A world map may use bubbles to show relative measurement values for countries.
The following steps demonstrate how to create a new map visual on the dataset World Life Expectancy
[data source samples.world_life_expectancy
]. It produces bubbles with area that corresponds to the relative population in each country.
World Life Expectancy
[data source samples.world_life_expectancy
]; see Creating Visuals.In the visuals menu, find and click map, the sixth choice on the third row.
Note that the shelves of the visual changed. They are now X, Y, Geo, Measures, Tooltips, and Filters.
The only mandatory shelf for map visuals is Geo.
Populate the shelves from the available fields (Dimensions, Measures, and so on) in the Data menu.
country
and drag it over the Geo shelf on the main part of the screen. Drop to add it to the shelf.population
and drag it over the Measures shelf on the main part of the screen. Drop to add it to the shelf.On the shelf, on sum(population)
field, click the icon (down arrow), select Aggregates, and then select Remove Aggregate.
Note that the shelf now contains the modified field population
.
Click Refresh Visual.
The map visual graph appears.
[Optional] On the Tooltips shelf, add several fields from Dimensions and Measures.
This enables you to see specific descriptive information in your visuals, such as input values, segment affiliation, and calculations.
For example,
un_subregion
, un_region
, and year
onto the Tooltips shelf.Alias these fields: country
as Country
,
un_subregion
as UN Subregion
,
un_region
as UN Region
, and year
as
Year
. Use these steps to assign each alias:
On the shelf of the visual, click the icon to the right of the field.
In the Field Properties menu, click the icon next to Alias.
In the text box below Alias, enter the alias name of column, as it should appear in the visual.
Click icon at the top of the Field Properties menu to close it.
Note that the shelf now shows the column with its alias name.
Population
, click the icon (down arrow), select Display Format, and enter ,
.
Click Refresh Visual.
The map visual appears. You can move the visual (pan), zoom in and out, and see the details in the Tooltips text.
Notice that the bubbles are very large, and it is difficult to see which bubble represents each country.
1-30
, as described in Changing the Mark Size Range.Click Refresh Visual.
Notice that the relative size of bubbles is smaller, and there is less overlap.
Click (pencil icon) next to the title of the visualization to edit it, and enter the new name.
World Population - Map with Bubbles
.At the top left corner of the Visual Designer, click Save.