Questions tagged [intersect]

Use for questions about the ArcGIS Intersect tool

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28 views

Translating text values gathered via intersection into a short integer coded domain in ArcGIS Pro [closed]

I have a coded domain of all of the counties in the US. I imported a table to create it and the data type defaulted to short integer. I am going to be running intersects on county layers that just ...
1
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1answer
38 views

Quantifying number of overlapping shapefiles using ArcPy with ArcMap

I am using ArcMap 10.7. I have a multitude of shapefiles representing glacial lakes in different stages of their formation, each shapefile produced using a different climate model as basis. All ...
0
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1answer
54 views

Joining all atrributes of one column in point-layer like number in multiple columns of a polygon-layer like number_1, number_2 etc. in QGIS

I got a point-layer Points where all points lying exactly on the vertexes of the polygons of a polygon-layer Polygons. How do I join all numbers of the point-layer to the polygon-layer? All algorithms ...
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0answers
8 views

Improving output of Intersect tool of two street network datasets using ArcGIS Pro

I ran the Intersect tool on two street network feature classes to identify streets that are shared between them, with the output below. As you can see, the lines are exactly what I'm looking for. ...
0
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1answer
18 views

Unable to intersect polygons in R even though CRS matches?

I am trying to use areal interpolation to distribute the values from a source polygons layer into smaller, differently-shaped polygons from a target layer, and have been unable to do so. I have been ...
3
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1answer
69 views

Area of intercepted geometry

I have a polygon layer and a point layer (which was created by obtaining the centroid of each polygon in the polygon layer). I have tried to use the aggregate expression to automatically fill a field ...
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0answers
13 views

Filtering dataset for intersecting polygons and combining them using R

I am working with large datasets of polygons (multiple thousands), where some might intersect (see example 1). I want to identify which polygons intersect and separate them from the ones that don't ...
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0answers
19 views

Finding average value from polygon areas in fishnet cell based on lat/long of points using ArcGIS Pro

I have created a fishnet of 0.5x0.5degrees and wanted to know the average lat/long in each cell in ArcGIS Pro. How could I accomplish that?
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1answer
35 views

Using Spatial Join for single point joins in ArcGIS Pro

I am trying to join population and job data to service area polygons I created, summing the population and job values to the service area polgyons. I had already previously joined the population and ...
1
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1answer
36 views

Intersecting two rasters in ArcMap

I have two raster layers with different resolutions that I want to join. One has higher resolution (transparent yellow) and the other raster has lower resolution but bigger extent (whole earth) and ...
0
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0answers
31 views

Filtering polygon using Cesium for WMS 1.3.0

I am trying to display only the portions of my data that fall within the polygon. I am using WebMapServiceImageryProvider to get the tiled imagery.   As Cesium just supports WGS84, I tried to use both ...
5
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1answer
116 views

Disjoint is very slow in Virtual Layer but fast on symbology

In QGIS, take a polygon grid (named 'grid') and a multipolygon layer (named 'surfaces'). For each feature in surfaces, I want to union all features of the grid that are disjoint (not intersected) with....
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0answers
33 views

Identifying which polygons lie within grid of polygons using ArcMap [closed]

I work in ArcMap 10.8.1. I have a polygon layer of municipalities and a polygon layer of 1x1 km square zones of air polluted areas (it's not a raster). I need to find which of the municipalities are &...
0
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0answers
30 views

Intersection of points for overlapping polygons

I have the following intersection task: I want to do an intersection of points and polygons. I want to add the variables of the polygons to the intersected points Some of the points fall in more than ...
4
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1answer
52 views

Label neighbouring features in QGIS

In QGIS I'm trying to label the neighbouring features of a certain polygon but not getting much success. All the features are inside the same layer named MG_Municipios_2020. I'm using the Rule-Based ...
2
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1answer
70 views

OpenLayers : intersect between polygon and circle not accurate

When I look for intersect between circle and polygon. He finds intersect between these two, who are not visually intersected. Everything should have the same projection ('EPSG:3857'). But I don't know ...
0
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0answers
20 views

Calculate raster landcover area in multiple overlapping buffers

I have 900 1km buffers (polygons) in one layer and a raster layer for forest area (reclassified into forest 1, non forest 0). I have tried: Tabulate area - but realised this does not work for ...
4
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3answers
119 views

Extracting polygons from layer crossed by lines layer

I'm looking for a way to only select entities crossed by a lines layer from a polygons layer. I've unsuccessfully tried the Intersect function with lines layer overlay. I'm mentioning that I have used ...
0
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0answers
22 views

Intersection of all layers of different feature classes using ArcMap

I have 20 different layers where a few of the layers are lines ( rivers) some are points and a few are polygons. I need to find all the single polygons where all 20 layers intersect as describe: ...
0
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0answers
27 views

How to performing selection by expression using QGIS

I am using QGIS 3.8. I have a grid (hexagon) and a set of points. I am trying to select the hexagons containing at least 1 point. So far nothing complicated. Except that sometimes my points overlap 2 ...
1
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1answer
50 views

Selecting not overlapping polygons using QGIS

I have a shapefile with 1000 points and a layer with 30 000 polygons. Not all of the points overlap with the polygons. For all of these points, which are not overlapping with a polygons, I need to ...
0
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0answers
183 views

Creating python function to merge line segments if they are connected using ArcPy

I have a polyline shapefile consisting of several line segment features. I want to do a merge operation if the line segment features endpoints are connected, and if the features are disconnected do ...
2
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1answer
88 views

Calculating final polygon after subtracting all intersecting polygons using shapely [closed]

I have a list of centroids that I buffer to 5000 meters radius. I need to take each resulting circle and run it against the remaining centroids(also buffered to 5000 m) and find the final shape after ...
4
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2answers
71 views

Selecting only the first row of polygons around polygons

I am currently working on my thesis and after trying for a few days I decided to ask this questions since I guess I'm stuck. I'm working on ArcGIS PRO 2.7.0 with datasets obtained via Esri (online) ...
1
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1answer
92 views

Using TIFF file in Intersect tool of ArcMap

I am attempting to do some geoprocessing with a CSV file and a TIFF file (trying to use the Intersect tool), but am experiencing some trouble with it. I can't seem to be able to input the TIFF file as ...
2
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1answer
44 views

ArcPy Intersect without self-intersection

I'm doing an intersection between buffers around street centerlines and census block group geoms. The extent and density of features is fairly large so I'm running into memory limitations consistent ...
0
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1answer
47 views

Adding column to attribute table indicating polygon each data point is in using ArcGIS Pro

I am working on a project linking ideas in Geology and Ecology. I currently have a map showing the geology of an area (polygon layer), with a points layer on top indicating the locations of data ...
1
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1answer
45 views

Overlap area of features from same feature class

Is there a way to calculate the area of overlap between features (polygons) from the same feature class. See figure below as illustration for example. There are 3 features with an ID and area and I ...
3
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1answer
630 views

What is the algorithm that Shapely used to check if two polygons intersect?

What is the algorithm that Shapely used to check if two polygons intersect? from shapely.geometry import Polygon p1 = Polygon([(0,0), (3,0), (3,1), (1,1), (1,2), (3,2), (3,3), (0,3)]) p2 = Polygon([(4,...
1
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1answer
62 views

PostGIS where clause not working as expected with multipart geometry

I am running an intersect from a subset of one table on itself (this is part of a larger parameterized query but the issue in question arose out of this particular situation) using a CTE (zones in the ...
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0answers
16 views

Spatial Join 3D point datasets: Ecological Marine Units (EMUs)

I have a global set of sampling points (N = 500+) that I would like to attribute with the Ecological Marine Unit (EMU) classifications near which they fall. The EMU dataset and my sampling dataset are ...
1
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1answer
23 views

Making the categories layer style which shows features overlapping another layer in a different color

I have tried with this new QGIS function from expression engine but it is not working. Here is the query I have tried: overlay_touches('Master_3307To3339',filter:= within(geometry(@parent),@map_extent)...
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0answers
46 views

Tabulate Intersect with Overlapping Polygons

I am trying to create a table that summarizes soil information for the given buffer areas of 125m and 500m radii. Both the soil data and buffer data are in vector form. Within each buffer, there can ...
0
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1answer
540 views

Clip function in the sf package in R

I try to clip shape "a" with shape "b". The result should be a polygon with the attributes and borders of "a" but cliped on the extent of "b". Basically a ...
1
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1answer
26 views

Layer from server as input to ArcGIS Pro Intersect

I am working in ArcGIS Pro 2.6.1 and I have managed to pull in data from a server found here: https://spartagis.ncem.org/arcgis/rest/services. The layer in particular is the NC_AllBuildings layer. I ...
5
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2answers
218 views

Intersecting area between two polygons in the same shapefile in QGIS

I have a shapefile with two polygons in it. I would like to be able to generate the intersecting area between the two polygons. Please note, I have tried using the intersect tool, however this does ...
1
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1answer
31 views

Intersect function is generating different outputs in ArcMap and ArcPy

I am currently running the following code in ArcPy: in_dir_temp = "D:\\X\\" x1= in_dir_temp + "x1.shp" x2= in_dir_temp + "x2.shp" y1= in_dir_temp + "y1.shp" ...
2
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2answers
340 views

Checking intersection of two shapefiles using ArcPy

I am new to Python programming. How do I check the intersection of two shapefiles using ArcPy? If the shapefiles intersect, it should return True else False. Below is the code that I have written : ...
1
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2answers
95 views

Check if coordinates intersect rotated rectangle

In a non-GIS system, I have a Python script that checks to see if coordinates are valid: def is_latlong_valid(laty, longx): #Verify if the numbers are legitimate UTM coordinates return (...
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
24 views

Use ArcGIS to classify intersection types

I am using ArcMap 10.4 I have a shapefile of a road network. Each road has a functional class value in the 'FC' field. I'm trying to determine how often roads of each functional class intersects ...
0
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1answer
26 views

Why when I do an intersect analysis on a point feature class to a line feature class I only get 'one' point result?

ArcGIS Pro. I've merged my point feature classes of species and have gone to run an Intersect Analysis on these with a line (river) feature class. However, I only receive one point in the output and I ...
0
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0answers
48 views

Intersecting multiple feature classes with just one feature class?

I have multiple feature classes (fc) and would like to intersect them with one other fc, is this possible without merging/joining the multiple fc's? Using ArcGIS Pro I've attempted to intersect ...
1
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0answers
12 views

Counting number of intersections for N linestrings

I have a database with D entries of polygons representing buildings. Each entry/row has the following information: id, min_height, max_height, geom (min_height is for buildings that have some kind of ...
0
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0answers
23 views

Extracting number and attributes of points in a GRID in ArcGIS

I will be thankful if someone can help in extracting the number of points with attributes using the grids. For example I want to know number of species points in a grid with attributes. I have ArcGIS ...
2
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1answer
64 views

Intersect overlapping entities and their attributes

I have a shapefile containing 6 classes of polygons on QGis 3.14. Some of these polygons overlap each others, but they're not geometry errors or duplicates, just polygons with different attributes. ...
0
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1answer
251 views

How you get values within intersect layers and autofill attributes to another layer form when creating a new object

When im creating a point that intersect on an polygon, how you can get values from attribute polygon and autofill the attribute in the point layer. There will be some code? I´m using qgis 3.12 ...
1
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0answers
25 views

QGIS: Intersect two polygons, one line layer as Output

I have two polygons that intersect, now I want to calculate the length of the outline of the new polygon, but only the outline it shares with one of the input polygons. Is there a way to enter two ...
0
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1answer
99 views

PyQgis Intersect line with polygons. Result is not Correct (some of polygons result not intersec the line)

I have a track (Line) and I want to know wich countrys/cities (Polygon) intersect this track. I try in two ways: a) With PyQgis - I use QgsSpatialIndex().intersects(track.geometry().boundingBox()) ...
0
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0answers
18 views

ArcMap Intersect Tool is missing just one intersect point of two polyline shapefiles?

I'm trying to find the intersect of 2 polyline shapefiles. One shapefile is a long line (of multiparts), the other shapefile is 11 straight lines that "fan out" radially. The ends of the first ...

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