This paper introduces the GIS space point? Line? Surface entity model based on topology data and the automatic topology model which is based on the objects model.
This two methods are based on standard waveforms, can analyze in real time the waveform data on-line, realize automatic identification of waveform in time domain.
这两种方法都是以标准波形为依据，能够实时在线对监测波形数据进行分析，实现动态时域波形的自动识别。
3
Data quality control is very important during the collection GIS basal data. It mainly introduces a method that applies rarefies and smooth to the automatic forming contour line.