Geographic Information Systems

Questions tagged [overlapping-features]

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

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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 ...
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12 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 ...
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27 views

Intersection - shapefile with 1000's of overlapping polygons

I am using ArcGIS Pro. I have two shapefiles, one being a single USA county outline (1 polygon) and another with 1000s of polygons representing wildfire shapes for an entire USA state. When I run an ...
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2answers
104 views

Removing overlapping polygons in QGIS

How do I remove overlapping polygons in QGIS 3? I've tried v.clean (bpol, rmdupl and rmarea using right tolerances) and when I check the topology after doing that it says there is no overlapping but ...
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1answer
33 views

Identify polygons within other polygons

I have two polygon layers, where one is river catchments and the other is subcatchments. I want to identify which catchment each subcatchment belongs to. So I would like either a list where each ...
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0answers
20 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 ...
4
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1answer
88 views

Assigning new values to polygon based on overlapping area with other polygons

I have two square polygons df1 and df2. Both polygons are assigned a value of 10 (df1) and 20 (df2) in the "content" column. Let's assume, I have a circle with the midpoint 1.5,1.5 and a radius of 1. ...
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27 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 ...
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29 views

How to dissolve a subset of a multipolygon vector in QGIS? [duplicate]

I have a multipolygon layer. Some of the polygons within the layer overlap. I would like to dissolve only the polygons which overlap and not any discrete polygons. Is this possible? I am currently ...
2
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1answer
48 views

Measuring percentage overlap between home ranges and another shape file in R

I have tracking data from multiple animals and I have created kernel density estimates of their home ranges. I want to find out the proportion of each home range area that falls within protected areas....
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2answers
104 views

Overlapping LAS tiles

I have a las catalog with overlapping tiles. LidR warns me of this, and I'm wondering how concerned I should be. The tiles are in las version 1.2 with point record format 1. None of the points are ...
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0answers
37 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 ...
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46 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 ...
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36 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, ...
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19 views

Counting points in overlapping polygons in ArcGIS Desktop

I have buffers (polygons) that are overlapped. On the other hand, i have some points, and many of them located within the polygons that is overlapped. Means, many points is placed in more than two ...
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2answers
86 views

Removing overlapping parts of polygon

I have many polygons with overlaps. I want to remove the part of overlapping that is between polygons. I tried Symmetrical difference, it gives me only the area overlapping and not two polygons. ...
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0answers
35 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 ...
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4answers
300 views

Finding truly intersected polygons

Intro Short version: My goal is to find geometries intersected by a target polygon. To find overlaps - the most straightforward choice is to use ST_Overlaps or ST_Intersects. But this method will ...
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3answers
396 views

Styling overlapping polygons of different layers

I have 3 layers that sometimes have overlapping features. I need to use a thin outline style to interpret the area within the polygon and want to be able to see on the map when the features overlap. ...
2
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0answers
53 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 ...
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28 views

Simplifying complex/overlapping polygon using GDAL/OGR

Is there a GDAL/ogr implementation of this paper? http://www.cis.southalabama.edu/~hain/general/Theses/Subramaniam_thesis.pdf It outlines a really nice way to clean up potentially overlapping ...
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2answers
30 views

Ignoring overlapping polygons within same feature class when using Intersect tool of ArcGIS Desktop

I am attempting to intersect two feature classes, one of which has many overlapping polygons. I don't want to calculate the intersection of overlapping features within the same FC, but instead only ...
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1answer
81 views

List of overlapping WMS layers [closed]

How do I get a list of layers by clicking on overlapping WMS layers in the Leaflet map? The best solution is to have the list in a single popup on the map. <!DOCTYPE html> <html> <...
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0answers
50 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 ...
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1answer
45 views

Using Geos C++ Library to return overlap and intersects [closed]

I'm running GEOS C++ Library v 3.6 on Fedora. I have a list of geometries I loaded from a shapefile and converted to geos polygons. The shapefile is large and I may be overlaying several ones to ...
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1answer
143 views

Overlapping two line problem

I want to check if 2 linestrings intersects (or overlaps) or no. I use turf.js overlap. Here are the results I want to get: CodePen 1- If only first or last points of line 1 intersects with first ...
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1answer
129 views

Using Layer Actions on overlapping polygons with PyQGIS

I have a file with many overlapping polygons that outlines different datasets. In the attribute table I have an absolute Windows path to mapinfo tab files. I would like to define an action on the ...
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0answers
34 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?
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1answer
45 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 (...
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34 views

Representation of overlapping points by multipoint in ArcGIS Desktop

I have a point shape file with a large number of records of simulations. The attribute table consists of a number of fields about different details of simulations including X & Y coordinates of ...
2
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0answers
113 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 ...
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1answer
40 views

Checking feature overlap using ArcPy cursors

I have a set of geometries that I want to check whether they touch another geometry. I have created a tuple "tiffs" where I want position 0 when touches is true. tif[0] and tif1 are strings. The ...
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1answer
58 views

How to create vector polygons that show areas of overlap (2, 3, 4 times, etc.)? [closed]

I have polygon shapefile containing several thousand features. The attribute table contains, among other fields, year (1943-2019). https://imgur.com/a/C2JTIjX These polygons (wildfires) often ...
2
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1answer
39 views

How can I count the number of countries my GPS data fall into?

I'm working with GPS data in R from different studies and would like to list the countries that each study covers. I can easily map the data using leaflet but I'm not sure how to extract the countries....
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2answers
52 views

Creating new features from common part of other features in same layer using QGIS

I have many overlapping features in one layer and I want to get common parts of it (like in intersection function, when using two different layers). Moreover I want to sum one of features' attributes ...
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1answer
304 views

Overlap Analysis in QGIS

With QGIS 3.8 a new Tool has been introduced: Overlap Analysis. It says that it "calculates the area and percentage cover by which features from an input layer are overlapped by features from a ...
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0answers
27 views

Zonal Statistics for Overlapping Zones Consistent failure

I am trying to run Zonal Statistics for Overlapping Zones on some Buffer feature classes that overlap. I downloaded and ran the script and it succeeded in calculating the zonal statistics for my first ...
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0answers
61 views

Make biodiversity heatmap in QGIS out of polygons and not points

I would like to make a biodiversity heatmap in QGIS out of polygons and not points. I have a shape file made up of many overlapping polygons. I know how to make a heatmap with a set of points by using ...
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1answer
48 views

Overlapping symbol in print layout in QGIS

I am working on water network map in QGIS. I've a layer with different types closely spaced of symbols. For exporting the map, when i zoom out the map some symbols overlapped with each other & ...
2
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0answers
57 views

Display lines which share segments by offsetting them only where they overlap?

Background: As part of a route selection process I have multiple route options which often share segments. I need to keep the underlying data correct while displaying all routes in a way that they ...
2
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1answer
70 views

Clip overlap from polygons

I am trying to script the clipping of overlapping areas from a set of polygons. After having fetched features (outerFeature) a loop (innerFeature) is to check if other features intersect with area > 0....
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1answer
40 views

Getting non overlapping bbox in OpenLayers?

I have tree bbox as follow: bbox 1, bbox 2, and bbox 3. Now I want to get Final bbox from bbox 1 in OpenLayers 5. How?
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2answers
45 views

Check if two different class points fall within the same cell of a grid?

I am very new to R and GIS and statistics. I'm trying to find out if two set of points of different class (ie. species) that I have are aggregated or seggregated. For that I need to randomize the ...
2
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1answer
58 views

Features color based on layer's color in QGIS

Is there a way to synchronize the selection color with a layer's color in QGIS?. Following this post https://gis.stackexchange.com/questions/111784/displaying-only-selected-features-on-map-in-qgis#= ...
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1answer
30 views

Changing order of appearance for feature class with multiple overlapping polygons in ArcGIS Pro?

I am using ArcGIS Pro. I have a feature class with many overlapping polygons. I am changing the transparency of each of the symbols individually so that you can see through each polygon to the ...
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0answers
56 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 ...
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1answer
229 views

Finding overlapping areas between two or more GeoTIFF files

How can one programmatically understand overlapping areas between two or more GeoTIFF files captured at various timestamps for the same location?
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1answer
53 views

Subtract lines from lines in QGIS

I have two shape files with lines: one has 41k+ lines and the other has 606 lines. Lines from these layers often overlap. I want to use the second one as a mask to clip lines from the first one so I ...
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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 ...
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1answer
304 views

Finding overlapping polygons in two shapefiles and deleting them in R? [closed]

I have two shapefiles with more than 1000 polygons each, and they represent two types of agricultural fields in the same area, which means they should be different types. Some of the polygons are ...

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