Land utilization data update method based on space aggregation

Abstract

The invention discloses a land utilization data update method based on space aggregation. The method includes reorganizing land utilization data through a space aggregation method, establishing space aggregation relations among planar layers, and generating data of linear layers corresponding to the planar layers according to space topological relations; allocating the update of land utilization data to the update of base target data based on the space aggregation relations among planar layers of the land utilization data; and updating land utilization upper-layer planar data and linear data through the space aggregation relations and the space topological relations after the update of the base target data. The land utilization data update method based on space aggregation simplifies the update of the land utilization data, guarantees the integrity and the cohesiveness of the land utilization data, updates the land utilization data rapidly, and has significant practical significances for establishing land utilization dynamic monitoring and strengthening land management.

Description

technical field [0001] The invention relates to a method for updating land use data based on spatial aggregation. The invention belongs to the technical field of land use data organization and updating. Background technique [0002] The land use database is constantly updated as time changes. In order to ensure the current situation of land use data, the country conducts a land use change survey every year, and the results of the survey are reflected in the database through data updates. In this process, all land information that has changed in this year is obtained through field surveys, and changes are made one by one for land use entities, and the data update is finally completed. The whole process can only be completed with the help of a large number of spatial data operations and complex topological relationship processing, so it is difficult. [0003] The current land use data update methods have the following deficiencies: [0004] 1. When the change operation caus...

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Problems solved by technology

[0004] 1. When the change operation caused by the change of the administrative area or the change of the parcel is performed, the parcel layer, boundary line layer, boundary point layer, administrative area layer, administrative area boundary layer, sporadic feature layer, linear feature layer, The change of multiple layers such as the patch layer of the land type map and the land type boundary layer involves a large number of layers, complex operations, and difficulties in maintaining the topological relationship between layers, resulting in difficulties in updating land use data;

[0005] 2. Land use data inconsistency will be caused before and after land use change, which needs to be solved through complex adjustment, the process is complicated, and it is difficult to ensure the consistency of land use data

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