The overlapping-features tag has no wiki summary.
14
votes
1answer
720 views
Trilateration algorithm for n amount of points
I need to find algorithm that can calculate centroid A (aka gravity center, geometric center, center of mass) from the figure where circles T1,T2,T3,T4,T5,..,Tn intersect
AND length of line R from ...
9
votes
0answers
98 views
Iterating a model to create 3 buffers around three points and find their intersection (trilateration) in arcgis 10 [duplicate]
This past summer I recorded the location of a large number of plants I was working with by calculating the distance from each plant to each of 3 tripods for which I have GPS coordinates. I'm trying to ...
7
votes
2answers
680 views
How to create a heat map or density map from stacked polygons in ArcMap 10
I have a polygon shape file that has many overlapping features. Each feature represents an area used by polar bears. So some of the polygons overlap and some don't, and there are separate clusters of ...
7
votes
2answers
568 views
How to display transparent overlapping polygons in ArcGIS?
I'm trying to draw home range maps in ArcGIS 10.1 and am having difficulty displaying them as I would like.
The home ranges are in the form of polygons and many of them overlap. I'm trying to get a ...
6
votes
3answers
139 views
How to Display Overlapping Lines?
I have multiple line layers that represent bus routes and many of the routes overlap (i.e. near terminals, transfer locations, etc.) Is there a function in Qgis which will display both features ...
4
votes
2answers
80 views
How to calculate zones in multipart polygon feature
I was wondering how you can give each zone a value based on how many overlaps there are from a multipart polygon feature. See the picture. If the circles don't overlap I would like the area to have an ...
4
votes
1answer
108 views
How to combine stacked polygons within a shapefile?
The image below shows my shp-file. Every polygon has the same transparent color. So a darker blue means, that several polygons are stacked! How do I cut every polygon with each other so no polygons ...
4
votes
0answers
65 views
What are common ways of representing features that share coordinates?
When I encounter features of the same class, but with identical coordinates I lay them out in a spiral arm formation. I chose to pick the initial radius and angle at random (can't recall my actual ...
3
votes
2answers
130 views
How to efficiently check for feature overlaps with Arcpy?
In an effort to reduce processing time, I am looking for ways to pre-process data within my script. I have ~18,000 featureclasses with ~500 features each (all simple circle polygons) from which I want ...
1
vote
0answers
66 views
Overlapping Polygons in same feature class using Arcobjects
I have a polygon feature classs with millions of records, I need to find list of overlapping or intersecting polygons in the same feature class, and how to do it efficiently?
I need a ESRI ...
1
vote
0answers
64 views
Overlapping polygon outlines dashed at overlapping locations but solid elsewhere
In ArcMap 10.0, if one smaller polygon fits inside of another and shares a portion of the larger polygon's boundary, and they both are set to display thick outlines on the inside, is there a way to ...
0
votes
1answer
25 views
How to find overlapping polygons within a multipolygon (oracle spatial)
I am working with Oracle spatial and have a table with MULTIPOLYGONS.
How can I find the db entries where the polygons of a multipolygon overlap - within the same geometry?
So, a function that checks ...
0
votes
0answers
20 views
Identify polygon overlaps within single shapefile
Using either QGIS (1.9) or ArcInfo (9.3.1) I'm trying to identify unique overlaps of prehistoric building footprints from an archaeological site recorded within a single polygon shapefile. While the ...
0
votes
1answer
38 views
How to select behind feature which is overlapped with the same layer on QGIS 1.8.0
My issue: I received data which was created without "Avoid intersection of new polygon". There a few overlapped feature with the same layer. I could fine overlapped feature by the spatial query. But ...
0
votes
2answers
100 views
Find and list all polygons that overlap with another polygon
I am working with two polygon layers which overlap but are unrelated (one is congressional district boundaries, the other is MPO area boundaries).
I would like to generate a list of all the ...
