Geographic roles assignment in Tableau - Dashboard Guide

Dashboard Mode - Geographic roles assignment

Business Question

How can we visualize sales data by country and state using geographic roles in Tableau?

Sample Data

Order ID	Country	State	Sales
1001	USA	California	1500
1002	USA	Texas	1200
1003	Canada	Ontario	900
1004	Canada	Quebec	700
1005	USA	New York	1100
1006	Mexico	Jalisco	800
1007	Mexico	Nuevo Leon	600

Dashboard Components

• KPI Card: Total Sales
  Formula: SUM([Sales])
  Result: 6800
• Map 1: Sales by Country
  Geographic Role: Country
  Marks: Filled Map colored by SUM([Sales])
  Shows total sales aggregated per country (USA, Canada, Mexico)
• Map 2: Sales by State/Province
  Geographic Role: State/Province
  Marks: Filled Map colored by SUM([Sales])
  Shows sales distribution within each country by state or province
• Table: Sales Details
  Columns: Order ID, Country, State, Sales
  Shows raw sales data for reference

Dashboard Layout

+----------------------+-----------------------+
|      KPI Card        |     Map 1: Country     |
|   Total Sales: 6800  |  (Colored by Sales)    |
+----------------------+-----------------------+
|        Map 2: State/Province (Bottom Full Width)          |
|               (Colored by Sales)                          |
+-----------------------------------------------------------+
|                      Sales Details Table                   |
+-----------------------------------------------------------+

Interactivity

Clicking on a country in Map 1 filters Map 2 and the Sales Details Table to show only states and orders from that country. Selecting a state in Map 2 further filters the Sales Details Table to show only orders from that state.

Self Check

If you add a filter to select only the country 'USA', which components update and what data do they show?

• KPI Card updates to show total sales for USA: 3800
• Map 2 updates to show only states in USA (California, Texas, New York) with their sales
• Sales Details Table updates to show only orders from USA states

Key Result

Dashboard showing total sales and geographic sales distribution by country and state using geographic roles in Tableau.

Practice

1. What is the main purpose of assigning a geographic role to a field in Tableau?

easy

A. To tell Tableau what type of location data it is, enabling automatic map creation

B. To change the color of the map points

C. To filter data based on dates

D. To sort data alphabetically

Solution

1. Step 1: Understand geographic roles in Tableau

   Geographic roles tell Tableau what kind of location data a field contains, like country or city.

2. Step 2: Recognize the effect of assigning roles

   Assigning the correct role allows Tableau to create maps automatically and accurately.

3. Final Answer:

   To tell Tableau what type of location data it is, enabling automatic map creation -> Option A

4. Quick Check:

   Geographic role purpose = automatic map creation [OK]

Hint: Geographic roles tell Tableau how to map your data [OK]

Common Mistakes:

• Thinking geographic roles change colors or filters
• Confusing geographic roles with data sorting
• Assigning roles to non-location data

2. Which of the following is the correct way to assign a geographic role to a field named City in Tableau?

easy

A. Double-click the field > Change Data Type > City

B. Right-click the field > Geographic Role > City

C. Drag the field to Filters shelf > Select City

D. Right-click the field > Sort > City

Solution

1. Step 1: Locate the field in Tableau's Data pane

   Find the field named City in the data pane.

2. Step 2: Assign geographic role via right-click menu

   Right-click the field, choose Geographic Role, then select City to assign the correct role.

3. Final Answer:

   Right-click the field > Geographic Role > City -> Option B

4. Quick Check:

   Assign role by right-click > Geographic Role [OK]

Hint: Right-click field > Geographic Role > choose correct location type [OK]

Common Mistakes:

• Using Change Data Type instead of Geographic Role
• Dragging field to Filters to assign role
• Sorting field instead of assigning geographic role

3. Given a dataset with a field PostalCode assigned the geographic role 'Postal Code', what will Tableau do when you drag this field to the Rows shelf and add a map visualization?

medium

A. Tableau will treat postal codes as text and not create a map

B. Tableau will show a bar chart of postal codes

C. Tableau will return an error because postal codes are not supported

D. Tableau will plot points on the map based on postal code locations

Solution

1. Step 1: Understand the effect of assigning 'Postal Code' geographic role

   Assigning 'Postal Code' role tells Tableau to interpret the field as location data for mapping.

2. Step 2: Dragging the field to Rows with map visualization

   Tableau uses the postal codes to plot geographic points on the map automatically.

3. Final Answer:

   Tableau will plot points on the map based on postal code locations -> Option D

4. Quick Check:

   Postal Code role = map points plotted [OK]

Hint: Postal Code role enables map plotting by location [OK]

Common Mistakes:

• Expecting a bar chart instead of a map
• Thinking postal codes cause errors
• Assuming postal codes are treated as text

4. You assigned the geographic role 'State' to a field named Region, but Tableau does not display the map correctly. What is the most likely cause?

medium

A. The Region field contains values that are not valid state names

B. You need to assign the role 'City' instead of 'State'

C. Tableau does not support mapping states

D. You forgot to refresh the data source

Solution

1. Step 1: Check the data values in the Region field

   Invalid or misspelled state names cause Tableau to fail mapping correctly.

2. Step 2: Understand Tableau's mapping requirements

   Tableau requires valid geographic names matching the assigned role to plot locations properly.

3. Final Answer:

   The Region field contains values that are not valid state names -> Option A

4. Quick Check:

   Invalid state names cause mapping errors [OK]

Hint: Check data values match assigned geographic role [OK]

Common Mistakes:

• Changing role without checking data correctness
• Assuming Tableau lacks support for states
• Ignoring data refresh when problem is data quality

5. You have a dataset with separate fields for Latitude and Longitude but Tableau is not plotting the map correctly. Which sequence of steps correctly assigns geographic roles to fix this?

hard

A. Drag Latitude and Longitude to Filters shelf

B. Right-click Latitude > Geographic Role > Longitude; Right-click Longitude > Geographic Role > Latitude

C. Right-click Latitude > Geographic Role > Latitude; Right-click Longitude > Geographic Role > Longitude

D. Convert both fields to string data type

Solution

1. Step 1: Assign correct geographic roles to each coordinate field

   Assign 'Latitude' role to the Latitude field and 'Longitude' role to the Longitude field to inform Tableau of their meaning.

2. Step 2: Verify map plotting after role assignment

   With correct roles, Tableau can plot points accurately on the map using these coordinates.

3. Final Answer:

   Right-click Latitude > Geographic Role > Latitude; Right-click Longitude > Geographic Role > Longitude -> Option C

4. Quick Check:

   Correct role assignment for coordinates = accurate map [OK]

Hint: Assign Latitude and Longitude roles to matching fields [OK]

Common Mistakes:

• Swapping latitude and longitude roles
• Dragging coordinate fields to Filters instead of assigning roles
• Changing data type to string instead of geographic role