Questions tagged [intersect]
Use for questions about the ArcGIS Intersect tool
231
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SAGA intersect syntax for QGIS
I cannot find the exact python syntax for saga:intersect anywhere. The following throws "Could not load source layer for A: no value specified for parameter". It prints
laender = QgsProject....
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1
answer
38
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Setting a minimum overlapping area using overlay_intersect in QGIS
I want to use the overlay_intersects function to obtain a new column on a grid layer with 0,1 values.
The binary results should come from the eventual overlap between my grid and the Shapefile of a ...
- 1,676
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189
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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 ...
CommunityBot
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2
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1
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67
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How to automatically count intersecting geometries by excluding a layer and adding new layers with any layer name
I am using the following expression to count and label the number of geometries of a layer (POINTS1_TO_INCLUDE) that intersect with polygons of another layer (POLYGONS):
to_string(
round(array_length(
...
- 60.9k
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3
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174
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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 ...
- 135
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Using the intersect function on pixel values from SampleRegions
I have a featureCollection of pixels (called "Pixel_values")from using sampleRegions and a feature collection of lineStrings (called "Hydro"), some of which intersect the pixels. I ...
- 9,757
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4
answers
171
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QGIS: Calculating the area of category overlay between 2 shapefiles
I have 2 shapefiles (A & B). The polygons in layer "B" are categorized into 8 categories (1-8) and I want to add 8 columns in layer "A" with the areal distribution of the ...
- 436
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218
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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 ...
CommunityBot
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109
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Arcade expression to calculate field in point dataset based on whether its features lie within specified polygon dataset using ArcGIS Pro ModelBuilder
Can anyone help with an Arcade expression to calculate a new field in a point dataset based on whether or not each point feature is within a polygon dataset in ArcGIS Pro ModelBuilder?
I have a point ...
- 72.5k
2
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1
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35
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QGIS 3.6 on Mac: Extracting attribute value of polygon from another layer when it overlay
I have a layer labeled "Boundaries" with a set of polygons. I have another layer with a set of points labelled "Locations". The "Boundaries" polygons have an attribute ...
- 1,075
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38
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Assign grid squares to polygons that most contain them
I have a featureclass that is a grid of the countries of the world (88,110 squares).
I am trying to assign all the grid cells to the country that each cell MOST contains (from a shapefile of country ...
- 41.8k
3
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1
answer
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Difference between Crosses & Intersects - Shapely (Python)
I have two questions :
I have some lines (eg: road network). I want to find coordinates of each junction.
Should i use crosses or intersects function from python's Shapely module? They are giving ...
- 53
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50
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QGIS Take the attribute from the intersection
How to make an intersection function condition for a field calculator?I have three layers-buildings, parcels_old, parcels_new.In the layer of buildings i need to move parcel number ("n_parc" ...
- 31.2k
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Error in using ArcGIS Intersect tool [duplicate]
I want to use ArcGIS to calculate the change matrix of land use type and calculate the intersection of the vector data of land use type of two years, but he made a mistake. How to solve it?
The error ...
- 64.7k
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53
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Select by attribute and location within a for loop? [closed]
I have dozens of feature classes in a project geodatabase. I have the code that will identify all the misplaced wells in each dataset, but for the life of me I can't figure out how to get the lines of ...
- 2,166
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Select polygons that intersect points in QGIS using WFS data
How to select polygons that intersect points in QGIS using WFS data? I am trying to select polygons from a WFS remote database that intersect a local point shapefile. The selection by location does ...
- 19.7k
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66
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Adding raster value with specific equation using ArcMap
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 ...
- 704
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48
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R - Identify on which street a point is located based on geographic coordinates
Given a tibble s2map that contains street names and the geographical coordinates of points located on these streets,
head(s2map)
# A tibble: 6 × 13
# Groups: Street [1]
Street ...
- 59.4k
1
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1
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158
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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 ...
- 31.2k
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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 ...
- 64.7k
2
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2
answers
228
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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 ...
- 19.2k
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51
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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 ...
- 64.7k
2
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44
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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 ...
- 19.7k
0
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34
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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 ...
- 64.7k
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2
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1k
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Getting values within intersect layers and autofilling attributes to another layer form when creating new object [closed]
When I am creating a point that intersects on a polygon, how can I get values from the attribute polygon and autofill the attribute in the point layer?
I am using QGIS 3.12
- 64.7k
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1
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828
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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 ...
- 64.7k
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0
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27
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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 ...
- 19.7k
2
votes
1
answer
99
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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 ...
- 19.7k
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79
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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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84
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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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193
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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 ...
- 60k
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201
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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 ...
- 19.7k
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74
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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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20
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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 ...
- 64.7k
2
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2
answers
69
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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 ...
- 64.7k
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2
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662
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Calculating the total area from two intersected polylines using ArcGIS or Python
If two polylines intersect with each other and there are more than 2 intersect points, there is more than 1 closed area will be created.
How can I get these areas as polygons in ArcGIS Desktop or ...
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62
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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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238
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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 ...
- 13.8k
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66
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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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72
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Selecting records from shape that do not match another table's values using ArcMap
I am using ArcMap 10.4.
I have a shapefile that results from an Intersect between a polygon shp and a point shp. So my resulting shp is a point one! One of the field in my intersect resulting shp is &...
- 64.7k
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393
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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 ...
- 60.9k
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2
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135
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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 ...
- 63.8k
2
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answers
150
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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-...
- 64.7k
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62
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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 ...
- 19.7k
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vote
1
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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 ...
CommunityBot
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2
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179
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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 ...
CommunityBot
- 1
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199
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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 ...
- 64.7k
0
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273
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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 ...
- 19.7k
3
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1
answer
159
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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 ...
- 13.3k
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2
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319
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Intersect tool in QGIS 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 ...
- 28.8k