The triangulated irregular network(TIN) is a very useful model for data compression and 2 5D analysis.Unfortunately

published algorithms of building multiresolution TIN can't meet the demand of adjusting precision momentarily.This paper presents a set of algorithms for building multiresolution TIN.It covers algorithms of constructing fundamental TIN

of adding points to the current TIN and of removing points from the current TIN.All algorithms were encoded with MSC.Two versions of executable program were provided.One for creating precision determined TIN

the other for adjusting the precision when running.Test result proves the algorithms are correct and the programs are stable and reliable.