| 主权项 |
1. A computer-implemented method for efficiently changing viewports for viewing digital maps, the method comprising:
displaying, for a certain user via a user interface, a digital map in a current viewport; receiving viewport parameters that indicate geographic centers and zoom levels for a plurality of viewports, wherein the viewport parameters are determined based on a plurality of past activities of the certain user related to geographic areas covered by respective ones of the plurality of viewports, and wherein the plurality of past activities occurred at various times in the past as the certain user interacted with the digital map; displaying respective viewport indicators for the plurality of viewports, including centering each viewport indicator on the digital map at the geographic center of the corresponding viewport; and in response to one of the viewport indicators being selected via the user interface, automatically displaying the digital map in the viewport corresponding to the geographic center and the zoom level of the selected viewport indicator. |
