Questions tagged [intersect]
Use for questions about the ArcGIS Intersect tool
192
questions
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17 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
votes
1answer
92 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....
1
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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 &...
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0answers
24 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
votes
1answer
48 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
votes
1answer
41 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 ...
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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
votes
3answers
106 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 ...
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20 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:
...
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25 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
43 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 ...
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0answers
102 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
votes
1answer
60 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
votes
2answers
69 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
vote
1answer
51 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
votes
1answer
42 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
votes
1answer
27 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
vote
1answer
32 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 ...
2
votes
1answer
351 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
vote
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 ...
0
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0answers
10 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)...
0
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0answers
21 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
votes
1answer
196 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
22 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
votes
2answers
128 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
vote
1answer
28 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
votes
2answers
196 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
vote
2answers
57 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
vote
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 ...
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0answers
20 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
votes
1answer
21 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 ...
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0answers
37 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 ...
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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 ...
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0answers
14 views
Dynamic (auto-refreshing) import of a polygon attribute to a point lying within this polygon
I want to achieve something similar to what was discussed here. Except I would like this attribute to be automatically updated if I change the attribute of a polygon (its name specifically) or move ...
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0answers
17 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
votes
1answer
51 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
131 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
...
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0answers
24 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
votes
1answer
74 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
14 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 ...
4
votes
0answers
30 views
How to add raster value with specific equation?
I am trying to develop a raster layer with the interference of streetlight in this example:
As you can see there are multiple buffer rings around a point layer. I actually want to transform this ...
1
vote
1answer
54 views
Using ArcPy with Intersect and loop
I am new to scripting.
I have around 4500 small shapefiles to be intersected with one big shapefile. The primary key is to make 4500 small intersected shapefiles.
How to do it correctly by using ...
0
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0answers
92 views
Intersect_analysis in ArcPy “The table was not found.”
Is there a bug in ArcPy? I have two features I want to intersect in a feature data set using ArcPy (this is a small part of a bigger program). Let me preface this by saying that when I do this in ...
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0answers
58 views
Adding attributes to intersected polygons from corresponding columns R
In short, I have a set of 10 polygons in Pol_large, that I want to split to individual polygons by intersecting (intersecting areas become new polygons, and old ones get cropped). In result, I am ...
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vote
1answer
108 views
QGIS Intersect tool produces two copies of intersected line
I'm using the Intersect tool in QGIS 3.10.3 on two line layers A and B to create the intersecting layer C. I can then use the Difference tool to subtract A-C and to subtract B-C, resulting in three ...
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vote
1answer
52 views
How can I get the points where two line shapefiles intersect?
I have two shapefiles that I want to compare and get the points where they cross. I would like to avoid opening QGIS or GRASS since I am trying to automate a process so I have been looking at OGR, ...
2
votes
2answers
49 views
Seeking QGIS tool for auto correcting address ranges at new intersections
I do public safety GIS, which is primarily centerline work. A tool that I have found indispensable when creating intersections where I don't have exact address point data is the Intersect Line tool ...
1
vote
1answer
2k views
Line and polygon intersection in GeoPandas/Python
I am trying to intersect two GeoPandas data frames, the first one is the street data (streets) and the second one is a buffer (polygon) around a point (buffer).
I want to find the intersection of ...
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0answers
95 views
Clip/Make difference between line and polygon layers [QGIS]
I need to clip one layer out of another, both are vector layers (one of them i got from vectorizing a raster layer). When i try to clip out "LowNitro" out of "FlandersAgriculture"
Intersect doensn't ...
