To join the attributes from one spatial data layer to another

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10
votes
2answers
421 views

How to perform repetitive tasks in QGIS?

I am trying to do a treatment on many feature files, so I would like to automate it. In fact, I have one shapefile with the spatial distribution of some species, and one with vegetation type. I ...
6
votes
2answers
203 views

Join multiple spatial tables by distance

I'm trying to join two tables, one which contains road names and the other just a point. After exhausting research I'm now stuck. The idea is to join up the two tables using only distance, ie, select ...
5
votes
1answer
369 views

Is there a python option to “join attributes by location”?

I am trying to perform the function join attributes by location as found on the QGIS menu Vector>Data Management Tools. I am seeking an open source python option for this. I know arcpy has a spatial ...
5
votes
1answer
592 views

Split polylines at polygon boundaries in QGIS

I have a set of contour lines and a polygon set containing glaciers. Because I want the glaciers to have blue contours, I need to split the contour lines at the glacier boundaries. I can achieve this ...
4
votes
1answer
345 views

ArcMap 10.1 SP Spatial Join Problem (lines within polygon)

I have a line layer (faults) and a polygon layer (fishnet grid). The fishnet has a risk of earthquake attributed to each polygon. I want to take that risk value and give it to the fault lines which ...
4
votes
1answer
340 views

How can you join attributes from polygons to points which are within the polygon feature using PostgreSQL and PostGIS? [duplicate]

Possible Duplicate: How to perform a spatial join of point and polygon layers in PostGIS? I don't know how to solve my actual problem. I have polygons and points (some points are located ...
4
votes
1answer
541 views

How to select the nearest lines to a point layer?

I am a beginner with GIS software and I'm working on QGIS. I have a problem joining the spatial layers. I have a layer with objects in one city and another layer with the streets. I need to attach ...
4
votes
1answer
46 views

How to select random adjacent census tract

I have set of census tracts spaced out across a city and I would like to randomly choose an adjacent census tract to explore nearby demographic data. I'm not sure if there is an easy process for ...
4
votes
1answer
395 views

Spatial join to kernel density / kernel density with polygon/point output in Arc

I'm looking for a way to join polygons to a density function for some other feature of interest. Current workflow make density raster from feature set of interest, using point/line/kernel density ...
3
votes
1answer
136 views

how to create a network from gps tracks?

I'm trying to build a network from several GPS-trakcs, to digitalize hiking routes on my land. I have several GPX-files from routes I've tracked with the gps. I managed to display them in Arcmap ...
3
votes
1answer
2k views

Spatial Join problems in ArcGIS 10.1 - intersect polygon and lines

I have hurricane tracks (Lines) and Florida county boundary (polygon) and I want to extract only those hurricane tracks that intersect Florida. In ArcMap 10.0 I used Spatial Join (from ...
3
votes
3answers
572 views

How to perform a join on simultaneous spatial and attribute criteria in ArcGIS?

I have two point layers and want to perform a spatial join on nearest distance. Normally it is easy with ArcMap. But now I have a restricting condition on the spatial join. The restriction only ...
3
votes
1answer
719 views

ArcMap 10.1 Spatial Join: 'Contains' and 'Within' question

I have two polygon datasets: electoral districts and postal code areas. I'm performing a spatial join to see which postal code areas are completely within a district (the area can touch the borders, ...
3
votes
1answer
578 views

Join attributes by location

I am trying to join multiple records that occupy the same location (polygon centroid) and have tried using the join by location plug-in but have found this does not work for me in this case as I have ...
2
votes
2answers
111 views

Spatial Join of 2 line layers offset by minuscule amount

Let's say I have 2 line layers (green & red, in the image below) and I need to transfer attributes from one layer (red) to another (green) by doing a Spatial Join. The layers are identical, but ...
2
votes
1answer
148 views

Why might Spatial Join appear to produce incorrect values?

I'm trying to do a spatial join of a point file (created from a raster) to a polygon (target), where I am joining the GRID_CODE value from the point to the polygon. I've tried a variety of ...
2
votes
1answer
30 views

arcpy: join feature class (one to one) and get feature id of each joined object

I am currently spatial joining two feature classes like this arcpy.SpatialJoin_analysis(target_features,join_features,output_features, join_operation="JOIN_ONE_TO_ONE", ...
2
votes
1answer
116 views

Collapsing the multi-row output of a one-to-many spatial join to single-row (arcmap 10.1)

I'm working with TIGER data, looking at the relationships among incorporated places and counties. Not all places are completely contained by counties; some do span multiple counties. In the final ...
2
votes
1answer
76 views

How to implement 1:n joins with string attribute concatenation?

I have a question concerning pyQGIS. I'm a QGIS long-time (self-learned) user, but just a pyQGIS newbie. I want to implement 1:n spatial join with attribute concatenation in the table. I have a vector ...
2
votes
3answers
234 views

Produce a list of polygons that a line crosses

I have a polyline feature class and a polygon feature class. What I want to do is add a field to the lines that lists all polygons that touch the line. This is effectively performing a ...
2
votes
1answer
346 views

Spatial Join Python Command to summarize attributes

I am trying to run the Spatial Join function through the python shell in ArcGIS 10. When you do the point-and-click method of spatial join, you are given a tool window with an option that asks "How ...
2
votes
1answer
99 views

Is there a work-around for a completely_within spatial join in ArcGIS? This is bugged (confirmation by Esri Inc)

I tried to perform a 1-to-many spatial join between polygons (target feature) and lines (join features) to join the lines that are completely covered by a polygon to that polygon. (the polygon is ...
2
votes
2answers
100 views

ArcMap's Join and symbology

I'm still new into the GIS World, and here's what i'm trying to achieve , i have Yemen administrative shapfile with list of governments, and districts,i also have an excel file with a list of migrants ...
2
votes
2answers
71 views

Join CSV file to shapefile

I wanted to join a CSV file to a shapefile. When I identified a field to facilitate the join, e.g., map <- spChFIDs(map, as.character(map$ID)) it returned Error in spChFIDs(SP, x) : ...
2
votes
2answers
45 views

How do I select Census Block Groups inside a Zip code?

Long time listener, first time caller. I already have my data imported, problem is my SELECT statements aren't yielding the results I'm looking for. I specifically need all the Block Group ...
2
votes
1answer
65 views

Why is “Join Attributes by Location” reporting different CRS (and running forever)

I have a point feature layer with ~240,000 parcel centroids. I have a second feature layer containing ~9000 subdivision polygons. I want to assign the name of the associated subdivision as a new field ...
2
votes
0answers
87 views

(Solved) Near/Spatial Join pick the wrong polyline segment as closest [closed]

I have a set of points near a street centerline. I need to find the perpendicular point on the street centerline, and use their x y instead of the GPS information of the original points. I tried Near ...
2
votes
1answer
919 views

Raster Version of Spatial Join (one to many) [duplicate]

I have two raster layers that are identical in shape (they overlap exactly) and I need to perform the raster equivalent of a Spatial Join (one to many). My files need to stay in raster format ...
2
votes
0answers
134 views

Trouble with polygon to polygon “Join attributes by location”

I have two polygon vector layers - one of census tracts and one of water bodies. I would like to join a particular attribute from the water bodies table to each census tract, with the output being the ...
2
votes
0answers
130 views

Automatic attribution of one layer from another based on spatial relationship?

I have two layers with a 1:many relationship. Working within ArcMap, I'd like to have that relationship somehow formalized so that when I add a new feature to the child layer, it automatically gets ...
2
votes
1answer
201 views

How to join attributes of donut polygon to hole polygon in ArcGIS?

First of all I'm completely new to the realm of GIS and ArcGIS. Basically I need a reliable way to determine a donut hole's containing donut for a few hundred thousand polygons (where the donut holes ...
2
votes
0answers
535 views

Intersect two layers and get resulting features

I have X layers on a map and I need to intersect chosen layers (two per time) and color resulting features. I'm trying to get this code working // get first feature (index 0) ...
2
votes
1answer
51 views

Update Attribute based on spatial location

I want to spatially (Spatial Join) update few fields, not all, from another feature class. Is there any way to select and update few fields instead of all the fields from the other layer and ...
1
vote
3answers
202 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 ...
1
vote
1answer
46 views

Adding attributes to line feature according to adjacent polygon

I'm trying to add attributes to a field in a polylines attribute table according to directly adjacent polygons.... In the pic, the purple line has an empty field labelled 'FG' and I'd like to fill ...
1
vote
1answer
71 views

ArcGIS spatial join - WITHIN A DISTANCE including distance

I am applying a spatial join in ArcGIS between points (target features) and lines (join features). I want to have a 1-to-many join, so I use the match option 'within a distance'. So far so good. The ...
1
vote
1answer
99 views

Counting unique occurrences during Spatial Join?

I have a point shapefile (points.shp) with fields [owner], [name], etc.. [owner] and [name] are both of type string. The owner contains a single string, the unique owner. Name contains a list of ...
1
vote
1answer
50 views

How to maintain Shape_Length field afer Spatial Join of Point to Polyline feature classes?

I need to get for each point the length of the line that joining to the point. How to maintain the "Shape_Length" field of polylines when I'm Spatially Joining point to lines feature classes ? When ...
1
vote
1answer
187 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 ...
1
vote
2answers
193 views

How to Spatial Join centroids of parcels to point data and get the distance

I'm currently using ArcMap 10.1 (basic license). I have a LSOA shape file of Camden borough. From there I added 2 extra fields within the attribute table, X and Y. I then calculated the 2 extra fields ...
1
vote
1answer
198 views

Simple Spatial Join of Point Feature to Polygon Target Feature Not So Simple (Source Files Included)

I have what should be a simple task to perform: join ~47K census blocks from the PL redistricting files with pop and racial data joined to Chicago Public Schools High School boundaries to get an ...
1
vote
1answer
200 views

What's the difference between Spatial Join Tool and Spatial Join Function in ArcGIS?

I am curious to know if anyone can shed some light on the difference between ArcGIS' Spatial Join geoprocessing tool (found in Analysis -> Overlay toolbox) and the Spatial Join 'wizard' (found by ...
1
vote
1answer
128 views

Joining features based on location and attribute at the same time

I have a task of assigning data from database that I represent as point layer, and containing information about characteristics of soils through the world, and also soil type. I also have polygon ...
1
vote
1answer
436 views

spatial join by attribute match from shapefile

i require to spatial join the shapefile having attribute by ie selecting by attribute which remains same for the target and join feature and get the output as per attribute selected i want to prepare ...
1
vote
0answers
54 views

Copy parts from several attribute tables in shapefiles?

I have several shapefiles from which I wish to take parts from their attributes tables to make a new attributes table. Is this possible without destroying the original attributes table? I have ...
1
vote
1answer
47 views

Joining a table with thousands of transactions to one point (location) in Arc Map

I have a large transaction data set in the millions and around a 100 positional points. I need to join the transaction data set to these points. Arc map won't let me join them without errors or if it ...
1
vote
1answer
75 views

Extremely slow processing time to map lat/lon data onto census shapefile with ArcPy?

I am a newcomer to ArcGIS and Python so I would greatly appreciate any and all input on this issue. What I am trying to do is very simple: map 400K business locations using lat/lon coordinates onto a ...
1
vote
0answers
45 views

pyQGIS (Spatial Join): Sum features of attribute from point layer and join with vector layer

I am new to Python and QGIS. I have avoided asking questions up to now. But by now I have developed a reasonable idea of where i want to go so and where I am stuck. So, I have decided to ask but sorry ...
1
vote
1answer
58 views

How to do spatial join which is also based on time using ArcGIS for Desktop?

I have a time series plot of house sales for 4 years, but in those 4 years some districts change. I was wondering if I need to split the data into 4 layers for each year in order to join them to their ...
1
vote
2answers
91 views

Create line between polygon and nearest raster cell

I need to create a line between polygons (centroid) and the nearest cell of a raster dataset. The polygon and raster do not intersect. Each polygon has a UID. One cell can be linked to many polygons, ...