STUDY ON THE KEY TECHNOLOGY OF THE PROVINCIAL FARMLAND GRADING——A CASE FOR GUANGDONG PROVINCE
研究了快速集成半自动制图、获取关键参数和系数、建立不同比例尺地图单元索引以及保持等级一致性的技术，并以广东省为例验证了效果。
In this paper,we discussed the technologies of semiautomatic cartography integration rapidly,acquiring the key parameter and coefficient,establishing the index of the map unit between different scale maps,keeping grade's consistency of different level map.These methods were used in the case for Guangdong province and get a perfect result.It will provide the useful enlightening for the regional integration of farmland grading results.