Features that share some or all of their spatial location with other features.

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0
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1answer
43 views

Assign overlapping polygons based on attribute

I am using ArcGIS 10.1 and have a polygon shapefile with 16000 records. There are many polygons that are overlapping and my goal is to determine the overlap portions fix the problem, so that there ...
2
votes
1answer
72 views

Trouble using ST_Difference to remove overlapping features

I am trying to use ST_Difference to create a set of polygons (processing.trimmedparcelsnew) that do not contain any of the area covered by another set of polygons (test.single_geometry_1) using ...
1
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1answer
33 views

In PostGIS: How to delete completely overlapping polygons?

I would like to eliminate overlapping polygons from a table that is often updated with new polygons, but only if a certain attribute has a higher value. If this higher-priority polygon only partly ...
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2answers
53 views

Displaying Buffer overlap in ArcGIS Pro with Intersect

I have created some buffers around some points in ArcGIS Pro, and I am wanting to recognize the area of the buffers that overlap with another buffer within the same layer with a different color. How ...
1
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2answers
64 views

Add overlapping polygons

I have a feature class that contain many overlapping polygons. Each polygon has a field value which I would like to add together wherever the polygons overlap. There are about 100 polygons each with ...
0
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1answer
24 views

editor clip with multiple selected features

I have a layer where the creator drew overlapping polygons instead of clipping or cutting them out, (30,000) polys and 10,000 overlapping after topology was run. I do not want to manually fix one at a ...
1
vote
1answer
50 views

How to merge two lines of polygons?

In QGIS 2.6.1, I have merged two polygon shapefiles. After the merge I am facing a problem at boundaries. So I thought of changing Polygon -> lines, manually deleting one of the lines at the ...
1
vote
1answer
84 views

How to select polygon features that intersect a line feature using pyqgis?

Is there an easy way to select all features in a polygon layer that intersect (overlap) a line feature? I need to implement this in python using QGIS, thus pyqgis. This code illustrates what I am ...
4
votes
2answers
175 views

Fastest way to numerate intersecting polygons in ArcGIS

I need to numerate a thousands of polygons in groups, so each group will get unique number. Every intersecting polygons is unique group (see picture). So polygons have field "groups" with values: ...
0
votes
4answers
85 views

How to Remove Multiple Labels for Stacked Points? ArcGIS 10.2.2?

I have a point feature class, in certain areas there are stacked points. These stacked points are accurate. However, when I label the points I am getting a label for each point, which is okay for each ...
0
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0answers
79 views

Checking for overlaps using python

Trying to write a code where python checks for overlapping polygons within a file geodatabase in the current mxd and basically prints the feature class names overlapping. Here is what i have: import ...
2
votes
2answers
52 views

How to link polygon features in one layer to polygon features in another, using largest overlap in QGIS or GRASS [duplicate]

I have two polygon layers: the first one contains small land lots (green in the image), the second one contains large zones (the purple line in the image attached separates 2 such zones). I want to ...
0
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1answer
51 views

How to eliminate polygon overlap areas in QGIS?

Is there a way to remove polygon overlaps within the same layer using QGIS, preferably removing the overlap area of the biggest polygon (having the greatest surface)? All of my polygons are in the ...
2
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0answers
61 views

Digitizing complex archaeological scenarios in various levels

I don't know if this issue has already been answered, but I can't get my head around it. I used to do this in Illustrator, and there it was simply a matter of clicking "bring forward/bring back" etc. ...
1
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1answer
56 views

Clipping with multiple overlapping polygons while maintaining unique IDs and overlap

I’ve got a series of square overlapping polygons. I want to clip a layer based on these polygons and maintain the unique ID and overlap of the polys. As it is now, if I do a clip using overlapping ...
0
votes
2answers
48 views

How can I find internal overlaps in my polygon feature class ideally via modelbuilder tools?

I have a polygon layer containing "depth curves" for the making of a skin of earth kind of map. I want to check whether or not my feature class contain any overlaps internally between these polygons. ...
1
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2answers
31 views

Selecting/Exporting points from one layer that do not overlap with the points from another layer in Qgis

I am working with QGIS and have the following problem to solve: I have 2 point layers. Layer 1 has more points than Layer 2 but all points of Layer 2 have the same position as Layer 1. I need to find ...
0
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0answers
83 views

Merging rasters which overlap using ArcGIS for Desktop?

I need to merge two rasters which overlap, both indicate distance values. I need the output of the merge to result in the shorter/lower distance value. I am using ArcGIS 10.1. I hope it is more ...
2
votes
1answer
59 views

How to represent different colors based on a field with representation rule (ArcMap)?

I've got a single polygon feature class with hierarchy overlapping polygons (one-to-many - "tree"). The hierarchy is varying between 1-4 levels but can edited to be even more leveled in the future. ...
3
votes
1answer
47 views

Extending buffer zone

I am working in ArcMap 10.2 (and Modelbuilder) and I would like to solve the following problem: I have Buffer A (single part) and Buffer B (multipart). I would like to extend Buffer A with Buffer B ...
3
votes
1answer
117 views

Representing overlapping polylines in QGIS

I have several shapefiles representing bus lines with different colors for each segment, however, because the lines are exactly superposed, only the shapefile on top can be seen. Is there a way to ...
0
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0answers
56 views

Extract unique overlapping/coincident polyline routes into their own selectable layers?

I am currently working with a road network that was created in Citilabs' Viper, consisting of nodes and links. For every single link in the dataset, there is an AB node for both directions, opposing ...
1
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1answer
114 views

How to merge multiple overlapping lines using python?

I have a shape file with different line features, some of which overlap. Is there a way to easily merge all overlapping lines into one, new feature using python? I've seen some solutions for ...
0
votes
1answer
35 views

multiple electrical cable representation in Geodatabase

I have multiple electrical cable going through the same path. Should I draw them all as one single line (with an attribute denoting how many they are)? or multiple lines? if multiple, should I draw ...
0
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0answers
69 views

How to test for overlap between raster and polygon in arcpy?

I have a shapefile with many polygons and many raster datasets (tif). Now, for each polygon I want to extract its area from the each raster datasets overlapping the polygon and save it to a new file ...
1
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0answers
53 views

Problem between files with same coordinate reference system

I have 2 shape-files. The first created with Qgis and the other with R studio(driver=ESRI). When I import them in qgis i see they doesn't "fit". Both have EPSG:4326 - WGS 84. The only difference I ...
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0answers
19 views

Creating density layer after calculating one value based on two variables?

I have a map of census blocks and the population of each block for an island. I also have a map of the tax map key (TMK), broken down into land parcels, with the dollar value of each land parcels. I ...
0
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0answers
21 views

Count Overlapping Lines using ArcGIS Desktop? [duplicate]

I'm trying to calculate the frequency of overlapping lines. The question is pretty identical to the illustration show here Frequency of partially or fully overlapping lines However I have no python ...
1
vote
1answer
59 views

Sdo_Geom.Sdo_Intersection is not considering overlapping vertices

I'm using below package to get the number of intersecting vertices Sdo_Util.Getnumvertices(Sdo_Geom.Sdo_Intersection(B.Geom,R.Geom,.00000000005)) It is returning only 1 when there are actually 15 ...
2
votes
1answer
305 views

postgis: cluster/group points based on distance

We have a set of thousands of points and want to group all of those which are within 100m distance from each other (to get the centroid from each group). A first idea was to build 100m buffers around ...
1
vote
1answer
173 views

Overlapping polygons in the same layer

I am working in QGIS on a vector layer where areas are classified using an attribute "typo". The problem I'm encountering is that many polygons are duplicated or overlapping, with the result that some ...
3
votes
1answer
208 views

How to clip a single layer of overlapping polygons in QGIS

I have a single layer of polygons. Some of the polygons overlap. I wish to make a new layer of just the parts of the polygons that overlap. What is the best way to do this in QGIS seeing it's ...
1
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2answers
118 views

Adding Nodes to Linestrings at Overlapping Points with Polygon Layer in Spatialite

I have two Spatialite tables. A table called 'lines' which contains a PK column called OGC_FID and a LINESTRING column called GEOM. A table called polys which contains a PK column called OGC_FID and ...
2
votes
1answer
79 views

Count Number of Times 100 Feature Classes Overlap

This must have been asked before, but I can't find the exact answer and my attempts so far have not worked. Most of the overlap questions I see are for calculating the area of overlap for portions of ...
2
votes
0answers
66 views

ArcGIS Server Map Service - Best Way To Visualize Coincident (Identical) Point Features

I have an ESRI Map Service serving out several point layers with 10k+ point features. Because of these high feature counts, I use a dynamic map service where a symbolized image is generated on the ...
1
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2answers
88 views

Symbolising multiple lines in the same location

I would like to produce maps showing multiple lines that are in the same location. This poses the problem that the lines overlap each other making one of multiple lines visible when displayed in a ...
1
vote
2answers
50 views

Fire frequency Map

I would like to create a fire frequency map in ArcGIS showing the areas which have burnt 1, 2, 3 times etc (overlapping areas). Currently I have years from 2000 to 2014 of burnt area MODIS data which ...
1
vote
3answers
130 views

Why dissolve creates many extra features?

I have a shp file in Arcmap 10 that has ~16600 polygons. Some overlap. I want any polygons that are overlapping to be dissolved into single polygons. I want non-overlapping polygons to remain the ...
2
votes
2answers
109 views

finding the outermost border of a set of geomertries (circles)

I have a (large) set of geometries (circles) that overlap.! I would like to find the nearest location outside of this group from my current location. In this example my location is the black dot. In ...
2
votes
3answers
129 views

How to highlight the number of overlayed lines in ArcMap?

Using ArcMap 10.2, I have a feature class composed of several lines representing bus routes for the same transit line. There are different routes according to schedules. In the image below, each route ...
0
votes
1answer
131 views

CartoDB - Multipolygon not showing intersections

I'm having an issue with Multipolygons on CartoDB. I have a very simple scenario: A multi polygon row on a table that needs to be displayed on the map. Fact is that when more than two polygons ...
3
votes
0answers
26 views

Labelling Max coverage by Area

I'm struggling to find a quick way to identify and label an area by the maximum coverage of an overlapping polygon. Has anyone done a process like this lately? I'm currently playing with the Pivot ...
1
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0answers
96 views

Check for overlapping vertices without topology, spatial analyst, or 3D analyst in ArcGIS

I need to check for overlapping vertices in breakline and stream polylines but I do not have any extensions in ArcGIS 10.2. Does anyone have a work around? I have ET GeoWizards or can create a tool if ...
2
votes
2answers
74 views

a map for the number of overlapping polygons

I have a geodatabase with a given number of polygon features. I would like to generate a layer (V) that displays the number of overlapping polygons at any given (x,y) location spanned by my polygons. ...
2
votes
1answer
202 views

Calculating area of polygon inside region?

I am new to geographic information systems and i need to calculate the area of a a polygon ( a circle to be precise) that falls inside the boundaries of a region, say a state or a country. For ...
1
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0answers
19 views

Combine group of maps to add/edit features in .NET

Use Case: I have 100s of square/rectangle shaped maps which I want to edit/add features like Dam, Ponds etc. either one map at a time (or 8 maps on each side & corner, if possible). The task is to ...
2
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0answers
90 views

Overlapping Polygons

I have a project that requires us to plot floods in a certain area, the example below shows the flood areas. What I would like to know is how would I be able to shows these polygons in a better ...
1
vote
1answer
719 views

QGIS - Identify overlapping polygons in single layer

I have a shapefile of buffered points in QGIS. I need to display all buffer polygons in this layer which overlap. I have experimented with the intersect tool, but this only seems to work if I am ...
6
votes
4answers
735 views

How to count overlapping polygons from one Shapefile?

I have a shapefile with 16400 polygons. Each polygon shows the expansion of a bird species for the whole world. Now I have to count the overlapping polygons. I tried it with union and dissolve ...
1
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0answers
45 views

Checking Annotation overlap with other features using ArcObjects?

I want to check annotation features overlap with any other feature and also have to give other overlapped feature list....please tell any method for this? Now i am using buffer around selected ...