| 摘要 |
<p>Streaming data in a geographic information system (GIS). A request for an object is received for presentation of the object along with image data. The object is described by an attribute. A level of detail (LOD) is determined. The attribute can be compared to the LOD. The object can be selectively streamed based on a result of the comparison of the attribute with the LOD. The object can be received from a data storage and retrieval subsystem of the GIS system by a data manipulation and analysis subsystem. The streaming of requests and data between the data storage and retrieval subsystem and the data manipulation and analysis subsystem can take place over a network such as a local area network, a wide area network, and/or the Internet.
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