海量栅格地理数据的组织与调度

针对目前海量栅格地理数据量大、结构复杂且难于管理与维护的现状,通过分析传统金字塔模型中瓦片的划分及编码方式,提出多金字塔混合组织模型,即在一个主体金字塔中,可任意包含多个子金字塔,各子金字塔模型相互独立且可部署在不同主机,从而便于数据独立制作与管理。分析子金字塔的标识及其瓦片编码,在数据组织的基础上,讨论栅格数据在显示过程中位于不同数据组织模型及不同操作下的具体调度方式。

Organizing and Scheduling of the Massive Grid Geographic Data

Now the large amount and complex structure of massive grid geographic data make the data difficult to manage and maintain.Based on the research of original pyramid model,multi-pyramid mixed organization model is put forward,which provides a new solution to organize massive grid data.This new model means that a main pyramid could include some sub pyramids.Each sub pyramid is independent,which can be deployed to different host.In the paper,it is discussed that the schedule method of grid data in different data organization model when grid data are displayed in the window,which can achieve good effect in practice.