Questions tagged [intersect]
Use for questions about the ArcGIS Intersect tool
19
questions
4
votes
1
answer
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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,...
- 43
8
votes
1
answer
6k
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Generate rectangular fishnet or vector (grid cells) shapefile in R?
I would like to create a polygon of 20 x 10 degree graticules from 180, -180 to 90, -90 degrees.
To do this in QGIS, I followed:
Vector creation tools > Create grid
[Grid extent: -180, 180, -90, 90]...
- 435
3
votes
2
answers
238
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Merging attributes from point with containing polygon?
I need to develop a process for merging the attributes of each point in a SDE feature class with a polygon in a SDE feature class that contains the point to create a third feature class. The third ...
- 3,157
2
votes
1
answer
271
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Combining several layers in ArcGIS Desktop using Intersect gives WARNING 000117: Warning empty output generated?
I'm using ArcGIS 10.3
I have the following 4 layers (all are polygons)
You can find these layers in this link
DATA
Sites: 5 subcatchments (Site1 to site5) and site 5 combine all
subcatchments ...
- 899
4
votes
3
answers
2k
views
Intersect multiple layers at once QGIS
I'm very new to QGIS and am just learning the intersect function. I have about 10 polygons that overlap (not perfectly) and one layer of about say 15 points. I want to know with which of the polygons ...
- 41
4
votes
3
answers
682
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 ...
- 131
4
votes
2
answers
15k
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Merging Attributes of points into polygon using ArcMap?
I am using ArcMap 10.
I have points layer which the attribute looks like this:
FID Shape ID Lat Long
0 Point 2065 -5.51666 106.48333
1 Point 2319 21.93333 120.73366
I also have ...
- 237
3
votes
1
answer
458
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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 ...
- 201
2
votes
2
answers
1k
views
Finding overlay percentage between two polygon shapefiles
I have two layers that I am currently working with: 1. Parcels/property boundaries and 2. Wetlands
I am trying to determine the parcels that have 0 wetlands and then for the parcels that do have ...
- 77
2
votes
1
answer
5k
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Raster intersect and gIntersection give different results in R
I'm trying to clip a polygon shapefile (species distribution) with another polygon grid. The goal is to calculate the area occupied by the species within each grid cell. I was able to do it with ...
- 73
1
vote
1
answer
53
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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 ...
- 749
1
vote
2
answers
706
views
Intersecting three polygon layers in ArcGIS?
I have three data sets of San Francisco, TerraSAR-X, ALOS-PALSAR, Radarsat2. I have extracted KML files using Envi Sarscape.
In order to find the intersection of these areas, I have converted ...
- 729
1
vote
1
answer
163
views
QGIS overlay_intersects in geometry generator if points are in polygon
I have in QGIS v3.22 two layers:
polygon hex layer
points layer
I want to create a dynamic view when the points intersect on the polygon layer and fill the polygon content with some color and ...
- 383
1
vote
2
answers
5k
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turf.js intersect problem?
I have two geojson data sets. One of them is polygon feature "yolbuf" and the other one is a polygon feature collection "polygon". I want to calculate intersections of every feature in polygon feature ...
- 619
1
vote
1
answer
319
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Regrouping concat labels with overlapping intersecting geometries in QGIS
All the fields i want to show on the map are in the same layer.
All the labels have to be showed on the map.
But the concentration is high.
So i would like to concat the labels when geometries are ...
- 1,074
1
vote
1
answer
152
views
Batch updating point attributes based on values of underlying polygon using ArcGIS Desktop?
I have a points shapefile with a blank field. I want to populate this field with an attribute obtained from another underlying (polygon) shapefile. I can do this for a single record easily using ...
- 11
0
votes
1
answer
1k
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R: Self-intersection error when using intersect with two shapefiles
I am trying to "translate" worldwide raster data to European nuts3 polygons. That means I try to overlap two shapefiles to find the average value on nuts3 level.
Unfortunately, when I use the ...
- 79
0
votes
1
answer
744
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Computing geometric intersection (line-on-polygon overlay) using ArcPy?
I want to take geometric intersection of line and polygon shapefile. ArcPy has a tool:
arcpy.Identity_analysis
but it is available with "ArcGIS for Desktop Advanced" and I have "ArcGIS for Desktop ...
- 1,211
-1
votes
1
answer
3k
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Finding polygons that overlap other polygons within same layer using ArcPy? [duplicate]
I have a shapefile containing polygons. I would like to select all polygons within the layer that overlap with other polygons within the same layer.
The closest I have gotten is the Intersect tool ...
