Google Analytics Data API has been updated with a new feature called Comparisons.
This feature allows users to evaluate subsets of their data side by side.
The update includes changes to the core reporting methods of Data API v1beta to support the comparisons field.
Users can specify basic comparisons using dimensionFilter expressions or use saved comparisons by providing the comparison’s resource name.
The getMetadata method now lists all saved comparisons available for a property.
Saved comparisons can currently only be created using the Google Analytics UI.
