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

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2answers
2k views

Creating non-spatial Many to One Joins/Relationships between tables

I may have missed a trick here but I can't seem to find a solution. I have a table of ~1.6 million postcodes, also containing co-ordinates, and a separate file detailing ~6000 a population with ...
4
votes
1answer
141 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 ...
3
votes
1answer
52 views

Coloring of features in ArcMap 10.1 changes randomly while zooming

I am using the sovereign states shapefile (ne_110m_admin_0_countries.zip) from http://www.naturalearthdata.com/ and joined the attributes with a spreadsheet file that codes many (but not all) country ...
2
votes
1answer
78 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 ...
1
vote
1answer
45 views

Problem with QGIS 2.2 joins between shp and csv

Didn't see question like this asked, so... I've joined csv to shp file and everythings seems ok. I've modified attribute form so that fields from joined csv appears in there. So far so good- it's ...
0
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1answer
86 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 ...
0
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1answer
186 views

Join and Calculate vb.net

Im trying to join an excel table to a shapefile and then calculating those fields using vb.net. The code I have written has no errors, but won't work when I try it in ArcGIS 10.1 and I'm out of ideas. ...
3
votes
0answers
29 views

Can you use wildcards for column headers in Field Calculator?

I know you can use wildcards for fields as shown in the example below (done in the Field Calculator): case when "column" ILIKE '%example%' then 1 else 0 end Can you do something similar for the ...
3
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0answers
12 views

List Joined tables

I've a question about arcpy List* modules. I have a quite large amount of data on SDE Server. Earlier I made a list of the feature classes , and tables in the mxd-s placed there using da.Walk and ...
3
votes
0answers
42 views

Adjacent DEM files have narrow triangular gaps when joined

Newbie here. I've downloaded several DEM files from GeoCommunity which correspond to adjacent regions. When I join them together to form a larger relief map there are triangular 'gaps' on all four ...
3
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0answers
693 views

How to join data from a CSV to a shapefile using QGIS

I'm new to GIS and new to StackedExchange. I need help joining a CSV of Accessibility data to a LSOA shapefile in QGIS. The process explained here does not work for me and I don't know why. The ...
2
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0answers
116 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 ...
2
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0answers
94 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
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0answers
745 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 ...
2
votes
0answers
66 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
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0answers
270 views

ArcObjects : How to change layers connection properties without losing joins

I'm using arcObjects 9.2.6 java librairies to change connection/path properties within a java prog. This prog aims to change path and connection properties for all layers of an mxd file. It works well ...
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0answers
27 views

Is the bug from doing multiple JOINS fixed in QGIS 2.4?

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. ...
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0answers
30 views

Join does not return matching records after 1001 records have been successfully joined

I'm working on a process that joins a feature layer to another feature class. The code is as follows: arcpy.MakeFeatureLayer_management ("New_FC", "newFC_layer") ...
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0answers
34 views

Categorized style hiding map

I am having an issue with the style properties of my map. I imported the US Zip Code Tabulation Area map from a government website, and in a separate excel file I have a list of people connected to ...
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0answers
22 views

Join operation does not return any matching records if the join table contains “coded value domains”

I have a point feature class and performed a join operation against a destination table with two fields containing coded value domains defined in the same file geodatabase. Another field called ...
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0answers
39 views

Create a non spatial index on an attribute in QGIS before joining two layers

I’m using QGIS 2.0.1 on Windows 7. I’m trying to join a .dbf which contains no spatial data to a shape file containing spatial data. Ideally I’d like to create an attribute index on the join field in ...
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0answers
44 views

How to create a 1:n join and concatenate text attributes?

I have 2 polygon layers A and B. I would like to join the attributes from B into A for all the polygons from B that intersect A and for text attributes, i would like them concatenate. But apparently ...
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0answers
48 views

Record Set (Recordset) for Join in ModelBuilder

I am trying to use a recordset to develop a Table View to use to join to a feature layer in model builder. I can export the table view directly with the user input included. However, when I attempt to ...
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0answers
50 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 ...
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0answers
52 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. ...
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0answers
176 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) ...
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0answers
97 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 ...
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0answers
70 views

Join field from table to a raster layer

I'm trying to join a field in a table to a raster layer. I'm using the tool 'Join Field'. The table is in a excel sheet, but have been imported to a file geodatabase. The table has an ObjectID field ...
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0answers
270 views

In ArcGis 10, spatial join of a hot street value to a fishnet cell is counting multiple values for same street segment

So, I am working on a fishnet, so that we can attribute multiple values to points within different cells (i.e., ranking light poles as optimum for traffic cameras based on the number of speeding ...
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0answers
380 views

Should Delete Field work in ModelBuilder while there is a Join present that appears unrelated?

I am having an issue with a very simple Model, both in ArcGIS 9.3 and ArcGIS 10.0. The part of the Model that is causing trouble is shown below, along with ModelBuilder's error message (in ArcGIS ...
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0answers
18 views

how to join 1second GPS data with dGPS using much shorter time interval?

for one of our measurements we rented a dGPS with a portable "rover". I have now our measurements from our device which also contain data from built-in GPS (1 second sampling rate) + also the dGPS ...
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0answers
33 views

How can I correctly delete a join from featurelayer using arcobjects?

If I create a join using ArcMap dialog definition query can be changed if joined layer contains a definition query. For example, layer A has definition query "A", layer B has definition query "B", ...
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0answers
24 views

Broken links after joining an .accdb with a .csv in ArcGIS 10.1

I have two sets of data: A "master" file of coordinates that has one row for each location, saved as a .csv file A table with information for each location but no coordinates, saved in an Access ...
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0answers
31 views

Join Standalone Tables from ArcGIS Server in Javascript API

I am trying to find a way to execute the equivalent of the following query with the ArcGIS JavaScript API (I made field and table names generic): SELECT a.field1, a.field2 FROM table1 a, table2 b ...
0
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0answers
53 views

Batch join non-spatial csv to shape files

I have 173 point shape files from soil testing and 173 non spatial csv files with lab ressults (one csv for each shape file) that need joining. The files are located in a library with folders named ...
0
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0answers
59 views

In ArcGIS, how to automatically recalculate a calculation if I modify the Excel data source?

There's a database with buildings. Each of them has a few parameters, for example building type codes. In a distinct table each building type codes has 4 attributes. During the Join, the datas will ...
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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
54 views

export spatial information from table that is joined to a shapefile in QGIS 2.0

I have a table with data values per district for different years. The table looks like this: district name / year / value. The same district is thus present in the data multiple times for different ...
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0answers
66 views

Bug in Qgis 2.0 Field Calculator with Values from Joined table

I have a data of hospitals. I have two excel sheets, one has no of patients examined in each hospital and other has no. of patients treated in each hospital. I want to find percentage of treated ...
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0answers
103 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 ...
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0answers
34 views

Search an attribute and highlight corresponding polygon from a “joined-in” layer [QGIS/PostGIS]

Using QGIS 1.8.0, Postgis 2.1.0, and still new to all that. As the headline points out, I have a list of samples, which are found within areas (no point (GPS) coordinates). With a search query I ...
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0answers
193 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() ...
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0answers
38 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.
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0answers
154 views

MS Access join table values, not recognized by ArcGIS symbology

I joined a MS Access database table to a GIS file. When I try to use symbology (categories) to represent a yes/no value which is in the table file (0/-1) it does not recognize it as a value.
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0answers
437 views

How to do a spatial join if QGIS 1.8 keeps crashing?

I am trying to perform a simple spatial join (adding polygon data to points) in QGIS 1.8: target vector: points join vector: polygons take attributes of first located feature keep all records ...
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0answers
230 views

How to Query Parks in GeoNames and Combine it With a Polygon Layer?

I run a hiking site and would like to get parks where you can at least have a nice walk. That means they should not be playgrounds, stadiums, and probably be bigger than 3 square city blocks at least. ...