by using boolean calculation to carry on the model analysis according to the present dem data, we find that the meilinggou mining area still has an enormous room for development.
通过利用布尔运算对现有dem数据的地表进行建模分析认为煤岭沟矿区依然具有巨大的开发空间和价值。
during data flow analysis, boolean calculation is used to define data flow equations which avoids the complexity of aggregate operation.