Questions tagged [intersect]
Use for questions about the ArcGIS Intersect tool
221
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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 ...
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0
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17
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Intersect warning 000117
I have tried repairing the geometry on both files, but it keeps giving me the same warning. Both are shapefiles, in same coordinate system. Both are large files. One has over 272,000 rows, the other ...
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2
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2
answers
113
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Checking intersection between two layers with different projection using PyQGIS
I have a point layer and polygon layer
polygon layer contains espg:6344
point layer contains espg:4326
project Crs is espg: 4326
polygon Layer contains rectangles and points are the centroids of ...
- 33
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29
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Moving points out of intersecting polygon using ArcGIS Pro
I have set of points overlapping/intersecting a ditches polygon. Similar to the following image.
Is there any tool available in ArcGIS Pro to move these points to the nearest location out of ditches ...
- 206
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27
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Line has been split, total line is different from unsplit line using ArcGIS Pro
In ArcGIS Pro, I've done a intersect on a line based on an area boundary.
When I compare the length of the intersected lines, it should equal the length of the original line. However there is a slight ...
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30
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Selecting unclassified road line (One layer) that miss survey data (another layer)
I am working on QGIS 3.10. My goal is to select all the Unclassified road that do not have any scheme. For that I need to overlap the two layers (Unclassified road network and schemes) together in ...
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182
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Checking intersection between polygon and geometry in GeoJSON
I have a GeoJSON file with different geometries(polygons). I'd like to find if my polygon intersects with any of the file's geometry.
I am not going to paste the file here as it is a long one, but can ...
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64
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Why do clip and intersect give different results (geometry)?
I have a boundary (clipper) and street data (lines, clipee). I calculate the sum of the street length within the boundary for communities.
From a performance perspective this is faster to do over many ...
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22
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Attributes for points created by Intersect tool
Scenario:
I am using ArcMap 10.3.1 to find the locations where an animal crosses a road from GPS data and the associated attributes such as X and Y (which I can calculate) and the date and time of ...
2
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1
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93
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How to get a list of lines, with a list of polygons that they intersect? [closed]
I am a new user in a PostGIS environment and don't even know where to start.
I have two tables, one storing lines and the other storing polygons.
I to create a query that can be used to get a separate ...
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53
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Using Intersect with arcpy.GetParameterAsText() and ArcMap
I'm trying to use the intersect tool, with one of my inputs being from a get parameter as text. As I don't have an advanced licence I have to iterate through the list to run the intersect on each item ...
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64
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Using intersect analysis within if loop as part of function
I'm currently trying to create a function for calculating an intersect of one of two shapefiles with another shapefile. I am later looping through the list of files and, depending on which one the ...
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41
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Bring Line ID which intersect with a point buffer in arcpy
In ArcPy, I want to take each point buffer one by one and check which two lines intersect with it and bring the ObjectID in order to use those two lines ID in this script.
import arcpy
arcpy.env....
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52
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How to prevent self-intersection when using Intersect tool in ArcGIS?
When using the Intersect tool in ArcGIS (Desktop 10.8): I have two inputs, a polyline FC and a polygon FC. I want to get the intersection of each polyline feature with the polygon features, so the ...
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76
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How identify if polygons from layer A are in same polygon from layer B in Python
I have two polygon layers, layer A and layer B. Layer B polygons are much bigger than layer A polygons. Now, some of the little polygons from layer A are located in the big polygons from layer B, and ...
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52
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Spatial Joins - Intersect then non-joined Nearest
Is there a tool to join by interest and then for those that are not joined, join by nearest - all in one calculation? If not, maybe this is a valid feature request, to combine these two tools together ...
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Predicting future coastlines based on TIN/Raster DEM and elevated polygon using ArcMap
I am trying to figure out how I can create projected future coastlines by intersecting an elevated polygon (representing future sea level) with the TIN/DEM of my study area.
Does anybody know how I ...
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34
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Intersection of 3d layers in PostGIS with SQL Queries
I am currently working on a project for Uni with PostGIS and SQL Queries. I am trying to calculate the intersection between two 3d layers.
Based on online tutorials I came up with this query.
SELECT ...
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1
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119
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QGIS join by location not working between two shape files
I am getting this weird error while using join attributes by location in QGIS, I have two layers - Source & Target. I am joining by target to source features using intersect option in join ...
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44
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SQL: detect invalid points outside an overlapping feature
I am using the latest QGIS software.
I am working on this script for the basic selection of invalid geometry points beyond the overlapping context, and how would I finish writing it in the WHERE ...
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2
answers
56
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Delete geometries based on intersection with another layer
Working on QGIS, I have two layers
1. buildings (polygons)
2. flood area (polygons)
I want to get rid of the building located in flood plains. In other words, I need to find where those layers ...
- 19
2
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67
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Checking if one point from sf object falls within a specific polygon from different sf object in R [closed]
I have one sf object in R that consists of millions of GPS points of different persons (each point includes ID for each user). I have another sf object that consists of polygons that correspond to 100-...
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53
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Intersecting a polygon with a line
I'm having an issue intersecting a polygon with a line in QGIS. The split with lines option has worked for me so far but for some reason wont work for this polygon on the left. I need the polygon top ...
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13
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Determining degree of intersection between two polygon feature layers limited by time of occurrence using ArcGIS Pro
I have two polygon feature classes.
One relates the extent of silviculture treatments on USFS lands across the western United States:
The other relates all recorded fire events across the same extent:...
0
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262
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How to select or intersect FeatureCollection object with an Image object in GEE
I am working on some coordinates taken on the field (corresponding to the presence of a certain plant in a natural park), and on a code that created a mask, on GEE, initially coming from Sentinel. ...
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23
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Using Intersect on data from a geopackage results in empty dataset
This question is somewhat related to a previous question of mine: Using Clip on data from a GPKG results in empty result set - WARNING 000117
I have a lot of datasets of which I'm only interested in ...
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80
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ArcMap - Two lines clearly intersect but the intersect tool disagrees
ArcMap 10.4.0.5524 for Desktop. No internet connection.
Two sets of lines (both in a file geodatabase). I want to get the points where they intersect. I use the intersect tool with both sets of lines ...
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49
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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 ...
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117
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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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141
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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 ...
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1
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112
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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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65
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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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202
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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 ...
- 173
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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 ...
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1
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181
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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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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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196
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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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1
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85
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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 ...
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340
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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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35
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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 ...
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4
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3
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368
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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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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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43
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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 ...
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237
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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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450
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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 ...
3
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1
answer
288
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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 ...
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2
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81
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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) ...
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350
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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 ...
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59
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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 ...
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345
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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