Digital Graph Library Generating System

This paper analyzes the data exchange fOrmat of MapInfo, based upon which, adigital graph library aiming at the properties of 920 maps digital file fOrmat and GL / 2graphic langUage of HP plotter is designed with the method of Object Orientedanalyzing to meet the demand of engineering practice. A transfOrming method fromvectorized paper map into 920 map's data file format or into ar--GL / 2, is providedusing MapInfO's data exchange format as a media. Ingh reliability and practicability areproved after great number of tests on eIectronic sea map and p1otters. The research andpractice of this paper possess certain practical significance and referefltial value inpromoting the developing domestic electronic maps and unifying various graphic datafOrmats.