問題文
A map visualization has to place customers as points from the workbook's dataset and, over that same map, show a service boundary that is held centrally rather than in the dataset. Which parts does that call for?
選択肢
- A map background chosen for the boundary, over which the customers arrive as the single data layer that a map visualization is able to hold.
- A data layer built out of the dataset columns for the customers, plus a reference layer picked from the list held in the instance for the boundary.
- Two data layers over one background, the first drawn out of the dataset's columns for the customers, the second drawn out of the columns of the boundary.
- A reference layer for the customers, over which a map background supplies the boundary out of the imagery that the instance has already loaded.