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

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2
votes
2answers
670 views

Table join with .csv file results in null fields after join

Similar to questions already asked about .dbf files, I'm attempting to join .csv files to a .gdb or shapefile coverage in QGIS. The tables as added to QGIS prior to the join look fine, but after the ...
2
votes
1answer
112 views

CartoDB merge tables (column join) returns import error

I have been trying to merge two tables using the column join in Carto DB. The first table is a table of US counties that contains the polygon geometry and the FIPS id code. The second table contains ...
0
votes
2answers
87 views

Joining two tables in CartoDB mysteriously returns no rows

I have two tables in CartoDB, one with locations and one with related data to those locations. They are related through the common columns "placeid" and "relatedid". Both columns are string, (and ...
0
votes
0answers
181 views

Best way to join and handle multiple attributes related to the same feature

this is not going to be a question, I'm just trying to find some advice. Suppose I have a point shape file (for example just 2 point, actually I have many more points) representing water control ...
1
vote
2answers
934 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 ...
2
votes
1answer
55 views

Can ArcGIS make a join with selected attributes being added into the outcome?

My question is when making a spatial join, is it possible to only assign selected attributes of source layer to the target layer instead of getting all attributes from source layer? I'm asking is ...
2
votes
0answers
138 views

Joining nearest neighbor small polygons using R

The figure shows a plot of numerous polygons (zoom in) made from a raster file by require(sp) require(raster) pol100 <- rasterToPolygons(r, fun=function(x){x==1}, dissolve=FALSE) There polygon ...
1
vote
1answer
176 views

Join Tables related by a composite primary key in qgis

I have two tables, one has the geometry and other has attributes. The table with geometry has unique number primary key, and 4 columns admin1,admin2,admin3,featureid. Table two is a csv file has the ...
4
votes
1answer
916 views

How to Calculate Field in joined table using ArcPy?

I have to calculate a field based on another field in a joined table, but an error occurs: "Parameters are not valid. ERROR 000728: Field !Table_A.field_A! does not exist within table" My code: ...
3
votes
0answers
90 views

tablejoin in qgis 2.x adds name of table to columnheader attributetable [duplicate]

When joining a table to a shapefile through 'layer properties > joins' the columnheader of the attributetable shows the name of the file you joined. eg.: the name of the table is: STAVAZA3 the table ...
1
vote
0answers
72 views

How to repair a data source with joins to Excel?

I have a set of MXD files, that do not use relative paths, and related data that have been copied to a new computer. Normally it's not a big problem to repair the data sources in the project, but in ...
2
votes
1answer
651 views

keep the same field headers after joining a table to a shape file in QGIS

I noticed that after joining a table to a shape file the headers of each fields in the table used for the join are changed by QGIS and they are attributed to a different name. For instance, i had a ...
0
votes
1answer
82 views

Using JOIN TOOL in ModelBuilder

I want to perform JOIN TOOL for all DBFs generated from ZONAL STATISTICS AS TABLE into one table. However, it seems that DBF has a maximum of 255 fields while my dataset has more than 500 ...
0
votes
2answers
405 views

Problem with adding new field to attribute table after performing join by attributes

I am studying ArcMap 10.2 and concentrates on different join operations. I am working on a Personal Geodatabase. I have digitized some polygons from a raster representing houses and have created a ...
6
votes
1answer
88 views

Is there maximum number of .DBFs that can be joined using ModelBuilder?

Is there a maximum number of .DBFs that can be joined using the Join Tool in ModelBuilder? I tried joining 480 .DBFs but results generated only 250 fields in the input table. Is this a glitch? I am ...
1
vote
4answers
339 views

Joining shapefile table with csv

So I am having a shapefile with all the world countries. And the table for this shapefile has a column named "Country Name". Each of this entry is unique, meaning, each country takes only 1 row, and ...
0
votes
2answers
244 views

How to permanently join MDB database (access) table with spatial data in ArcGIS for Desktop?

I have an Access file (*.mdb), and I want to join between this attribute data with its spatial data ? But other than (join & relate way) . And I need it to be permanent .
4
votes
1answer
159 views

QGIS 2.0.1 linking table issue, MSSQL 2008 database

I'm trying to link tables in QGIS 2.0.1 and MSSQL 2008 database. I can link them but when I try to open the attribute table QGIS throws an error and shuts down creating a *.dmp file. I saw that ...
1
vote
0answers
64 views

Joining Data in ArcMap Errors

Has anybody encountered issues with ArcMap when joining data? Specifically, my rows join, however, depending on how ArcMap is feeling, I might or might not receive my data in the form of quantities. ...
4
votes
1answer
294 views

How to join data from NHGIS to make choropleth maps in R/ggplot2?

I have downloaded shapefiles of county/state boundaries and census data keyed to those shapefiles from the NHGIS. Both the shapefiles and the census data have a GISJOIN column to be used for merging ...
1
vote
3answers
525 views

Join excel attributes to shape attribute

I am wondering if there is a way to join the attributes from excel tables to shapes in Qgis. I have abbreviations in the shape and want to add the associated complete names from excel file by ...
0
votes
1answer
1k views

Problem adding a join to a table via Python using addJoin_management

I am currently building a script for a script tool that will join data from a multitude of tables into a single table based on a common join field. Now, I have attempted to use ...
1
vote
1answer
781 views

MapInfo: How to get the population contained within 2 geographical tables

I using 3 different tables which are also geographical objects: population data; points on the map representing inhabitants (1 or more) region data; the map is divided in regions coverage data; it ...
0
votes
1answer
66 views

AddJoin_management crashes ArcMap

I am going to be using an AddJoin_management command in a python script at the end of several loops. To test, I used the AddJoin tool and use the below command in the Python window and made the ...
3
votes
1answer
116 views

Join is deleting fields in arcpy

I'm working on a script to automate the conversion of CAD .dwgs of rooms to feature classes, I'm nearing completion and am now working on the second portion of the script (I've seperated it into two ...
5
votes
1answer
2k views

Creating a spatial “Many to one” join

I'm trying to create what I call a "many to one" join. I don't know if that would be the correct term or not. I have a table that has unique account numbers for mobile homes (i.e. - M1007970) per ...
1
vote
4answers
97 views

Add only unique features from another shapefile

I've got a problem that I am sure at least one of you have dealt with. I'm new to a company that makes use of a rather large database of point data. For whatever reason, the woman who was here before ...
2
votes
1answer
272 views

Joining Multiple Features to One Feature

I have two layers - an index layer (polygon) and a town boundary layer (polygon). The desired output is a FC with each town represented as only one feature and that FC's table having a field with ...
2
votes
0answers
108 views

QGIS - How to avoid -2147483648 value from imported CSV?

I am attempting to join a spreadsheet containing all the CIA Factbook Country Comparison Data (many columns) to the existing Natural Earth world countries shapefile. I followd the tutorial here, but ...
2
votes
0answers
255 views

PyQGIS joining a dbf to a shapefile

I am trying to join a shp and dbf file using the PyQGIS API. The code I'll use is below: from PyQt4.QtCore import * vector1 = QgsVectorLayer("path to dbf file", "test1", "ogr") id1 = vector1.id() ...
7
votes
5answers
597 views

How to programatically identify the “Joined Field” in ArcMap?

Is it possible to programmatically identify the Join Field that is being used to Table Join two datasets together in ArcMap? I am currently using ArcGIS 10.0, SP5 and would prefer an ArcPy solution, ...
0
votes
1answer
70 views

Why is ArcGIS for Desktop not joining records when values have dot (.) in text string?

ArcGIS is not joining records from a table that have a dot (.) in the text string. Has anyone else come across this problem? Is it a known issue?
2
votes
2answers
310 views

ArcMap | Perform full outer join

Hey there, does anybody know how to perform a full outer join with ArcMap? Just to describe the problem a little bit more, lets say I got the following two tables: Table A Joinkey 1 2 3 Table B ...
2
votes
1answer
68 views

After joining data from csv file to shapefile, why are all values zero in categorized renderer?

I have joined data from a csv file to my shapefile. The attribute table shows a successful join. I have converted the variable of interest to INTEGER. But when I go through Style to categorize the ...
2
votes
0answers
973 views

QGIS: 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 ...
3
votes
1answer
2k 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 ...
1
vote
1answer
2k views

Join Fields from Multiple Tables to One Table in Modelbuilder

I have 40 tables with about 2000 row with a shared ID that I want to merge into 1 table with 2000 rows. I only want to retain a distance field calculated within each table. The distance field is ...
2
votes
0answers
72 views

How to join two fields after calculating?

I have been working with two layers and I am trying to join them and turn them into a raster data. The first layer is a watershed layer which I have assigned each shed a location from the center point ...
2
votes
1answer
212 views

QGIS join data not transferring

I'm reanalyzing data from a VA Late Woodland Palisaded Village. The site is mapped in CAD and exported as a shapefile. QGIS brings up the 1059 features as polygons. I am using a CSV file for the ...
0
votes
1answer
2k views

Merge attribute of points into a polygon : Arcmap 10

I have points layer which the attribute looks like this: FID Shape ID Lat Long 0 Point 2065 -5.51666 106.48333 1 Point 2319 21.93333 120.73366 I also have polygons layer : FID Shape ...
2
votes
2answers
531 views

Why does ArcMap crash if I try this Join Field (which ArcPy does not like either)?

I'm a little uncertain whether this question belongs here or on http://gis.stackexchange.com Have an "AddJoin" that results in no shared records, which is not what I'm expecting. Is it because I'm ...
3
votes
1answer
690 views

Joining table to shapefile with pyQGIS

Joining shapefiles is a relatively straightforward proess in QGIS using 'add vector join' in the layer properties menu. I can add a csv file as a vector layer, as well as a shapefile, and join the two ...
2
votes
1answer
816 views

Joining Excel with arcmap by model builder

I am trying to use the model builder tool in ArcMap 10. I would like to join an Excel file (xls) with a shp.file. The Excel file and the shapefile have one identical column with data but the ...
1
vote
0answers
230 views

Quering a ArcSDE featureclass attribute table after joining

I am trying to query a ArcSDE Feature Class after joining using Iqueryfilter I have two SDE feature classes. 1) Subdivisions : which has details of subdivision and districts (parent) 2) ...
1
vote
0answers
113 views

Join .csv file and .shp of georeferenced points

I have georeferenced a map and saved a selection of some points on the map. These points are cities of departure and arrival and I want to join the .shp with a and excel .csv with the information of ...
6
votes
2answers
189 views

How to enumerate join values with ArcGIS?

I have two shape files (e.g. postal code areas and cities) which I want to join based on an id that both shape files have in common (the id would be the city name in this example). Joining the two ...
2
votes
1answer
115 views

Join attributes by date in Qgis

I learned (thanks!) to use the join feature built into the layer properties, but in my case it doesn't work because data do not match perfectly. Infact shape refers to geotagged photos, csv is a log ...
1
vote
2answers
645 views

SearchCursor (arcpy.da), accessing data on joined tables

Can you access joined tables through a da.SearchCursor? I've found documentation to do this with SearchCursor (arcpy), but nothing for the 10.1 data access module.
2
votes
1answer
2k views

Why can't I use a Join in a model?

I'm trying to build a model using Model Builder in ArcGIS 10.1 that starts off by joining two shapefiles together based on a common field. I would like to make this open ended (not hardcoded) so I can ...
0
votes
0answers
39 views

multiple data atach with shape file in GIS-regarding

I have different sampling data of one location that is a point so, multiple data how to join with single point. after joining i need quries by select attribute in GIS.