Move Region to Color
Move Country to Details
Move Population Total to Size and make sure the Measure is SUM
Add Year to Filters and select 2012. This will filter the data to a single year.
You now have a basic treemap like below. You can move Country or Population Total to Label if you would like to have the countries and population of each country listed in the treemap.
Building Level of Detail in Tree Map
Step 1: Create a new parameter
Parameter Name: Select Region
Data Type: String
Allowable Values: List
Select Add from Field and select Region
Once the values for the Regions are filled in, add All and None to the list.
Right-click on the new parameter and select Show Parameter.
Step 2: Create Calculated Field
Calculated Field Name: Detail Level
if [Select Region] = [Region] then [Country]
elseif [Select Region] = 'All' then [Country]
Step 3: Use the New field Detail Level in place of Country
Now we can view the map at different levels of detail:
If All is selected then it will be at the lowest level of detail - Country.
If None is selected then it will be at the highest level of detail - Region.
If any of the Regions are individually selected then it will use the Country for that selection and Region for everything else.