| 摘要 |
An embodiment relates generally to a method of generating user-specified information. The method includes receiving a plurality of points selected on a map to form a first continuous line having one or more vertices. The method also includes generating a closed polygon having a plurality of edges, where at least one edge forms a second continuous line substantially parallel to and spaced apart at a distance from the first continuous line. The method also includes determining a plurality of coordinate pairs each associated with a point on the plurality of edges of the closed polygon and retrieving user specified information for an area enclosed by the plurality of coordinate pairs.
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