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

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12 views

QGIS Categorized Symbology based on joined table

I am trying to create categorized symbology for a data layer. The column that I would like to base the categories on is a result of a table join. For some reason it isn't working. All of my polygons ...
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27 views

How do I join multiple features with a single geometry-less table entry?

I have three features with the same ID, let's say "5". I also have a corresponding text table containing IDs among other info (for example a "category" value). I want to join the table with the ...
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1answer
13 views

Update the_geom field with polygons from a different table using one common field

Using CartoDB SQL API I'd like to: Update the_geom field in a table that has no spatial data by selecting the polygons from a table with spatial data and joining based on one common field.. In this ...
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0answers
13 views

How to specify which fields to join to another feature in the QGIS Graphical Modeler

I wish to join one field from a shapefile to another shapefile within the graphical modeler. I am aware that there is a 'Join attributes table' algorithm but this joins all of the fields from the ...
2
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2answers
49 views

PostgreSQL/PostGIS Geom to JSON with Inner Join to another table

I am currently producing JSON from a database successfully using the following query: SELECT row_to_json(fc) FROM ( SELECT 'FeatureCollection' As type, array_to_json(array_agg(f)) As features FROM ...
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0answers
12 views

How to find soil names for “mukey” in USDA Soil Data SSURGO

I an trying to join the soil descriptions in the tabular data to the spatial data in ArcGIS. I have both the mukey and musym in the attribute table associated with my soil polygon layer in my map. ...
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1answer
29 views

Point inside st_dwithin with wrong results

I want to get all points, that are in the same area. Therefore, I have the following query for my table check: SELECT l.location_id, l.location FROM check l INNER JOIN check l2 ON ST_DWithin ...
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1answer
32 views

Joining Information from Point and Polygon

I tried to find the answer to this question by searching, but I was not too successful. My issue is that I have a point file of around 400 Organizations that do not have a column of county names tied ...
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3answers
67 views

Field Join by Approximate Data in ArcMap?

I've run into a bit of an issue. I recently pulled data from the CDC website concerning Suicide rates by county. However, the csv file does not have locational data. Luckily, my project is about the ...
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0answers
21 views

How to show an overview of all Joins and Relations in ArcMap Project?

Is it possible to get an overview of all Joins and Relations between my Tables and Files in ArcMap 10.1? Right now I have to right-click on every file to see how it is connected to another file. It ...
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2answers
68 views

can't join excel(2013) to ARCGIS 10.2.2

When trying to join Excel datafile to shapefile in ARC GIS 10.2.2 I keep getting the following message: "Failed to connect to database. An underlying database error occurred. Class not registerd." ...
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2answers
35 views

Performing batch Join Field in ModelBuilder?

I have a list of 250 feature classes (X1, X2 X3, ...) which all have an individual field that I want to join to another feature class Y. The join can be established through a common field that are ...
3
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1answer
27 views

Joined tables and now field calulator is greyed out

In ArcMap (10.2), I accidentally calculated the wrong field outside of an edit session, so there was no way to reverse my action. I restored a previous version (shadow copy) and joined the tables ...
1
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1answer
27 views

Can I join a table with a field with several rows with the same word to a polygon?

I have a table that looks like: Name X X X Y Y Z Z I have a polygon feature class with the attributes: Place X Y Z Essentially, I want to join that table to the polygon, but I want each row in ...
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0answers
30 views

Joining to data in ArcGIS Online

I'm a GIS professional. One of my clients (an ArcMap user) has asked our firm to teach some of his staff about ArcGIS online. In so doing, we are to provide an overview of GIS-- how to think ...
3
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2answers
73 views

Join table field with shapefile programatically (via PyQgis)?

The following is currently unsuccessful at fulfilling a table field join to a point shapefile in Qgis. All instances of the join object will print the proper values, and no error is flagged when ...
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1answer
49 views

Creating many-to-many table from intersection between two polygon layers in QGIS?

I have created a buffer around several points. I want to intersect this layer with a Census Tract layer. My end goal is to create a table that would list all the census tracts that intersect with the ...
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1answer
18 views

How to join multiple lines (branches of a large stream network)

I've generated a channel/stream network based on a DEM, but each branch of the network is split into very small lines. I'd like to have the network divided into as few separate lines as possible, so ...
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0answers
23 views

Saving fields after a raster join with python arcgis

I am working on a raster processing script in which i join a categorical raster with a table that includes some extra data on each category. After much hassle, I have the join working, but I can't ...
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1answer
28 views

Joining dBase (*.dbf) table to Coverage?

I have a dbf table and a polygon coverage. How do I join and save the joined data to the coverage without exporting to feature class and then re-creating a coverage in python? I have been looking at ...
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1answer
22 views

Returning list of field names in joined table using ArcPy?

I need to look at all the fields in a joined table performed through arcpy. I am instigating for fields in arcpy.Listfields(Feature): print fields but it is returning a large list of: ...
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2answers
57 views

How can I release the lock file on a DBF after removing its join to a FeatureLayer using ArcObjects?

I found another post with two different answers on how to remove the join between a feature layer and a standalone table, but neither method successfully removes the lock file ...
2
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1answer
47 views

The best practice to join\relate\connect 4 feature class together

What is the The best practice to join\relate\connect communities\UMP\BuiltUP\Admin boundaries, Could you please consider the following scenario: I have a feature class with a name “community “ ...
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1answer
40 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 ...
3
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1answer
76 views

Using ArcPy to Remove Join?

I am trying to remove a join in arcpy and have been all over the forums and help topics but cannot get my script to remove the join. I have tried many combinations of inputs to the remove join but to ...
2
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0answers
12 views

QGis - WFS and joins

I'm trying to figure out whether it's just me, or if I'm forgetting a setting. I have a shapefile which I make available for WFS-requests. Now I added a join (to a MySQL table). I tried playing ...
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0answers
22 views

How to use calculatefield_management with ArcPy and joined second table? [duplicate]

How can I use calculatefield_management with ArcPy if I have a joined second table? I want to go through the attached table's field and I want to get records where the certain fields is. How can I ...
2
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1answer
41 views

Difference between: join, merge and group

Suppose it is desired to make polygons A and B, and their respective attributes to be one unique polygon C. What is this GIS operation called? Is there any difference in GIS terminology about ...
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1answer
25 views

How to remove LayerName.FieldName join format in model builder?

I am running a join in model builder based on a calculated field in a geodatabase table and a created layer. After the join I am selecting features and copying selection to a new Shapefile. My ...
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1answer
40 views

How do you calculate a new field for a raster table based on value from a joined table?

I need to know whether it is possible to calculate a new field for a raster table based on a value from a joined table. Ideally I'd like to be able to accomplish this task without having to add table ...
0
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2answers
27 views

Why won't my csv file imported as a vector layer have attribute table headers?

I have a .csv file that has unique identifiers that I'd like to join with some legislative district shapefiles in QGIS. I've done this before, and the joins all worked fine -- and technically it still ...
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0answers
15 views

ArcGIS Route Analysis

I have a pipe network that is a imported CAD file converted to lines showing complete runs of pipe in a system. I also have a Access database imported to ArcGIS set up as a relate to my Pipe line ...
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0answers
15 views

Join a table to a pre-joined field in QGIS

I'm trying to join a .csv (X) to a .shp layer (Y), but X and Y don't share an ID field. Another .csv, Z, has TWO ID fields--one shared with X and one shared with Y. In any other language, I'd first ...
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0answers
10 views

Editing the configuration of a join in QGIS

Is there any way to edit the conditions of an existing join in QGIS? I have a .csv joined to a (polygon) .shp layer; because I only needed a few fields from the .csv, I only joined those I needed. ...
0
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0answers
27 views

Modelbuilder Join

Trying to do an iterate with a join to a table to create a new feature class. The output has the spatial data but with none of the fields of the join making it. I think that I have the problem ...
0
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0answers
11 views

Appending data from relate into single attribute table row using ArcGIS for Desktop?

I have a featureclass of cities and a separate table of city administrators and related contact info. What I need to do is consolidate all city administrator info into the attribute table of the ...
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0answers
53 views

Fastest method to join a lot of tables

i have a lot of feature class (see figure 1) the objective is to create one feature class that combines the attribute table (especially one field) of each feature class the attribute table of each ...
2
votes
1answer
65 views

Symbolising null features 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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1answer
52 views

SQL-Like Inner Join on IDs in Two Layers in QGIS

Using QGIS v2.6.0-Brighton. This question is not about editing layers geographically in anyway. It is merely trying to find data from two layers as you would in an SQL Query and append an extra ID to ...
2
votes
1answer
55 views

Spatial and Non Spatial join

I have a shapefile with a number of weed control blocks as polygons. They each have a unique block id number. I am trying to join a non spatial csv file which has multiple entries for each block over ...
0
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1answer
65 views

Join and Field Calculator

I made a Join between a shape and a dbf, and now I want to calculate some data from the table that came as a result from that Join. Everytime I try to run the Field Calculator it says there's an ...
0
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1answer
49 views

How can I join a buffer layer to the layer it was created from?

I have two relevant layers for this problem: Real estate parcels (point data) Multiple ring buffer layer - contains multiple buffer rings around each particular real estate parcel. (0.5, 1, 1.5, ...
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5answers
154 views

Selectively removing whitespace from a string with SQL

I have two columns of adresses that I need to join. Column 1 has the adresses formatted as "Some Street 12 A" while column 2 has them formatted as "Some Street 12A." Ie. the last whitespace between ...
0
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1answer
42 views

Selected features with a join are identified improperly from a service

We couldn’t figure out why a service fails to provide correct identification for the selected feature. However, the scenarios below may highlight the issue: In the “UrbanMasterPlans_WithJoin.mxd” ...
1
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1answer
23 views

add points when joining two datasets together in ArcGIS

I am trying to join an excel file with a shapefile based on a zipcode. My problem is that I have multiple persons with the same zip code, but it joins only 1 of those persons. Is it possible to ...
0
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0answers
8 views

add points when joining two datasets together in ArcGIS

I am trying to join an excel file with a shapefile based on a zipcode. My problem is that I have multiple persons with the same zip code, but it joins only 1 of those persons. Is it possible to ...
2
votes
1answer
79 views

Join line to multiple points

I took some ASCII files and created points with attributes. I am trying to join the line features to these but a simple join function will only take the one that is closest. Is there a way to perhaps ...
0
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4answers
77 views

How can I join all data of two raster datasets in ArcMap 10.2?

I have two raster datasets in ArcMap10.2. One is displaying rails and one that is displaying a 100m Buffer to both sides of it. My cellsize is 100x100m. What I want is to combine the rails AND the ...
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2answers
29 views

Making data joined from Excel independent in ArcMap? [duplicate]

I have joined some data from Excel (.csv) "text" to my attributes table of one feature class. However I can't edit it. I found out it is still connected to Excel file from where I added it, and I need ...
2
votes
1answer
92 views

ArcMap many-to-many join

I'm working in ArcMap 10 and can move around in R, though am not an expert. I have a shp file and an xlsx file. The shp file is 20,221 rows and includes a field GID (grid ID) which is not unique ...