the best route?

Normally in Network analyst and route detection it has to find the shortest and efficient way.But here in my work I can see that it does not find the best choice.I wonder why it chose the longer path ?...
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How to split multiple polygon layer into multiple layers by vertices parts?

I have a layer in Arcmap 10 that was brought over from Auto CAD (layer A). This layer has multiple polygon shapes. I need to split these shapes from layer A, and place them into their own layers. ...
41 views

Multiple vertices after editing giving wrong start and end x, y co-ordinates [closed]

Initially I generated some polylines across the river at various locations. I found some of them are smaller in size and not fitting the river width, Therefore, I edited those using advanced editing ...
338 views

How can i change vertex option programmatically using python in QGis?

I want to activate the option "Show markers only for selected features" in Setting-> options->vertex markers ,using python. does anyone know if i can do it programmatically ? i attached a photo of the ...
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Splitting lines at vertices in ArcGIS Desktop with Basic level license?

Is there a way to work around splitting lines at vertices in ArcGIS Desktop without an Advanced level license? I don't have the advanced license and I have a model that uses this tool.
967 views

Displaying Vertices and Nodes in ArcGIS Desktop when editing?

A previous employee built a custom tool for users in our organization that displays nodes and vertices when editing. Essentially the purpose is: The Display Topology Nodes button will symbolize the ...
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How to remove vertices or lines within a polygon?

I have transformed a *.dxf-file into a polygon shape-file. In many of the polygons i have lines whicht do not belong there but i can not delete them as i normally delete vertices on polygons by ...
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Insert Vertex into Polyline based on Point layer using arcpy

This is essentially the same question asked here that was not answered... Using ArcGIS 10.1 Advanced I have a point layer with points that represent the intersection of a driveway with a street ...
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Alternative to ST_ClosestPoint, one which returns a vertex of the geometry

ST_ClosestPoint returns the closest point on a geometry, as in the example at http://postgis.net/docs/ST_ClosestPoint.html What I need is to get the closest point which is already a part of the ...
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How to Identify and Delete duplicate vertices?

I am trying to figure out how to delete duplicate vertices. I have successfully determined that there are duplicate vertices using PLTS Data Reviewer, but I am confounded as to how I identify and ...
635 views

How to find and quantify duplicate vertices on a polygon/polyline in ArcGIS 10.0

I need to clean up topological errors in various shapefiles and databases. I did read that the Repair Geometry tool could clean duplicate vertices but how can I know the number of errors before and ...
296 views

Find the vertices of an ROI in XROI using IDL

I need to find the vertices of an ROI shape created in IDL's XROI, so that I can redraw the ROI on multiple images. I know you can find the centroid, area and perimeter with the GEOMETRY command, but ...
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Difference between node and vertex in GIS?

In graph theory the term of node and vertex are equivalent, but sometimes in the GIS world the nodes and vertex are mentioned in the same context. I was wondering what the difference is? Node: can ...
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Extract number of vertices in each polygon in R

Simple question: how to extract the number of vertices in each polygon in R? I've found one way that works, but this is very slow (when x is a SpatialPolygonsDataFrame): y <- fortify(x) n.verts &...
733 views

Evaluate minimum points required to define polygons based on an error threshold

I need to build a model or write an algorithm to do this. here is my cadastral problem: I have plenty of polygons and I need to make a report of coordinations of their vertices. This is pretty easy: ...
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Pivot a polyline at vertex or distance using ArcObjects C#

I hope you can help me with that one. I'm using ArcObjects with C# trying to rotate only one part of a polyline at a vertex or distance along the polyline. The polyline is zAware and has values at ...
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How tool to split polylines into two-part lines at vertices in ArcGIS for Desktop 10.1?

I'm using ArcGIS 10.1 SP1 at and we have a problem. There is a serious topology bug that I've mentioned in another question that is affecting our workflow. At present, Esri has stated the fix will be ...
182 views

When digitizing Lines, vertices are automatically generalized when finished feature

I am creating lines(feature class) and when the feature is finished Arcmap 10 will automatically generalize/smoothens the line. Is there any reason why this is happening? is this a bug of ArcMap 10? ...
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Why is ArcMap editor deleting some added vertices and simplifying polygon?

I am using ArcMap 10.0. I am trying to edit (and add) vertices in a polygon. I start editing, (using "Edit Vertices" tool), and add many vertices in the polygon. Then when I am done, I save the ...
284 views

Problem with Pgrouting 1.5

I have PostGIS 2.0.1 and PgRouting latest version. I'm using osm2pgrouting to import OpenStreetMap data everything goes OK the trouble is that I always get source and target columns without data and ...
252 views

Why does ArcMap edit session show different vertex count on feature than arcpy/ ArcToolbox

I am looking at features in an ArcSDE geodatabase via ArcMap. The feature shows to have four vertices by viewing the vertices in the map and by looking at the sketch properties. However if I run a ...
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Counting number of vertices of polygons and lines in QGIS?

In QGIS, is there a way to count the number of vertices of polygons and lines in a given layer, and create a separate field containing these values? I suspect it's a function somewhere in the field ...
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Snapping Polygon vertices to Point features using ArcGIS?

I have a set of polygons drawn using an inaccurate GPS PDA. these polygons are sharing nodes. After post-processing GPS data to get accurate coordinates i have a set of all the nodes, then i have to ...
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Deleting multiple vertices at once from representations using ArcGIS Desktop?

I have a polygon feature class that I've converted to representations so that I can delete some vertices. I'm doing this to simplify some of the shapes manually, but I'd like to speed this up by ...
598 views

New Snapping while editing vertex's in ArcEngine 10

Is it possible to use the new (not classic) snapping functionality when editing the vertices of a polygon feature in ArcEngine 10. I would like editing vertices to behave exactly the same as editing ...
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Change number of decimal digits for features in ArcGIS 10?

I am editing vertices in polygons and points in ArcMap 10, and realised that they only hold 3 decimal digits for the X, Y coordinates, but I would like at least 6 decimal digits. Even if I type in ...
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Extracting coordinates of polygon vertices in ArcMap?

I've got about a dozen polygons in a feature class loaded in ArcMap 10, all in geographic WGS 1984. How do I easily obtain the coordinates associated with each vertex of each polygon in that feature ...
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Viewing vertices in ArcGIS Desktop?

In ArcGIS, is it possible to change the polyline symbology to show vertices? Or do I need to extract the points via Feature Vertices To Points? This becomes a pain if I want to edit the source polygon/...
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How to select the vertices from a polygon?

I am writing some VBA code to extract vertices from a polygon. I would like to ask, how to select the vertices from a polygon ?