real-time buffer

The combination of these two methods, which can the use to the full of the GIS overlay analysis and buffer analysis, spatial analysis function and the ability to deal with attribute data, can effectively and objectively reflect the real extent of the quality of arable land.

这两种方法的结合，充分运用了GIS的叠置分析和缓冲分析等空间分析功能和处理属性数据的能力，能有效、客观的反映耕地质量的实际程度。

A method for preventing memory from being covered was implemented for the buffer that was set in memory may be covered in the real mode. 4.

针对实模式下内存中设置的缓存可能被覆盖的情况，研究实现了一种内存防覆盖的方法。

According to the characteristic of the data and the requirement of the preliminary planning of real estate projects, the design implements the function including buffer analysis, overlap analysis, density analysis, ring buffer analysis, interpolate analysis.

根据分类后数据的特点和房地产前期策划的需求，设计实现了密度分析、缓冲区分析、叠加分析、条件选择功能，同时系统还提供了插值分析和多环缓冲区功能可供选择使用。