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Questions tagged [intersect]

Use for questions about the ArcGIS Intersect tool

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Select part of a polygon that lies inside another polygon and assign it the value 1 in ArcMap [on hold]

I've tried Select by Location, Intersect, Union and Clip, but I'm stuck (and I don't get it) and I'm looking for a way to do it in ArcMap 10.5. (See Screenshot) The blue features are settlements (...
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1answer
18 views

Performing Intersect of polygon with raster, retaining ID of polygons? [closed]

I have a raster data set of land cover and a set of residential addresses (points). I want to find out what percentage of each land cover type is within 1km of each address (i.e. in a 1km buffer ...
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13 views

Intersect in poly - only NAs in intersect. Why?

I am trying to intersect a SpatialPolygonsDataframe with a SpatialPointsDataframe. The dataset I want to intersect is quite large which is why I cannot easily make a reproducible code. If anyone could ...
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2answers
83 views

Combining two spatial tables in PostGIS

I have two PostGIS tables with geometries. One with number attributes and one with letter attributes. Each table has two features (rows). I would like to apply a operation on both stables so that I ...
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11 views

Joining multiple polygon attributes

Using QGIS I'm trying to assign PLSS quarter sections to a grid overlay. How can I join/intersect/union these two shapefiles in such a way that if one polygon overlays multiple quarter sections it ...
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3answers
134 views

Using postgis to flatten all polygons in table

I have a table with many polygons. The polygons all have a name and a value. I want to flatten these polygons so that each polygon border remains as border to the resulting polygons. Instead of ...
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1answer
33 views

Intersecting data in ArcGIS ModelBuilder?

I have 432 suburbs polygons and an open space dataset comprising polygons I need to extract for each individual suburb the open space polygons inside and those which straddle the suburb boundary (Not ...
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1answer
51 views

Speed up intersection, union in PostGIS?

I have three tables: water, wetlands and parcels. I want to update parcel table with area that is covered by water or wetland (they can overlap). So I want to Merge water with wetland Dissolve and ...
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2answers
58 views

Move files from Table Of Contents to a geodatabase in ArcPy?

I have a program that selects certain files and imports them to the Table Of Contents in ArcMap. I would like to do some self intersect operations to all and put them both the original files and the ...
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1answer
51 views

Intersecting raster with polygon grid in ArcGIS Desktop?

I'm trying to generate the fractional coverage of land-cover within polygon grid cells. My land-cover is a 30m raster dataset (10008x8939 cells) and my grid is a fishnet shapefile (approximately 1km ...
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1answer
22 views

calculating share of layer refer to another layer

I have two vector layers (1) with 107 subdistricts (2) soil map with classification of the soil value. I like to calculate the share of the area of the soil map with values classified as "very_high" ...
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1answer
83 views

Determining validity of odd polygon using ArcObjects?

Using ArcGIS 10.4.1 a user in our department created a polygon and saved it to a feature class as shown below. The area covered is correct as at times it could overlap itself. I have calculated the ...
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55 views

Clip/Intersect/Union QGIS Problem

I'm trying to clip/intersect/union the following: It's UK Census output areas (yellow) and a station drive time catchment (red). I want to cut out the yellow output areas (and split those that fall ...
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1answer
46 views

Using ModelBuilder to intersect point data against multiple polygons?

I'm a novice GIS user and looking to create a model in ModelBuilder that can intersect point data which is a survey data made up of 1000's of individual points in dbf format. This data will change ...
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1answer
36 views

Difficulty using variables as input parameters for arcpy.Intersect_analysis

I have 2 variables created from a previous geoprocesses: fc = arcpy.JSONToFeatures_conversion("cslf.json", os.path.join("cslf.gdb", "cslf")) selectFeatures = arcpy.CopyFeatures_management(select, "C:\...
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1answer
103 views

Geoserver CQL file queryCollection limit

I'm using GeoServer 2.9.0 and I need to get some result using CQL_FILTER, intersects between polygon and line String layer, cql query is as follow: INTERSECTS(geom, collectGeometries(queryCollection('...
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1answer
15 views

Intersect tool unable to find feature class in Python script

I keep receiving this error: from this piece of my script: # Process: Clip arcpy.Clip_analysis(Full_Grid, NAR_U9, os.path.join(Output_Folder, "Cruise_Grid_U9"), "") Cruise_Grid_U9 = os.path.join(...
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2answers
98 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 ...
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0answers
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Finding number of links where buffer and link intersect using PyQGIS?

Created a buffer of 0.001 size at the beginning and end of each link. I want to extract the starting point and the ending point of which the number of the buffer and the link intersect is one. layer =...
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2answers
35 views

Combining attribute table of polygon and point shapefiles using ArcGIS Desktop?

I am fairly new to using ArcGIS Desktop. I am working with two different types of data. The first is a large shapefile that contains small polygons that distinguish different types of vegetation. ...
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1answer
60 views

Calculating total numbers of wells that fall into each county of table using ArcPy?

Directions: For each county calculate the total numbers of wells that fall into that county, and update the county table with the total count. This is the code I have so far. Problems: The ...
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Line and Polygons Intersect Results QGIS 3.0

Dark Green - Line Light Green - Buffer created from Line Pink Polygons - Parts of the black polygons that fall within the buffer zone I have this line going though a bunch of polygons. The result I ...
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26 views

Using Intersect function gives error code Intersect [175528_07022018]?

I´m doing field selection studies for red deer in ArcGIS. I have several years of data and have made buffer polygons base on the red deer gps positions. The buffer polygons should be integrated with ...
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1answer
45 views

Counting Block Group Populations in buffers using ArcGIS Pro?

I am trying to find the total population in 2-mile buffers to find the population 2 miles around primary care clinics. So far I have done this: Added block group outlines and joined the areas with ...
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2answers
53 views

Calculating number of polygons or points that a set of polygons intersect with in ArcGIS

I have a set of ~100 polygons in ArcMap 10.2.2 that were generated using the minimum bounding geometry tool. I have a second set of ~800 polygons generated the same way. What I need to know is for ...
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1answer
26 views

Point intersect-setting tolerances in ArcGIS Desktop?

I need to find out which polygon a series of points fall in. Normally I would do this with an intersect so I can then export the data and process it externally. As the point layer contains some ...
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1answer
21 views

Strange “inFeatures” value for Intersect tool

I am rather new to Python but I am trying to define a function that will take the output of one of my prior functions (5 buffered stream files) and intersect each unique streamBuffer file with an LULC ...
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1answer
80 views

Selecting intersected lines from two common attributes in very big data set?

I have a layer with lines representing cables. The data set is huge, over 100 000 polylines. Some of these cables lies within the same shaft, some of them lies within the same shaft as an other cable ...
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1answer
42 views

Finding intersection point of point and polyline using ArcMap?

I have two shapefiles that looks something like this: One point file and one polyline file. I want to find the points where the points and line would intersect if you drew a perpendicular line ...
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1answer
192 views

Intersect line with raster QGIS

I am looking to replicate a tool that is available in Geospatial Modelling Environment (GME) within QGIS, preferably not using GRASS. The tool is isectlinerst (Intersect Lines With Raster) http://www....
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1answer
376 views

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 ...
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4answers
392 views

Using Intersect to find where line crosses itself in ArcGIS Desktop?

Can I not generate point features where a line feature intersects itself by using the Intersect tool? I try using it with just one line input but when I run it I get a warning saying the output ...
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1answer
86 views

Selecting polygons which contain majority of area from intersected layer by polygons using QGIS?

I have two polygons layers (a squares grid (blue in image) and a rectangles grid (green in image)). Because the different polygon sizes, different squares overlap with a single rectangle. I need to ...
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23 views

Add an attribute to polygon layer based on if it intersects with another layer

I have a layer of buildings and want to give it each polygon an attribute of 1 or 0, based on if it intersects a flood extent. Basically, a flooded or not flooded attribute.
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1answer
30 views

Intersect tool in ArcGIS merges output points if they intersect same line segment

I wrote a quick script to automate the intersect geoprocessing. There are 2 inputs, Polyline A & Polyline B, and 1 output- a point file with XY where the two lines intersect. Problem is if the ...
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1answer
60 views

Intersect outputs shapefile with null values

I have a model that iterates through a folder of field boundaries (polygons) and produces an intersect against a shapefile of points. The output is then a point shapefile for each boundary. Note: ...
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35 views

Wrong rasterize a buffer shape after intersect with QGIS

I made two concentric buffers with 90-100km radius, from point shapefiles (hydroeletric dams here: http://maps.csr.ufmg.br/) cropped from Legal Amazon shape (http://www.dpi.inpe.br/amb_data/Shapefiles/...
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1answer
24 views

Using Intersect to combine multiple layers: correct and zero results

I have four rasters with cells of 5x5 arc minutes. I transformed the rasters to vectors/ shapefiles. The cells overlap, so I used intersect to combine the layers. It dawns on me that this was not very ...
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1answer
57 views

Topology error in ArcGis

I am trying to intersect a large feature class (118692 elements) with a grid (58000 elements) but I get an error message. Traceback (most recent call last): File "Path/InterJoin.py", line 24, in &...
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42 views

Dynamic filtering based on selected Layer in ArcGIS Desktop?

I am not sure this is even possible, I have about 38 geographical polygon layers showing areas of the UK, I also have a query (point layer) that shows all of the offices around the uk. What I am ...
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2answers
471 views

Intersecting linestrings with polygons in Python [closed]

I have two shapefiles, one is a 1x1 km grid displayed as polygons and the other one is a street network displayed as linestrings. I want to cut the linestrings where they intersect the boundaries of a ...
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2answers
138 views

OGR - Error trying to intersect two layers

I'm trying to intersect a buffer with a point shapefile using OGR, but when I run it, I get this error: Traceback (most recent call last): File "C:\Users\xxx\eclipse-workspace\xxx\Final.py", line 40,...
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0answers
95 views

Calculating number of residents living within service areas using ArcGIS ModelBuilder? [closed]

I'm trying to build a Map of service areas of several facilities. In addition, I want to calculate the number of residents living within those service areas. Therefore I have a Layer of Census-...
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2answers
977 views

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 ...
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1answer
1k views

Buffer and intersect using turf.js and leaflet

I have 2 geojson feature collections in leaflet. One of them is road and the other one is parcels. I want to calculate buffer for road and then intersect this buffer layer with parcels. How can I do ...
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1answer
119 views

True GIS clip of polygons + attribute table

How can a true intersection/clipping of polygons be done in R? Problem description: Shapefile1 contains only one feautre without attributes (or - at least - attibutes don't matter). Shapefile2 ...
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2answers
67 views

Calculate area of two intersecting rasters

I have two large rasters: One defining zones (private properties, with unique value for each property) and one of land cover change (deforestation data, with values for the year it has been deforested)...
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51 views

Using Intersect and dissolve to divide district into certain regions with data of interest without losing spatial data in ArcGIS Desktop?

I am using an intersect/dissolve feature workaround in ArcGIS Desktop 10.5. I have a layer of districts of a city and another layer of parks in the whole city /layer of noise amount around big ...
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1answer
330 views

Getting all Null when spatial joining lines with polygons (ArcGIS Desktop 10.5.1)

I'm trying to append the attributes of the lines (0 or 1) to all the polygons that they intersect (take the mean if multiple lines exist), as shown below. The polygons, lines and the DataFrame are ...
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1answer
45 views

QGIS— Find zipcode boundaries bisected by city boundaries

I've tried the intersect function but that also returns small zipcodes entirely within a city. Ideally, I just need zipcodes that extend beyond city lines.