The process of connecting two or more datasets based on a common attribute or spatial location.

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0
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33 views

Add Join issue with ModelBuilder?

I am trying to do a simple Add Join within ModelBuilder but it keeps throwing the 99999 error. What is going wrong? I have even tried to create a Table View for the table I am joining to a feature ...
0
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0answers
66 views

Multiple join of Access data with ArcGIS shapefile

I am looking for a solution for joining constantly modificated data to my shapefile. The shapefile consists of polygons. Each one has a code. In the Access database, I have varias colums for one code ...
1
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1answer
30 views

In QGIS is there a way to select one feature from a layer and only see related features from another layer

I am self taught. I have 3 layers on my map: Retailer, Producer and Processor. Each business in each of these categories has a unique identifier, their license number. I have a CSV file with a list ...
18
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4answers
8k views

Joining attributes from nearest point in QGIS?

I have two layers with points, call them A and B, each with different attributes. For each point in A I want to join all the attributes from the nearest point in B. Ideally this would also include ...
3
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1answer
251 views

Startup python script to re-join layers in QGIS?

In QGIS 2.2, there is a bug which involves using the JOINS properties on a vector layer (that is already being joined with several other vector layers) whereby the attributes are not fully loaded. ...
2
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1answer
56 views

QGIS Attribute update using excel

I am looking to update the Attribute table for a Layer in QGIS using a join. However I am not looking to ADD attributes to the table (thereby adding extra columns) rather I would like to "Update" ...
1
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0answers
1k views

arcpy spatial join input parameter problems [closed]

Using ArcGIS 10 SP4 with all extensions... I have a parent directory (J:\...\spatialjoin) containing two sub-directories of feature classes I want to spatially join. Directory 1 (target features) ...
1
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1answer
273 views

Can Virtual Fields be used for a rendering style?

In QGIS 2.6, creating a virtual field for a layer and adding up 2 integer fields work fine. I get the correct results and I can use that field for styling. However, when doing a Joins with 2 layers ...
1
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1answer
38 views

Joined attributes not available in Feature Service

I have a joined feature class (PROPERTY) and table (OG_LEASE). When I publish this as part of a map service and feature service, attributes are only available in the map service. Map service fields: ...
1
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0answers
28 views

Command line join attributes by location using OGR

I have two overlapping vector files (polygons and sample) and want to do a spatial join from the command line to extract all features in polygons that intersect with sample. Essentially I want to have ...
2
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3answers
380 views

QGIS joins 2 FIELDS

I have an excel with 4 columns (Region; District; village; number of cases) Have a shapefile with dots for villages with many columns including (Region ; District ;Village) I want to plot the cases ...
2
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1answer
2k views

After performing a table join, all the fields are “NULL”

Within QGIS, I joined .dbf table containing population data to a shapefile of Census tracts. The join field is called GISJOIN in both the target table and the shapefile's table, and this attribute ...
1
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1answer
55 views

Joining multiple polygons inside a single polygon in QGIS

I need to somehow "join" information from two shape files: zoning - these are large polygons indicating the zoning code for a moderately large area, typically hundreds of separately owned parcels (...
1
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0answers
19 views

Expression Within ModelBuilder?

In ArcMap I add 2 tables, join on a field then run an attribute query to return any of the joined tables records that are not null in a particular field - all works OK. I would like to build this ...
2
votes
1answer
94 views

How to join and display .shp lines with values in .dbf

I've got a shapefile lines with ID attribute and .dbf with values which corresponds do ID. Every value in dbf is in different record. I want to style lines and display label using these values from ...
4
votes
3answers
82 views

How to Make Two Attributes Display Simultaneously on one Shape File

I am trying to make a map that displays both an incidence rate of a type of cancer and also display at the same time a percent of the population per state that has a certain vaccination. I've added ...
2
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5answers
262 views

Create Statewide Hydrologic Soil Group Map

This may be better for Engineering? Not sure. Background: Previously I have downloaded SSURGO soil data for the state of Pennsylvania by downloading each county and merging the shapefiles. I then ...
2
votes
2answers
45 views

How can I handle NULL values in a color ramp? [duplicate]

I'm mapping areas in QGIS 2.12 based on average pricing, using area polygons (PostGIS) joined with a CSV data table that doesn't have values for areas that didn't have any sales. I'd like to color ...
6
votes
2answers
908 views

How to symbolize features with NULL values in graduated symbology?

I have a polygon feature dataset, and an attribute from a different table that I join (one-to-one) within QGIS in order to symbolise the attributes as a choropleth map. However, not all polygon fields ...
1
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0answers
32 views

How to avoid field duplication when joining two vector layers?

I have 2 point vector layers wich differ in 2 fields while both of them have the same number of fields (10). What I want to do is produce a new point vector layer with 12 fields. When I join the two ...
3
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2answers
43 views

replace records in layer with records form another layer by id and column name QGIS

I have a two polyline layers - one with 2800 rows, the other with 150 rows. Each row has a unique id column. I need to replace the records in one column of the the 2800-row layer with the records ...
3
votes
1answer
898 views

query / filter on attribute tables with external tables joined

i tried to do some queries on joiend table fields ... i've got/found some answers concerning version 1.8 - which result in "use select + export to create a combined dataset" so i just did some tests ...
1
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0answers
46 views

Polygons get lost when doing Join attributes by location

I am trying to do the operation "Join attributes by location" in QGIS. I have a point layer and a few polygon layers, all of them in shapefile format. I want to sum the values of the attributes of the ...
1
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0answers
21 views

“undo” pivot table with ArcGIS ModelBuilder?

I have a table in a geodatabase with an ID and a text field for each day of a week. The text fields contains 0 or 1 for monday, 0 or 2 for tuesday, and so on. One ID can have multiple day entries, so ...
1
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1answer
21 views

QGIS - Have spreadsheet with col from 0% to 100% plus null want 100 bin gradient plus one more for null

Newbie alert. Have a spreadsheet with no geo; has a col with values in there from 0% to 100%, plus several blanks/nulls. Ideally would like a 100 step (bin) gradient fill from 0 (100% black) to 100 (...
1
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1answer
26 views

QGIS Way to join based on different length keys fields?

In QGIS is there a way to join a .shp file to a table when the keys are different length (by ignoring part of one set of keys?) For example .shp file key col like this 1500000US120730002001 ...
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0answers
17 views

QGIS .shp joined to xlsx.vrt; Classify works, Rule-based does not

Very simple set up. Tiger .shp file as a layer. Has a join to an xlsx non geo attribute table as a .vrt .shp has join on MTFCC to MTFCC in xlsx.vrt. xlsx.vrt, has a string field with a brief label ...
0
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3answers
58 views

How to add two dataframe columns of city and state names to form single city-state column for geocoding in R? [closed]

I tried to search for an answer to this, but I couldn't seem to find the right search terms, so I decided to spell it out quite explicitly. I have a data frame with separate columns for cities, ...
1
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1answer
1k views

Linking SharePoint database with ArcGIS?

The organization I am working for has a sharepoint database that multiple people update every time they do an inspection of natural resources on a parcel in the county. This database has the ...
4
votes
2answers
171 views

One-to-many joins on a feature class to a table

I am using ArcMap 10.2.2 with an Advanced license. I have used ArcMap for other basic analyses, but am fairly new to the program and have only basic coding skills, with no SQL experience outside of ...
6
votes
1answer
202 views

Joining Google Docs table to feature class at ArcGIS Online to use in Operations Dashboard?

I am using ArcGIS operation Dashboard. I get the Data Source from excel file that i have published using google docs as a dynamically data source. I need to join the excel table to hosted feature ...
2
votes
3answers
2k views

Spatial join versus classical join

What are the main differences between a spatial join and a classical database join such as an equi (inner) join?
6
votes
2answers
443 views

How to join a table to a shapefile with non-matching IDs and names (similar strings)?

I'm having an annoying problem that I'm trying to find an automated solution for. The shorthand version is that I have a shapefile and a table of created data for regions within countries. The created ...
2
votes
1answer
69 views

Problems with one-to-many join ArcGIS

I need to display polygons as different colors based on a value in a separate data table that I've imported from Excel. The polygon attribute table and data table both have a field with the polygon ID#...
5
votes
1answer
259 views

Reading an Existing Join

Confused again. I was finally able to run ArcCatalog and create a join in my map document (I will do the deed programmatically eventually) but I was interested in how a join looked once it was ...
0
votes
0answers
17 views

One to Many link that can be queried

I'm at my wits end, having looked through a number of posts and tried several options. At this point I'm just looking for confirmation that I cannot do what I am trying to do without ArcGIS or using a ...
3
votes
0answers
20 views

Listing Joined tables in MXD using Python? [duplicate]

I've a question about arcpy List* modules. I have a quite large amount of data on ArcSDE Server. Earlier I made a list of the feature classes, and tables in the mxd-s placed there using da.Walk ...
1
vote
1answer
40 views

Join field in modelbuilder wont work, but will manually

I'm trying to do a 'join field' in a model. When I do the join simply not in a model, no problem. When I try to use the 'join field tool' in a model, I get the "" does not have OIDs. I have a very ...
0
votes
1answer
95 views

How do you filter a layer on a joined table in QGIS?

I am attempting to do a join in QGIS between a SQL Server Spatial table and a non-spatial table (on a single integer field). I was able to add both successfully and make the join, but the query ...
4
votes
1answer
164 views

How to automate joining SQL Server non-spatial database tables to ArcGIS shapefile

I have dozens of SQL Server non-spatial database tables. These are common tables, the column types are: nvarchar, int and float. I try to use Arcpy to automate joining these database tables to ...
0
votes
1answer
36 views

Auto-selecting records in all spatial and non-spatial joined/related tables by selecting only “parent” spatial record in ArcGIS for Desktop?

(1) I have a layer of pipes with related spatial and non-spatial data linked via joins and relates. Is there a way of selecting the top/parent record and then having ArcGIS auto-select all related ...
2
votes
2answers
4k views

Fastest way to Join tables in python automation

My issue comes form the fact that doing Joins manually is actually relatively quick (5mins), but python automation of this process is 6hrs! Here is my code: import arcpy GDB_MARK_TO_MARK_VECTOR_VIEW ...
0
votes
1answer
60 views

How to export joined feature classes without losing field name?

I want to export a feature class uisng arcpy that join with other feature class.I use the below code to join and export feature class. The problem is that field names of the result feature class have ...
6
votes
2answers
1k views

Creating polygons from one to many relationship of points using QGIS or PostGIS?

I have a set of polygons that are in a one to many relationship with points. The polygons are administrative boundaries and the points have information on companies and percentage of ownership . I ...
0
votes
1answer
43 views

arcpy: I would like to join a .xls table to a .shp table using two common fields

arcpy: I would like to join a .xls table to a .shp table using two common fields, instead of one common field. Is this possible in ArcGIS using python?
1
vote
1answer
50 views

Joining two datasets based on matching values in multiple fields

I am trying to find a way to join CSV data to a vector layer only when they both share matching values in multiple fields, rather than just one field. This is a problem I'm running into with multiple ...
7
votes
1answer
10k views

Joining polygons in R

I am wondering how to join spatial polygons using R code? I'm working with census data where certain areas change over time and I wish to join the polygons and the corresponding data and simply ...
0
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0answers
35 views

Preserving Reclassified Values as Attributes?

What is the BEST way to preserve original raster values as attributes in the output raster when reclassifying? I see that this question has been asked before as Making reclassified raster layers ...
1
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0answers
137 views

Add join works, join field doesn't

My input join field and output join field are text type, and my problem is that when I use "Add Join" all joins ok, but if I want to use "Join field" there are some records with Null, it seems like it ...
0
votes
0answers
63 views

Convert raster to polygon then join attributes

I'm trying to convert IMG files to shapefiles, then joining the attributes of the IMG file to the new shapefile. I got the conversion part to work, but am a stuck on how to join the tables. I have ...