Questions tagged [overlapping-features]

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

95 questions with no upvoted or accepted answers
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8
votes
1answer
415 views

Point cluster symbology for different categories without overlapping symbols

I'm trying to visualize crimes based on if the crime happened during day or night time. I've tried using the point displacement tool but I'm not satisfied with the results because the readability for ...
5
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2answers
2k 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 ...
4
votes
1answer
1k views

Counting and rasterizing polygon overlaps in QGIS?

I have a large number of polygons that are overlapping. I'd like to create a heat map and plan on using raster calculation to do this. My plan: to give each polygon a raster value of 1, and adding ...
3
votes
0answers
59 views

Clip completely overlapping polygon(s)

The shapefile that I'm working with (in QGIS) has over more than 250k polygons. But unfortunately a lot of the polygons are overlapping. The focus of my challenge is to delete or clip the polygon ...
3
votes
0answers
37 views

Delineating zones based on number of polygons that are in overlay

I am working in urbanism and I have a number of polygons that represent perimeters where certain "programs of revaluation" have been carried out. However, as can be seen on the map below, over time, ...
2
votes
0answers
38 views

Joining attribute of smaller polygon to attribute of biggest polygon when they are overlapping

I have two shapefile layers which include polygons. Each polygon on the first shapefile overlaps a polygon on the other shapefile. I am trying to join the attribute of smaller polygons to the ...
2
votes
0answers
28 views

QGIS - merge overlapping polygons based on attributes while retaining attributes of one of them

This question seems simple, but I cannot figure it out. The problem is - I have a layer of polygons with animal species habitats. Different species can occupy overlapping or even THE SAME area, but ...
2
votes
0answers
23 views

Calculating percentage overlap in graphical modeller

Can anyone help me calculate the percentage overlap of a polygon with multipoint attributes (I.e fragmented pieces of polygon overlapping) in graphical modeller? I need to calculate the area of my ...
2
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0answers
60 views

Road overlapping - ModelBuilder

I have a road feature class (in illustrations shown in gray color), each object in the attribute table has a "road_width" field with a numeric value, what width the road is. This feature class has ...
2
votes
0answers
152 views

Avoid Overlap option not working in QGIS

I am creating polygons in a FGDB layer inside QGIS. I have topology on with advance options and have checked avoid overlap option for that layer. Still, I am getting overlap some times and some times ...
2
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0answers
43 views

Point Displacement in MapServer

In QGIS symbology controls there is a "Point Displacment" option for offsetting points that are close visual clarity. Is there a similar control for MapServer?
2
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0answers
312 views

Fixing Topology (Gaps and Overlaps) in QGIS

I am digitizing a new polygon shapefile of property boundaries based on orthoimagery using QGIS Zanzibar. I'm acquainted with topology editing in ArcMap using geodatabases. I did so with snapping to ...
2
votes
0answers
78 views

Graduated color display of overlapping polygons in ArcMap

Is there a way to display overlapping polygons in a graduated color symbology based on the level of overlap within the same feature layer? For example, in one area of the map there are two polygons ...
2
votes
0answers
55 views

Select events that represent the most recent work on roads

I have a question on Stack Overflow where I ask about Selecting events that represent the most recent work on roads. So far, I have been provided an answer that seems to work, although it is quite ...
2
votes
0answers
218 views

Is there a “Disperse Markers” option in Mapbox GL-JS?

I have used the "Disperse Markers" tool in ArcGIS before, but I am currently working on a project where I am using Mapbox GL-JS to display point data. Many of my points overlap, and I would like them ...
2
votes
0answers
251 views

Calculating combined area of multiple polygons by counting overlapping area only once in R?

I'm using a shapefile in which polygons represent the geographic distribution of species. I need to calculate the combined range of several species sets, but the overlapping areas should be counted ...
2
votes
0answers
288 views

Joining overlapping polygons in R?

I have two shapefiles with polygons (say S1 and S2). Some of the polygons are overlapping in the two shapefiles but not perfectly. In addition some polygons from S1 are touching polygons from S2. I ...
2
votes
0answers
117 views

Is there a possibility to use the ring-points from displacement renderer in qgis for map-tips?

I've got as "layer 1" a point data-set and as "layer 2" a point-dataset (with the identical geometries of layer 1) with a varying number of photos (=identical points) to every point of layer 1. Is ...
2
votes
0answers
287 views

Overlapping despite topological editing

I am digitizing polygons from an ortophoto. In the snapping options, I enabled 'topological editing' and 'avoid intersection' of the polygon layer. I digitized some not-adjacent areas and then made a ...
2
votes
0answers
126 views

How to intersect layers that do not completely overlap in QGIS?

I have two layers in QGIS that I want to intersect in a specific way. On one side I have a layer of the different biotope types in the city of Berlin. On the other side I have a layer of the ...
2
votes
0answers
101 views

Prevent polygon feature (catchment) overlap for land-use extraction using QGIS?

My aim is to calculate catchments for around 150 points and to extract land-use variables for them. In order to do so I need a vector dataset where no polygons overlap. This, however, seems to be a ...
2
votes
0answers
405 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. ...
2
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0answers
105 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 ...
2
votes
0answers
644 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 ...
2
votes
0answers
612 views

Drawing a road network: offsetting overlapping lines (directed graph)

Say I have a road network defined by a table, indicating, for each arc, its ID, and its head and tail node. In other words, my network is defined as a directed graph. For example, we have two points, ...
1
vote
0answers
29 views

Clipping line with overlaying line in QGIS

I have two layers of line which overlap as seen in the picture. I would like to cut out the first picture with the other as an overlap and then merge them together to get one single layer. Or is there ...
1
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0answers
50 views

Counting every part of polygons inside another polygon feature class in ArcGIS

I have two polygon feature classes. The first one represents lithostratygraphy distribution. The second one is an artificial grid polygon feature class. I want to count the absolute number of patches ...
1
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0answers
23 views

List points from other layer where intersects with line

I want to make an easy script for QGIS calc. I have 2 layers (points, and line). Painting the line crosing by points. At end I want to automaticly fill fild (text attribute) with list of points. I was ...
1
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0answers
119 views

Zonal statistics for multiple rasters with overlapping polygons

I have a shapefile with 300 polygons that correspond to 300 rasters (the rasters have the exact same extent than their corresponding polygons). What I'm trying to do is to run Zonal Statistics on this ...
1
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0answers
41 views

Assigning attribute by location for multiple layers

I am trying to assign values by location of one of my polygon layer. It is overlayed by multiple polygon layers and I want to assign the value of the layer that covers it the most. Is there a tool or ...
1
vote
0answers
17 views

How to calculate the exact area of three 1 km buffers that have been intersected?

I am trying to figure out the exact area of overlap of the 1 km buffers around three survey posts. I have used the Intersect tool to produce three individual intercepts which cover all the overlap of ...
1
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0answers
61 views

Workflow for Data Cleaning and Merging of Multiple Point Vector Layers in QGIS

I have multiple point vector layers in shapefile format. Each shapefile contains information of points (longitude and latitude) and datetime (in dd-MM-yyyy format). The problem is that some layers ...
1
vote
1answer
26 views

Identify optimal subset of polygons based on cumulative overlap with a separate layer?

Take the example below, where there are four shapes overlapped by a grid of points. Suppose that each shape has a "score" attribute linked to it, where score = number of sides of the shape (...
1
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0answers
25 views

How to split polygons in one layer into polygons of a different layer in ArcGIS Pro?

I am using ArcGIS Pro and I have 2 layers that are both polygons. The first layer is called ELC, and the second layer is called SPU. My ELC polygons overlap my SPU polygons, sometimes the ELC layer ...
1
vote
0answers
25 views

Overlapping features within a layer

I have a shapefile in which polygons overlap and I can't have overlaps for the sake of my analysis. I want the overlapping area saved, but if the overlapping area is saved to the polygon with the ...
1
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0answers
21 views

Overlap analysis not running

I'm trying to run QGIS's overlap analysis. I ran this a few days ago, but it's not working anymore. I have yellow as zipcodes (overlap_zipcodes) and purple as census tracts (84_censustracts). I'm ...
1
vote
1answer
55 views

How to overlap two layers of points with different size

I am new in QGIS. Here is my problem : I have two layers of points. In these two layers, my points have different degrees or size : For the layer 1, the point "a" has a size of 3, and the point "b"...
1
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0answers
13 views

Selecting one of multiple overlapping features (in same feature class) based on attributes

I have a feature class containing thousands of overlapping buffer features representing service coverage. Each buffer has an attribute of service quality (numeric, high is good). I want to determine ...
1
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0answers
45 views

True Curves change to densified lines upon Topology validation. Fixing 500,000+ slivers in parcel layer

We are experiencing an issue as detailed by this technical article: Bug: Curve features are converted to densified line segments from an arc in a SQL Server geodatabase after compression. We are ...
1
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0answers
58 views

Offsetting Overlapping Symbols in ArcMap

I am working on a recreational atlas in ArcMap 10.5 that highlights points along the coast including marinas, mooring spots, kayaking and diving points etc. The problem I am facing is that I have so ...
1
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0answers
37 views

Overlap of two images is switched

I try to find a way to create DEM model for two overlapping images from different sources. The upper image has transparency of 50% and as you can see they don't quite overlap correctly. The ...
1
vote
1answer
110 views

Multiple buffer ring area analysis using ArcGIS Pro

I have some sites what I've created multi ring buffers for in one shape file, each ring is 50m from the center up to 1000m. The file is one shapefile with many polygons and each ring is the full size (...
1
vote
0answers
88 views

Identify intersections and assign them to one of the features in a single layer

I have a single SHP-layer (12,810 features) and want first of all to identify intersections (incl. duplicates --> features with identical geometries). In the next step I want to delete/clip these ...
1
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0answers
29 views

Accounting for intersecting features with spatial join?

I am looking to analyse the effects of the designation Marine Conservation Zones (MCZs) on fishing effort. I have a shapefile for fishing effort which is gridded, each pixel has information about ...
1
vote
0answers
24 views

Calculating areas and joining attributes between overlapping features

I am working with QGIS 3.4.8 and Python 3.6.8 on OSX El Capitan 10.11.6. I have two shapefilea, one which is a grid of cells (each cell a feature) and the other one which is urban settlements as ...
1
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0answers
47 views

Selecting only coinciding points

I have a lot of points in the same layer. Many of these are coinciding. I only want the points that coincide slected or the points that don't coincide (then I can just reverse the selection). This is ...
1
vote
1answer
348 views

Labels overlapping annotations in ArcMap 10.6

I came across this issue regarding labels overlapping annotations in ArcMap 10.6 (picture left) where they don't overlap in 10.5 (picture right)... What am I missing? I simply opened the mxd in the ...
1
vote
0answers
37 views

Topology checks and error marker

I have a problem in QGIS. I want to find overlapping polygons but not only which polygon overlap with another but the exact node(vertex) that intersect or overlap. The error marker doesn't show you ...
1
vote
0answers
283 views

Layer disappears after adding overlapping layer to OpenLayers?

I created an OpenLayers map which links to my GeoServer WFS service. I tried to do the similar process as this example. However, when I moved my mouse onto the point, the original layer disappeared ...
1
vote
0answers
186 views

ESRI Polygon cutouts (neg. space) become multiple layers in PostGIS

I have a single MULTIPOLYGON from ESRI ArcGIS with 10,000+ sub-polygons in a Shapefile, some having > 1.4 million vertices. I'm importing the data into PostGIS (ogr2ogr or shp2pgsql, same results) so ...