Sometimes, it is useful to measure relationships between entities relative to a common denominator. In the case of trade flow data, let's try to visualize the fraction of the global export that each nation services. To do this, we will use a Sunburst chart.
We will take a snapshot of the time-series data and select the trade flow that took place in the year 2013. For this, we will use the Custom Where clause. In the Hierarchy field, set exporter and importer as the parent-child relationship. In the Primary Metric, select SUM(import_in_us_billion) and set its name as total_trade_volume:
Setting parameters for the Sunburst diagram to display trade flow in 2013
Perfect! Now just click on Run Query to render your Sunburst chart Global Trade Flow Between Nations in 2013:
The Sunburst diagram displaying trade flow in 2013
Selecting a parent entity from the inner...