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1、Geoway数据交换格式(第一稿)一、文件头描述部分(.GWV)1.文件标识GeowayStandardFileFormatofExchange*ØFileHeaderBegin*2.版本信息[VersionInfo]Version=3.03.投影信息[可选][ProjectionInfo]Projection=projectiondescriptProjectionID=projectionID4.坐标单位信息[可选][CoordinateInfo]CoorUnit=MCoorOffset=East,North5.内容描述[可选][Descriptio
2、n]6.成图信息（可包括图名、图号、比例尺以及部分元数据信息）[可选][MapInfo]MapNumber=mapNumberMapName=mapNameMapScale=mapScale7.自定义信息[可选][UserDefined]ØFileHeaderEnd*yearsmortgagehousing;4.mortgageregistrationformalitiesarecompleted.(D)pledge1.borrower(includingthepledgor)between18-65yearsofage,withfullcivilcap
3、acity;2.collateral第27页共28页一、图层结构定义（.GWV）LayerDefineBegin*[LayerCount]Count=nLayer1’sNameLayer2’sName…Layern’sName[Layer1’sName]Type=0/1(0-普通图层，1-符号化图层)Field=EastMin,NorthMin,EastMax,NorthMaxTableID=idColor=colorClassCount=nClass1’sName,Class1’sCode,Class1’sType(Point,Direct,Label
4、,Line,Direct,Fill,Anno)Class1’sNameBegin*TableID=idColor=colorAnnoSize=Width,HeightClass1’sNameEnd*Class2’sName,Class2’sCode,Class2’sType(Point,Direct,Label,Line,Direct,Fill,Anno)Class2’sNameBeginTableID=idColor=colorAnnoSize=Width,HeightClass2’sNameEnd…Classn’sName,Classn’sCode,
5、Classn’sType(Point,Direct,Label,Line,Direct,Fill,Anno)Classn’sNameBeginTableID=idColor=colorAnnoSize=Width,HeightClassn’sNameEnd……[Layern’sName]…LayerDefineEnd*yearsmortgagehousing;4.mortgageregistrationformalitiesarecompleted.(D)pledge1.borrower(includingthepledgor)between18-65y
6、earsofage,withfullcivilcapacity;2.collateral第27页共28页一、图形部分（.GWV）FigureBegin*1.点[Point]Type*=PointType（0-点、1-有向点、2-标识点）AssociateID=id1[,id2][,id3]…ID*=idGCID=gcidLayer*=LayerNameSID=symbolIDPosition*=x,y[,z]Angle=degree(0-360)2.线[Line]Type*=LineType（0-折线、1-多边形、2-弧、3-矩形、4-圆、5-椭圆）As
7、sociateID=id1[,id2][,id3]…ID*=idGCID=gcidLayer*=LayerNameFill=0/1SID=symbolID3D*=0/1/2Elev=elevation[如果3D=1]Position*=NodeCountx1,y1[,z1](如果3D=2)x2,y2[,z2]…xn,yn[,zn]3.面[Polygon]Type*=PolygonTypeID*=idLayer*=LayerNameLabelXY=x,yyearsmortgagehousing;4.mortgageregistrationformaliti
8、esarecompleted.(D)pledge1.borrower(inclu
