To join the attributes from one spatial data layer to another

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2
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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
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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 ...
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 ...
2
votes
1answer
50 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 ...
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 ...
1
vote
1answer
45 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
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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 ...
0
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1answer
46 views

Join Attributes by Location: .mdb and shapefile in QGIS

I can join attributes by location in QGIS using 2 shapefiles. However, I do not know how to do the join when one of my files is in a .mdb format while the other is a shapefile.
0
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1answer
53 views

How to add point attributes to containing polygon?

I have three layers in a QGIS project: layer 1 is a boundary layer of polygons each with and id I will call "p_id" layer 2 is a point layer each with an id called "p_id" layer 3 is a .csv layer ...
0
votes
1answer
91 views

Qgis Spatial Join: problem with a column!

I run the function "Join attributes by location" in Qgis 2.2 between a point vector layer and a polygon vector layer. When I open the resulting table of contents of point layer there is a column of ...
0
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1answer
46 views

Using attributes of a polygon in one layer to identify polygons in another

So I'm in the process of developing a web application, I am using open source tools so qgis, postgis, play framework for the web app. And I have come across an interesting problem that I'm trying to ...
2
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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
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0answers
534 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) ...
1
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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
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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
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0answers
54 views

Trouble intersecting a polyline and contours (Hack index / stream length gradient index)

Working on creating polylines for measurement using SL index (hack index). So far I have the main trunk of a stream, and contours at 10m. What I am trying to do is a) get the elevation at each ...
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0answers
109 views

Calculate values to represent bus route attribute

I'm working with bus routes and looking for a way to represent some values in this system. I want each street to be represented by thickness based on value returned in SUM or COUNT. I don't have big ...
1
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0answers
93 views

How to display labels from many-to-many relationship in ArcGIS 10 using VB.NET?

I have two tables in a geodatabase: parcel; and person 1 or + parcel, can have 1 or + person (relationship is many-to-many) Using VB.NET I can display all the parcel labelled with the ...
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0answers
90 views

Summing time spent on effort from point GPS data tracks in grid cells

I have one layer of point data representing GPS tracks collected during vessel surveys (an individual survey is indicated as the time between departing and returning to shore and there can be more ...
1
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0answers
323 views

How to transfer the attributes of features based on their spatial relationship?

I'd like to check if a point feature class is placed on a line feature using python in ArcGIS 10.0. I have created a set of point features and placed them directly on a group of line features at ...
0
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0answers
42 views

Needing a python script to spatially join points to line segments with merge rules and a frequency count

I have a data that contains 4 years of fatal crash point incidents. Within the data set there is a field for the "Death Count" and "DWI Related," where death count is the number of deaths resulting ...
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0answers
40 views

Truncate operation not working in ModelBuilder?

I'm having trouble with a model that is supposed to truncate data from the attribute table of a feature class (which is in a file geodatabase not ArcSDE) and then append it with new data. The ...
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0answers
34 views

Consult the charts of a line

I have a table of bus lines and other bus stops in PostGIS. Are conformed to the image below, the lines and the stops on the sides. I want to relate the lines with parades through a spatial query. ...
0
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0answers
62 views

How to create a many to one spatial join?

I have a polygon feature class of territories and a point feature class of trees. The points have many attributes, one of them is the tree species name. I need to get the list of all the tree species ...
0
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0answers
21 views

Joining by location - DIVA-GIS .dbf layer not included

I want to get place names from a .dbf file displayed on my map. I've imported the .dbf file as a vector layer. The gazetteer table does not have any ID fields so I was trying to use the "Join by ...
0
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0answers
56 views

Pyscripter hangs on spatial join?

I've got a script which loops through a series of FC layers (tracker points). Using a FOR loop, they're reprojected then joined to a streets layer. Sometimes it works fine, then other times it never ...
0
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0answers
101 views

trying to make a point to polygon attribute join with a many to many match

I am trying to match US charter schools to noncharter schools in QGIS. I have constructed a buffer of 10 miles around each charter schools and then tried a join attributes by location match with non ...