Questions tagged [relates]

The process of connecting two or more datasets having one-to-many or many-to-many relationships based on a common attribute.

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QGIS aggregate expression to filter selected features in 2nd layer

I´m working with two layers in QGIS: First one with point geometries representing water quality sampling places (LAYER A). The second is a spreadsheet (no geometries) that contains pollution values ...
1 vote
1 answer
97 views

QGIS - expressions with fields from a related layer

In QGIS I have: a point layer; a table; a relation (Project > Properties > Relations) 1 to many between the points and the table; What I need to do is to set a graduated symbology on the layer ...
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1 vote
1 answer
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Can I save nested Layers in a long format table?

I want to create a QGIS project for sampling crustaceans in rivers using Qfield. I want to collect environmental data as well as the abundance of each species found in different microhabitats. So far ...
2 votes
1 answer
58 views

Filtering an aggregate function in a many to many relationship to only records related to current record in QGIS

I have two tables related as an N-M relationship: Sites: id, geometry Jobs: id, jobnum, ..... Sites_Jobs: id, site_id, job_id I want to define a label for the Sites layer that displays all the ...
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16 views

Bring two (or more) attributes in different fields from parent to child table

I have a project set up with a parent and child relationship. The parent is the geospatial data with various attributes including a UID and Name. The child table is for regular site checks. The ...
3 votes
2 answers
94 views

Building a WFS whose features hold lists of records

I've got two tables in a PostgreSQL/PostGIS database: UTM (geom geometry(Polygon,25830),utmcode character varying(6)) Species (species_name character varying(50), utmcode character varying(6), ...
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ArcMap query layer versus geodatabase relationship discrepency

I have a geodatabase with relationships between tables. objet_poly <-> objet_recense <-> detail_objet <-> mention Now I need to filter out objects from one table based on the values ...
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NM Relation working VERY slow

I think that I'm missing something important because I have a NM relation with few features that goes very slow. Can't believe that this relationship can't go faster. I explain the case, I have 2 ...
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50 views

Search on related tables in ArcGIS Portal

I have a point feature class located on an SQL database and use it to create maps in ArcMap using an sde connection. This feature class has several related tables, one of which has information I would ...
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22 views

Assigning different editing types to related layers within hosted feature layer using ArcGIS Online

In ArcGIS Online, I have a hosted feature layer containing a parent layer and several related sibling layers. I would like to assign different editing types to the parent and sibling layers (full ...
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Formulating Table Relate using ArcMap

I'm moving our floorplans for a major organization into GIS to take advantage of analytical capabilities. I've prepared and figured polygons for each classification layer I want but when it comes to ...
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1 vote
0 answers
40 views

Relate two tables with different number of entities

I want to join two layers: One which has information about the height and width of the wind turbines (fields to join) with only 4 or 5 entities or sometimes less, and the other is a layer with lots of ...
0 votes
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46 views

QGIS relation_aggregate: Display a label on report for numbers?

How can I display a list of numbers in a report when using layers/tables linked by relation? I have created a report layout and need to include some labels. There is a table relation set to another ...
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35 views

Filter by field value in a child table

In QGIS, I would like to filter the display of a parent table in (a postgis point theme) by the values in a field from a child table (a postgresql table in the same db). The parent table and child ...
1 vote
1 answer
158 views

List string values from multiple related tables in ArcGIS Pro popup

I have a polygon feature class (BIA tribal boundaries) with three relationship classes set up to relate to three separate tables, each with a 1:M cardinality from the feature class to the table. I ...
0 votes
1 answer
58 views

Exporting 1:M relate in ArcMap

I am using ArcMap 10.8. I have a relate established between a US Census shapefile and other US federal data (FCC form 477). The 477 data is going to have many records for each census block. A relate ...
1 vote
2 answers
71 views

Layer Symbology based on child table value

I have a point layer (Dormouse) linked to a child geometry-less table (DormouseSurveyData) with a 1-n relationship. I am trying to set up the symbology of the point layer to change color dependent on ...
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How to edit two field have the same domain at the same time in ArcGIS?

I have two layers (Parcel and Building ) with fields that have the same domain, for example ; layer (Parcel) has fields with names ("Building status", "Land Use") with domains (...
1 vote
0 answers
71 views

Display Related Data in Popups for Grouped Layers

I am creating a web map from a map service that contains related data. I want to display the related data in my point feature popups. I thought it would be easy to pull in the related tables in Arcade ...
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1 vote
2 answers
320 views

Joining table to feature class based on two or more fields using ArcMap

I have a table and I would like to join it to a polygon feature class but based on two columns. As in if the polygon has the same values in in column A and column B it will join. If the table has the ...
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33 views

Creating hyperlink with relative path in related standalone table using ArcMap [duplicate]

I have a polygon feature class which has a related table (1:n Relationship) containing the relative path of pdf documents in a field. Using the Info-Tool to click in a polygon in ArcMap 10.7 I can see ...
1 vote
2 answers
302 views

Rule-based symbology based on related layer in QGIS

I'm working with QGIS I have two layers: Layer 1: has the id and geom columns (multypolygon layer) Layer 2: has the id, gid and type columns (table layer). The value gid of layer 2 is the foreign ...
3 votes
0 answers
89 views

Enforce that all "Enforce expression constraints" of child tables are valid before I can save the parent feature

In QGIS 3.16 I set up a relation between two tables. In the child-table I set a constraint-expression and checked "Enforce expression constraints". If I add one or more features to the child-...
1 vote
1 answer
367 views

How I can make a child table appear in the parent table of attributes in QGIS?

I used "relate" to connect a many to one child table to a parent table (addresses to land parcels, one parcel can have several parcels) and I see it in the "form view but it is not ...
1 vote
0 answers
109 views

Filter parent layer with child table in 1-N relation in QGIS

I have a layer with a related (1-N) table and I need to filter the parent layer with values of the child table. I have tried with the Query builder of the Provider feature filter in the layer ...
0 votes
1 answer
322 views

Performing many to one join in QGIS

I have read https://docs.qgis.org/2.18/en/docs/user_manual/working_with_vector/attribute_table.html#creating-one-or-many-to-many-relations and also many to one join in QGIS but I can't seem to be able ...
0 votes
1 answer
32 views

How to join/relate points to polygons by field

I am using ArcMap with a basic license. I have a layer of polygon parcels and a layer of point turnouts. The turnouts deliver water to the parcel, but are not located within the parcel. My parcels ...
1 vote
1 answer
36 views

Join/relation not an available widget option in the attributes form?

I cannot figure out why, but, in a tree/planting projects database, I have a fairly simply data model where I have one polygon layer to symbolize the area/project (eg. Maple Oak Park, John Smith ...
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2 votes
2 answers
458 views

Using ArcPy search cursor to relate .csv and .shp

I am using ArcMap 10.6.1. I'm trying to write a script that relates data from a .csv file to a utility pole shape file. Basically, we want the script to iterate through the pole # fields in each table ...
1 vote
1 answer
444 views

Many to one relationship or join in QGIS

I have a road network layer that has a unique id "ID_2" for each road segment. I also have a table that contains the route for each bus network. Each row in this table contains the name of the bus and ...
1 vote
0 answers
302 views

Container 'Control visibility by expression' for relations

I have two relations in a project on QGIS 3.10. They have the same field ('fid') of the parent but different fields ('topo_part';'topo_part_loc') of the same child. I want to see these relations in ...
0 votes
0 answers
26 views

How best to relate historical testing data to a shapefile?

I am tasked with bringing what has historically been only tracked in Excel into a shapefile. I am using ArcMap, but also have QGIS installed on my computer What these shapefiles will include is ...
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1 vote
0 answers
99 views

Using 1:n table relationships in rule-based symbology

I would like to use the value of a field/attribute in a parent table as a filter in an expression used to display features in the child table. Specifically, I have a 1:n relationship in my project: ...
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1 vote
1 answer
225 views

QGIS - Using Rule Based Labels With Related Tables

I have a two csv tables that have been related to eachother (RelatedResults): Table 1 = Locations which is loaded as points Which has the fields[ID] [Type] [X] [Y] Example: Point_1, Frogs, LAT, LONG ...
0 votes
1 answer
40 views

Finding point from Layer B that matches point from Layer A using search radius

I have two point shapefiles of trees from two different surveys. I want to verify if data from Survey A matches data from Survey B. I want to create a search radius of 10m around each tree from ...
3 votes
2 answers
106 views

Performing one-to-many join with address and crime data using ArcMap

Goal: I want to show the police calls coming from a parcel on ArcMap. So if you click on the parcel, it will show all the calls for the year. I want to join the address attribute from the parcel data ...
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3 votes
1 answer
350 views

Get Attributes from 1:n relation in QGIS as Expression to use in Atlas

I need to set up way signs for something like a "hiking-GIS". In the first step I made a network analysis (using QNEAT3) to find the distance from the signs ("Way Signs") to the available destinations ...
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1 vote
0 answers
110 views

Making chart with related table using ArcGIS Pro

I have a feature class with some locations of drills. I also have a table with data how deep the drill went and some more technical data in it. I used relate on the feature class to connect the ...
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1 vote
0 answers
31 views

n:m relations of lines including directions

For trail planning and route signalization projects, I am looking for a solutions which allows me to connect "physical" trail segments (available as .gdb from authorities) with overlaying routes, ...
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1 vote
0 answers
30 views

Joining my spreadsheet data to my geodatabase file is not including all matching records

I have a map with roads, trails, and site gdb layers, and I have an Excel spreadsheet that I have imported with a list of the permitted companies for each of the designated roads and trails. I would ...
1 vote
0 answers
374 views

Using related records added on Collector (for ArcGIS) to update original feature class values and symbology

I currently use Collector for ArcGIS to carry out tree inspections. The design consists of two parts - a feature class layer which contains a point for each tree including data such as its species, ...
0 votes
1 answer
37 views

Will my join remove my relate?

I have spatial data that has an existing related table with photo info. I have data from another separate table that I want to join and then field calculate to add to my spatial data, then I would ...
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1 vote
1 answer
32 views

Splitting lines: Options for managing IDs and related records

I have roads in a feature class (Oracle 10.3 geodatabase). Roads are split into separate lines where they intersect. This is an established business rule that cannot be changed. Each road has ...
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3 votes
0 answers
132 views

QGIS 3 embedded forms - zoom or pan to child features

I have two tables and a relation defined on them via an 'in-between-table' (many-to-many relationship) like this: This gives me nice embedded forms like shown below: What I would like to achieve is ...
2 votes
0 answers
74 views

Possible bottleneck in QGIS 1:n relation?

I've set up a 1:n relation linking two layers of the same geopackage. That are about 200k polygons in parcels and 700k rows in owners (non spatial). Now it works as expected but it is painstakingly ...
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1 vote
0 answers
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Creating ArcGIS Online webapp builder Cemetery search?

I created an ArcGIS Online webapp builder app for a cemetery project. I loaded a relationship class into ArcGIS Online that relates plot polygons to a table of interred individuals. It is a 1 to many ...
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0 votes
1 answer
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Creating relationship class for many to many relationship

In Arcmap 10.7, I am trying to set up a relationship class that will link parcels to owners. The end goal is to be able select a parcel and see the owner, or multiple owners associated with it. Some ...
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0 votes
1 answer
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1:n relations in label expressions & general syntax

I've got a colleague who wants to create a (concatenated) label based on a 1:n relation between some shapes and related tables. They asked me if this was possible in QGIS - and I think it should. I ...
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4 votes
1 answer
349 views

Labeling polygons with the number of related table entries in QGIS

Using QGIS 3.6.1 I have a layer with areas and a table with entries related to the areas: A relation is defined like this: What I would like to achieve is to label the areas with the number of ...
1 vote
2 answers
1k views

Displaying attribute value from related layer in QGIS Atlas?

I work on QGIS 3.4.4 Madeira. I have two related layers in my project :"towns" (polygon) and "interest points" (points), the common field is "town name". In the Atlas, my cover layer is "towns". I ...
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