Questions tagged [spatial-join]

To join the attributes from one spatial data layer to another using their common location

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22 views

“Join Attributes By Nearest” in QGIS Graphical Modeler Shifts Attribute Field Order

I am using the QGIS Graphical Modeler to sample a DEM using two created point features (road & pipeline) then use a spatial join to find the three closest road locations to a pipe location. The ...
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11 views

How “Pass Against All Base” Criteria work in SpatialFIlter in FME?

I tried to find out any example or details about pass criteria shown in "Pass against All base" in Spatial filter but no luck. Can anyone explain how its work ? If example Base is Parcel ...
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1answer
38 views

When SpatialFilter does spatial relationship between base and candidate how it link if one out of many in FME

I would like to know how this mapping works when SpatialFilter does spatial relationship between bases and candidate. As per "Pass Criteria: Pass Against One Filter. Each address point only needs ...
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2answers
171 views

Why does it matter which geometry I transform in a spatial query?

I am using PostGIS and have two tables. One containing points of start-locations in EPSG:4326 (about 3 million records in total) and another one containing county-polygons in UTM EPSG:25832 (about 30 ...
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18 views

Absorb data from dxf texts to near lines

So, I have 2 dxf files, one with lines and another with nodes (they used to be texts measuring the lines), and I need to extract the text from those nodes and assign it to their corresponding lines. ...
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Arcpy SpatialJoin performed in_memory not returning any rows

Background: I am writing a tool to automatically project a layer (vector or raster) in ArcGIS Pro to its appropriate UTM zone. Approach: The entire UTM zone grid is stored in a geojson string inside ...
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1answer
18 views

Spatial Overlapping - Filter by % of Coverage

I am working with 2 Polygon Shapefiles: parcels & wetlands Essentially what I want to accomplish is to filter the parcels dataset, where I only keep parcels that contain less than 50% Wetlands. ...
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19 views

Appending two Joined layers

I have two polyline shapefiles, Green and Gold which are supposed to match but don't. Gold is larger than green, and slightly offset. Some line IDs are a match, but other IDs have been changed. I am ...
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1answer
19 views

QGIS: No values in field after creating spatial index

I want to join a vectorlayer with a grid using the algorithm "join attributes by location (summary)". It took hours to execute, but it worked. Then I found This thread which told me I have ...
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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 ...
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1answer
25 views

Matching polygons to intersecting polygons using ArcMap

I am trying to match a set of polygons (A) to another set of polygons (B) using ArcMap. Both sets overlap themselves, and each other. Here's an example of what it looks like in my data: The green ...
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1answer
40 views

Retrieving attributes from multiple polygons intersecting a given zone (QGIS)

I am trying to find a way to display relevant information for a given zone based on all the layers that it intersects. For example, I'm studying five zones and I'd like to know for each of them which ...
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17 views

How to calculate the area of multiple polygons and show it in another feature in ArcGIS?

I am trying to calculate the area of vegetation (A) per municipality (B) for all state (645 municipalities). How to do it respecting the boundaries of each polygon (B)? The total area per municipality ...
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29 views

Automatize spatial join when creating an new feature [duplicate]

I'm working with QGIS an I have a polygon and a line layer. The polygon layer defines a certain area and each polygon has its own specific ID (something like "ARC1" oder "GZT2"). I ...
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2answers
36 views

Finding details of both overlapping shapes using ArcGIS Pro without Advanced level license

After Understanding Union analysis output using single feature class with overlapping polygons in ArcGIS Pro I now have a better understanding of that tool. However, I have a single polygon Feature ...
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Carrying attribution from several points to single underlaying polygon to create copies of polygon with unique attribution using ArcGIS Pro

I am using ArcGIS Pro to manipulate some property parcels data. I have a parcels polygon layer with the parcel geometry, and a points (PINs) layer with the property attribution information. Most ...
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2answers
98 views

GeoPandas sjoin largest filter by overlap

I am using GeoPandas to join two geo dataframes with the parameter how="inner", op="intersects". Due to nature of the files a larger percentage of the files are duplicates (in ...
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23 views

Spatial join (Points to Polygons) joining points that do not fall inside polygons to attribute table

I am using ArcMap 10.6.1 and am having trouble with a spatial join. I have created 250km buffer polygons around some of my sampled data points and I am now trying to join some modelled data to those ...
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23 views

Spatial join two identical layers

I'm working with Python and GeoPandas. I have two parcel layers that are identical and in the same coordinate reference system. The parcel number field is not unique so I am unable to join on that ...
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1answer
35 views

ERROR: more than one row returned by a subquery used as an expressionSQL state: 21000 Why and how it happens?

I want to update an empty column with a join : UPDATE icpe_modifie SET region = (SELECT nom_reg_m FROM icpe_modifie as icpe JOIN regions as reg ON ST_WITHIN(icpe.geom, reg.geom)) icpe_modifie is a ...
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9 views

Joining/Extracting Attribute Data from two SpatialLinesDataFrames with no common Attribute

I have two rather large datasets, but I will only show a "single" subsample here. I have one SpatialLinesDataFrame (RFI) shown here: and another (CLASS): These two line features are the ...
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1answer
32 views

QGIS joining two almost identical line features

I am working on a project in QGIS georeferencing and merging some raster maps that include road data. In the original raster the roads have data assigned to them according to their color in the raster....
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1answer
65 views

Virtual layer with spatial query crashes in QGIS

Working with QGIS 3.10. Details: This should be really simple, but I am unable to solve it: I've got a point layer with two numeric fields "max" and "min", and a polygon layer. I ...
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1answer
35 views

Adding field by proximity using ArcMap

I'm using ArcMap with the Basic license. I have turnout gates (points) on or very close to irrigation facilities (lines). The irrigation facilities have a field for type (canal, pipeline, culvert, etc....
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1answer
44 views

Spatial join with overlapping polygons

I have a dataset with two layers: a Planned Projects polygon layer and Roads represented by lines. The lines intersect one another, the Planned Projects polygons overlap. Using a spatial join that ...
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1answer
25 views

ST_GEOMETRY points: get attribute of intersecting polygon

I have an SDE.ST_GEOEMTRY point feature class. I want to create an SQL query from the points. The query would perform a spatial join/intersection with an SDE.ST_GEOMETRY polygon feature class. An ...
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27 views

Failure to pick up attributes following use of ArcGIS Pro ModelBuilder: Iterate Feature Classes

I have a folder containing numerous point shapefiles (Species occurrence records) and (in a separate folder) a multipolygon shapefile of small parcels of land. For each species, I need to extract all ...
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48 views

QGIS 3.10 crashes constantly when performing join with virtual layer

I want to create a pie-chart map showing the amount of groundwater extracted from different aquifers within different administrative areas like in the picture below: I have a shapefile with ...
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2answers
65 views

Combining data with partially overlapping polygon layers? (QGIS)

I am new to QGIS. I have a dataset with Baltimore neighborhoods, and then a series of datasets for Baltimore census tracts dating back to the 1930s. My goal is to look at how population and the amount ...
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1answer
70 views

Plotting data with centroids only

I am fairly new to spatial analysis and I am trying to create a map of the spatial distribution of pollution in the UK using publicly available data retrieved from https://uk-air.defra.gov.uk/data/pcm-...
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46 views

Improving PostGIS performance for spatial intersection

I have a fairly large table with line geometries, representing roads (about 900k rows) and a table with polygons representing land use (about 8k rows). I want to know what type of land each road ...
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1answer
35 views

Is there a way to merge a grid with a shapefile?

I'm using QGIS and I have a shapefile that's a grid I created and another shapefile that is points. I would like to join them so each grid section is linked with points that fall within in. The grid ...
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45 views

Create non trivial join/view via PyQGIS in a QgsProcessingAlgorithm

In the context of QgsProcessingAlgorithm, what is the best way to take information from several layers and output based upon that combination of layers? or: What is wrong with my layer creation? The ...
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27 views

How do I join ACS data to this Census shapefile?

I'm using QGIS. I am trying to join the .CSV data from the American Community Survey (ACS): https://gisdata.mn.gov/dataset/us-mn-state-metc-society-census-acs With the shapefile from the 2010 Census: ...
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80 views

Join attributes by location in QGIS 3

I wonder if there is a better way to join attributes based on location. I have a vector layer with polygons representing lines. Layer A is the layer where I want to take the correct attributes and ...
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35 views

Missing connections between line and points

I have two shapefiles line layer (Blue color) points layer which represents houses (Green color)) I am trying to connect line with points (houses). For that, I used closestSegmentWithContext as ...
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1answer
29 views

Create a table of points that intersect with polygons in ArcGIS Pro

I have a set of polygon and point data. Each polygon shares the same area with dozens of points. I want to create a table that shows which points intersect with which polygon. What is the best tool ...
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1answer
84 views

Assign nearest point values to polygon

I am using 3 feature classes in ArcGIS 10.7 an irregular spaced set of data points. a set of regular spaced points 100m apart that covers the data area of 1, generated using Fishnet. a polygon of ...
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93 views

QGIS virtual layers and slow performance

I am using QGIS to create a layer comprised of counties in 7 northeast US states. I start with the US census 5M cartographic state borders file, and then set a filter on that layer: "NAME" ...
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1answer
13 views

Choosing tool to add field based on nearest neighbor using ArcMap

Using ArcMap, I have two feature classes. The first is my polygon parcel layer with crop type, irrigation type, owner, etc. The second is my line canal layer, which has a field for our water schedule (...
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2answers
79 views

Problem with spatial join of large shapefiles

I want to combine the attributes of five shapefiles into one shapefile using QGIS. Therefore, I used several data processing steps including clipping the five shapefiles to the boundaries of my ...
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2answers
37 views

ArcPy Spatial Join, use join geometry not target

My goal is to create a layer of lines representing the closest street segment to a set of points. The code: arcpy.SpatialJoin_analysis( target_features=point_req, join_features=...
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1answer
17 views

Combining information from two point layers based on the nearest neighbour relationship

I have two layers: One a modeled dataset with points on a 1x1km grid across the globe. I also have another layer which is my own data points which are scattered across the globe. What I want to do is ...
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0answers
25 views

Contour lines from AutoCAD to QGIS: how to automatically assign the right value to the Z

I have a plate of contour lines made on AutoCAD (contour lines do not have a Z). The Z is indicated only for some curves but in a text format. If you import the table in QGIS the situation is this (...
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24 views

Interpreting results from Join Attributes by Location (Summary) in QGIS

I have 2 layers Map of Chicago by ZIP code Vector data of grocery stores (obtained by taking the point data of grocery stores, converting it to a heat map, and then using Raster Pixels to Point to ...
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2answers
236 views

Combining CSV and shapefile to find area name where stations are located

I have one shapefile with marine areas. The other is a CSV file with some station names and coordinates. I would like to get table with stations names and corresponding marine area names, where the ...
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1answer
78 views

Concatenating names of the districts and the numbers of the sections in the polygonal layer of streets based on intersection

In QGIS 3.14 I want for a layer with street contours (polygons) to record the names of the areas through which the street passes and the numbers of cadastral plots through which it passes. If a street ...
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2answers
2k views

Error while using sjoin in GeoPandas

I have a problem with GeoPandas sjoin, I work with Ubuntu and I want to use: opolskieadresy = geopandas.sjoin(smallopolskie, adresy, how="inner", op='intersects') and i'm getting error: ...
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30 views

Merging multiple point shapefiles that have same coordinates but different years

I am using ArcGIS Pro. I have 35 shapefiles of point data, with each layer representing a different year of data collection. Each layer has points with the same coordinates. I want to bring these ...
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1answer
47 views

Match centroids from one dataset with polygons of another

I want to make a data frame showing which voting precincts are in each school zone. To do this, I want to see which precincts' center points are in which school zones. library(sf) precincts <- ...

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