Tableau Mapping and Geographic Analysis 2 — Questions and Answers
Question 1: In Tableau, what is the primary purpose of the 'Custom Territories' feature when working with geographic fields?
- To add new countries to Tableau's geocoding database
- To group individual geographic locations into user-defined regional boundaries (Correct answer)
- To import Esri shapefiles as custom map backgrounds
- To assign latitude and longitude to unmapped locations manually
Correct answer: To group individual geographic locations into user-defined regional boundaries
Custom Territories allow you to combine existing geographic locations (such as states) into custom-defined regions for analysis, similar to grouping but for geographic data.
Question 2: What is a density map (heatmap) in Tableau primarily used for?
- Showing the exact location of each individual data point
- Visualizing the concentration or clustering of data points across a geographic area (Correct answer)
- Displaying route paths or trajectories between locations
- Comparing measure values across administrative boundaries
Correct answer: Visualizing the concentration or clustering of data points across a geographic area
A density map reveals where data points are most concentrated, making it easy to identify geographic hotspots and distribution patterns across a map.
Question 3: In Tableau Desktop, how do you add a WMS (Web Map Service) as a background map?
- Map > Background Maps > Add WMS Server (Correct answer)
- Map > Map Layers > Add External Layer
- Data > New Data Source > WMS Connection
- Map > Edit Locations > WMS Import
Correct answer: Map > Background Maps > Add WMS Server
You add a WMS background map through the Map menu by selecting Background Maps and then choosing Add WMS Server to specify the service URL.
Question 4: What is the key difference between a symbol map and a filled map in Tableau?
- Symbol maps place sized or colored shapes at point locations; filled maps color entire geographic polygons (Correct answer)
- Symbol maps display categorical data only; filled maps display quantitative data only
- Symbol maps always require explicit lat/long fields; filled maps never do
- Symbol maps are interactive; filled maps cannot be filtered
Correct answer: Symbol maps place sized or colored shapes at point locations; filled maps color entire geographic polygons
Symbol maps place marks (circles, shapes) at specific point locations, while filled maps color entire geographic areas such as states or countries.
Question 5: Which Tableau feature enables you to connect to Esri shapefiles, GeoJSON, or KML files to create custom geographic boundaries on maps?
- Background Images
- Map Layers panel
- Spatial File data source connection (Correct answer)
- Custom Territories builder
Correct answer: Spatial File data source connection
Tableau supports spatial file connections (shapefiles, GeoJSON, KML, TopoJSON) as data sources, enabling custom geographic boundaries beyond Tableau's built-in geocoding.
Question 6: In Tableau, what does the 'Edit Locations' dialog box allow you to do?
- Change the background map tile provider
- Manually resolve unrecognized location names by mapping them to known geographic entities (Correct answer)
- Set the default map zoom level for a dashboard
- Add new geographic roles to custom fields
Correct answer: Manually resolve unrecognized location names by mapping them to known geographic entities
Edit Locations lets you manually match location values that Tableau could not automatically geocode to recognized geographic entities in its database.
Question 7: What Tableau map feature allows users of a published dashboard to pan and zoom to specific geographic locations using a search box?
- Map Layers control
- Map Search (Correct answer)
- Geographic Filter
- Location Spotlight
Correct answer: Map Search
Map Search adds an interactive search box to published maps, enabling dashboard viewers to navigate to specific locations by typing a place name.
Tableau Mapping and Geographic Analysis 2
In Tableau, what is the primary purpose of the 'Custom Territories' feature when working with geographic fields?