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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16
votes
8answers
34k views

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 ...
11
votes
6answers
7k views

How to find the boundary co-ordinates from a given set of co-ordinates

Given a set of coordinates, How do we find the boundary coordinates. <== Figure 1 Given the coordinates in the above set, How can I get the coordinates on the red boundary. Boundary is the polygon ...
22
votes
4answers
6k views

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 ...
6
votes
4answers
6k views

View vertices in ArcGIS

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/...
0
votes
1answer
68 views

How to iterate through each vertex in a line?

I am working with ArcObjects in building functionality for a toolbar inside of ArcMap. Once I start an edit session, I use the tools to manually draw a line. I am trying to loop through this line get (...
8
votes
3answers
3k views

Order of polygon vertices in general GIS: clockwise or counterclockwise

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 ...
4
votes
5answers
2k views

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 ...
4
votes
2answers
211 views

How to display vertex markers in QGIS for non-editable layers?

I've a PostGIS layer with read-only privileges. Is there any way to display the vertex markers of the layer?
3
votes
2answers
229 views

Deleting line vertices inside polygon using ArcPy?

Is there a way to automatically delete vertices in line features using a polygon file in ArcGIS so that it wouldn't cut up the line but just straightens the line inside the polygon? The lines are ...
3
votes
4answers
3k views

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 ...
2
votes
2answers
81 views

Modifying vertices x,y values to remove all value from 3rd decimal in ArcMap?

I want to check whether there is a way to update the vertices x, y value and remove all values from the 3rd decimal. I only want 2 decimals (no matter the 3rd decimal is 0 or 9, just remove it). The ...
2
votes
1answer
389 views

Polyline ZM: automatic vertex height errors correction

Paolo I've got many rivers (polylines ZM) with a lot of height errors in Polylines 'vertices. Vertices' Z errors are not all equal in height (i.e. they are not all at zero height). I must create a TIN ...
1
vote
0answers
48 views

Insert vertices coordinates in polygon [duplicate]

I have a polygon layer. I extracted the coordinates of vertices, and now I need to add these coordinates in each polygon. The final shapefile should have an attribute table as follows: where X1, X2,...
1
vote
1answer
249 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 ?...
1
vote
2answers
2k views

Removing unnecessary vertices?

I have over sampled polygons that I need to simplify, without changing the shape. basically, I want to reduce the number of vertices, by eliminating the ones that are useless and have the polygons ...