实现ESRI的数据读取展现，符合潮流的B/S架构GIS-achieve ESRI read the data show, in line with the trend of the B / S GIS

绘制图形的CGraph类，可以绘制各种图形如走势线、直方图、饼图, The plan graph CGraph kind, may draw up each kind of graph like trend line, the histogram, the cake chart