To join the attributes from one spatial data layer to another

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20 views

Consolidating many-to-one overlapping polygon feature values into another polygon attribute using ArcGIS for Desktop?

I have a situation similar to the one here: Spatial join - many to one however the desired end product is a dissolved/aggregated feature that collects up all the values it was joined to. For example ...
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0answers
22 views

Joining polygons to points when the points fall in the intersection of polygons. QGIS

I am using QGIS. I am hoping to join a set of geocoded points to polygons in such a way that the new snapefile will be points that have a new field which lists the attributes of the polygon it lies in ...
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1answer
270 views

Spatial Join of Polygons to Polygon Grid with Shared Boundaries in ArcGIS Desktop?

I have polygons containing an attribute to be summed by a polygon grid. the polygons with the attribute always share borders with each grid cell and never extend outside any grid cell (the grid has ...
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2answers
26 views

Performing spatial join on existing feature class?

I have feature classes containing points (Events) and polygons (Sectors). I want to add a new field to the Events FC to store a field from the Sectors FC. The Events FC would be the Target Features ...
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25 views

How to do a Python / Fiona / Shapely equivalen to an ESRI ArcPy SpatialJoin?

I'm a GIS noob, but I am trying to learn as quickly as I can. Please bear with me. How can I identify what structures from one layer are WITHIN in some body of water in another layer? My problem ...
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2answers
197 views

Performing spatial join in Spatialite (QspatiaLite for QGIS)

I'm trying to spatially join and summarize the attributes of a set of buildings to a set of containing parcels. There are (potentially) many buildings to each one parcel. Here is the query as I'm ...
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20 views

Moving one polygon layers data to another polygon layer based on distance

I'm trying to set variable shape polygons to a hexagon grid. I want to do something like a spatial join, but without merging data as in "One_to_one", and only having one polygon fill one hexagon ...
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1answer
259 views

Join traffic data (point) to a road network (line) - Section between two roads - ArcGIS

I am trying to analyze the vehicle traffic in Melbourne's (AUS) road network. I have two files: the traffic data (point data for a given latitude and longitude with the average hourly traffic between ...
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1answer
40 views

How to do a Spatial Join after opening a GDB file with Fiona?

After I successfully open up an ESRI GDB file/folder with Fiona, what open-source Python package should I use to do a spatial join? I was told Shapely is not the appropriate package for this. I am ...
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1answer
34 views

Assign similar ID to points inside a polygon

I have 3 input datasets of points. What I'm trying to do is to assign a common ID code to the points that are close to each other (no specific distance). I'm using a ModelBuilder to achieve this : ...
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30 views

Spatial AND temporal join between two point data sets

I was hoping I could get some pointers in how to approach this issue, which is tricky version of a spatial join. I have been searching and I can't find a particular solution to what I need. I have ...
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43 views

Update Join Attributes by Location

I have a shapefile with points, and a shapefile with polygons. I want to sum the attribute value of all points that are contained in a polygon, and I'd like to do this for each polygon in my dataset. ...
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1answer
60 views

Postgis spatial join performance (point on area)

I need to update a single attribute of a large table of point data with a result of a spatial join (point on area operation) on a polygon table. I'm using the below query but wondering if this is the ...
2
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1answer
65 views

Sum line lengths for each grid cell in QGIS

I'm trying to get data from a polyline layer into a grid (I've created this with regular points, points to polylines). I guess at first I have to cut all polyline segments at the grid lines and then I ...
1
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1answer
26 views

CRS and Spatial join problem

I try to match two layers. First one is point-type with cities in Europe. Second one is grid layer (polygon) with elevation value. What I want to achieve is to to join the "Z" value from grid layer to ...
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1answer
74 views

Missing distance field after Spatial Join? [closed]

When I use Spatial Join, the distance attribute is not being added to the resulting shapefile. I'm trying to use Spatial Join to assign each of 16,151 points to one of three zones (see screenshot), ...
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2answers
47 views

Joining points to points on the same road

I know there may be a really simple solution to this query but I have been looking for one for ages and have not been successful. I have points that represent mammal sightings on roads, as well as ...
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228 views

Spatial Join with ArcGIS ModelBuilder?

I have a bigger model done with ModelBuilder. In the end I want to make a spatial join of a polygon (target) with points (join) (see figure below). The model runs with any error or warning message, ...
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1answer
34 views

How can I fix my spatial join issue?

I am using ArcGIS. I have two different files. The first file is from the United State Census. It is a file consisting of the census tracts for 1990. Each polygon has information that labels its ...
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1answer
50 views

How to spatially join several attributes of one layer to a unique one on a second layer

My goal is to link all the attributes of an input layer (that has a UTM CRS projection matrix and point coordinates but no geometries) to the geometries of another layer based on the spatial analysis. ...
2
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1answer
53 views

Update column/Join in QGIS similar Mapinfo

Looking somewhat similar to UPDATE COLUM option ( for join) MapInfo in QGIS. This exists ?
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1answer
27 views

Performing join on simultaneous spatial and attribute criteria in ArcGIS for Desktop in Modelbuilder?

A similar question was posted here, but I have an additional problem that seems to make the answers there unlikely to work. I am interested in performing a spatial join between point feature class A ...
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2answers
2k views

How to spatially join polygon fields onto a point layer in QGIS?

I have gridded depth points in CSV format that I'm trying to add other map data to, in additional columns. I've tried joining fields, hoping that I could link the Shapefile data to the csv, but when I ...
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27 views

How to extract data from multi-ring buffers?

I am using ArcGIS with full extensions. I have a Uni project which requires me to extract the towns/cities that lie within buffers of landfill sites. I have managed to extract the total population ...
0
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1answer
25 views

Adjusting ArcMap Model to Create 1000 Iterations of Random Data Files with Spatial Join?

I have created a model that creates a random point data set for a certain area, conducts a spatial join of these points to polygons, calculates the frequency of a certain field in the joined table, ...
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1answer
36 views

Adding a column to polygon table with correct corresponding address

I have 2 shapefiles: one with polygons (buildings) and their properties other one is a point address shapefile - it contains points that are inside polygons from the other SHP, but it's still ...
0
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1answer
481 views

Spatial join point data to polygon shapefile and count a variable

I would like to perform a spatial join from point data to a polygon shapefile. In the point data attribute table there is a column called {quality} and I would like to count each category from the ...
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2answers
133 views

Spatial Join Yielding NULL values in ArcPy?

I'm writing an automated script to do some data processing of address points. One stage of the process is to retrieve 19 fields of information from various polygon layers that the Address Points are ...
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22 views

ArcGIS 10.2 Model builder Spatial Join user input

I have a model that runs a spatial join and then adds and calculates fields to that joined table output. The model is designed so that a user can change the target features and join features. I have ...
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1answer
29 views

ArcGIS 10.2 Modelbuilder Spatial Join is not generating an output

I have a model that runs spatial joins in a lines to points relationship and then adds and calculates fields to that join. The parameters are one to one and intersecting at 1 foot. The search ...
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1answer
68 views

Spatial Join in Python Field Mapping with Multiple Merge Rules

I'm performing a Spatial Join with a polygon (target) and a point (joinFeature)- which has 5 fields in it that I need to "sum". I have written a Spatial Join and (after many long days) gotten the ...
2
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2answers
134 views

How to link polygon features in one layer to polygon features in another, using largest overlap in QGIS or GRASS [duplicate]

I have two polygon layers: the first one contains small land lots (green in the image), the second one contains large zones (the purple line in the image attached separates 2 such zones). I want to ...
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1answer
1k views

Spatial join results different in ModelBuilder and right-click join? [closed]

I am trying to incorporate a simple spatial join in a model but the spatial join options in ModelBuilder are different from the right click-->join options. How can I do the join as in the image below ...
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68 views

How to join specific attributes of two polyline shape files that overlapped but information is stored differently (QGIS)?

I have just started using QGIS (2.12.3) and I need your help. Overall, I have two polyline shape files with the same geometry (the one layer overlaps the other), but the information is stored in a ...
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2answers
56 views

spatial join that works like select by location?

Using ArcGIS 10.2.1 I have two polygon feature classes. The features in each are identical, but they have different tables with no common attribute (long story). In each FC there are overlapping ...
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1answer
36 views

Point Distances to many buffer zones

Here is my problem: I have 72 points, and each one of those points falls within multiple 1,000 foot buffers zones. I am trying to find out the distance from the point that falls within a buffer to ...
2
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1answer
43 views

Spatial Join Hangs on Two Specific Shapefiles in QGIS 2.8

I have successfully done spatial joins with QGIS many times. However, with two shapefiles QGIS hangs or never seems to complete. (I’ve let the process run for over two hours.) I’ve tried all the ...
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1answer
23 views

Counting points on a line or polygon using join: number of points are calculated incorrectly [closed]

I am attempting to count the number of stream crossings within approx. 100m segments of a trail. I used this article to get quite close with join: ...
7
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4answers
4k views

More Efficient Spatial join in Python without QGIS, ArcGIS, PostGIS, etc

I'm attempting to do a spatial join much like the example here: Is there a python option to "join attributes by location"?. However, that approach seems really inefficient / slow. Even ...
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2answers
27 views

Keeping attribute table when converting from polygon-based feature layer to grid layer

I am trying to transfer (or extract) attribute data from a polygon-feature class to point data. I can do this for a grid file using the Spatial Analyst-Extraction-Extract multi-values to points ...
2
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1answer
58 views

Create frequency polygon from overlapping features in another polygon

Mac 10.9.5; QGIS 2.8.4-Wien; history and unioned data, in GDA94, zone 55 here. I have a polygon of fire history with a number of overlapping features. I want to create a new polygon for fire ...
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0answers
63 views

Spatial Join - Field mapping to delete and rename fields

I have a python script where the user can enter a study area (Polygon shapefile) and multiple point Features of interest (Point shapefiles). The point shapefiles are looped through and joined with ...
2
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1answer
271 views

geopandas spatial join extremely slow

I am using the code below to find a country (and sometimes state) for millions of GPS points. The code currently takes about one second per point, which is incredibly slow. The shapefile is 6 MB. I ...
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59 views

Looping spatial join in arcpy - order problems

I developed a python script where the user inputs a polygon shapefile multiple point shapefiles and within the script the polygon shapefile is divided into 1000mx1000m grid cells and the point ...
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1answer
53 views

Spatial join for multiple shapefiles (loop)

I have the following two datasets: polygon shapefile containing administrative boundaries of a City multiple point shapefiles What I want to do is to spatially join the point shapefiles with the ...
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0answers
44 views

Merging multiple fields with same parcel id yet different attribute values, while keeping all fields?

I am using ArcGIS 10.3 for Desktop. I have a property parcel layer that when Intersected, each parcel is broken up into hectares of different land covers. My question is can this be merged (or ...
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0answers
44 views

geopandas spatial join: how to find problematic row?

I have an sjoin function from geopandas that is behaving erratically: it works on some version of the "points" geodataframe but not others. merged=sjoin(points,polygons, how='left',op='within') ...
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1answer
80 views

QGIS: getting NULL values when using “Join Attributes by Location” of lines and polygons

I'm using QGIS 2.12.3-Lyon. I have a polygon layer (~130k square polygons with some small overlaps) and I have imported a road network from OpenStreetMap (via Geofabrik, ~141k road segments) for my ...
7
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1answer
151 views

Join by attribute / spatialite with SQL / left outer join in QGIS

I have a layer with polygons (let's call it "woods") that is intersected by "n" line-objects ("roads"). Every road has an unique attribute roadid. I need to add ALL the roadid's (not only the first ...
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1answer
58 views

ArcGIS - Why would spatial join return correct distances but wrong attributes

I am doing spatial joins on points and street (line) features to identify the closest street to each point. However, despite getting appropriate distances returned for each points, closest road, the ...