geoway數(shù)據(jù)交換格式(已修改)
2025-08-16 09:39 本頁(yè)面
【正文】 Geoway數(shù)據(jù)交換格式(第一稿)一、 文件頭描述部分(.GWV)1. 文件標(biāo)識(shí)Geoway Standard File Format of Exchange*216。 FileHeader Begin*2. 版本信息[Version Info]Version = 3. 投影信息[可選][Projection Info]Projection = projection descriptProjectionID = projectionID4. 坐標(biāo)單位信息[可選][Coordinate Info]CoorUnit = MCoorOffset = East, North5. 內(nèi)容描述[可選][Description]6. 成圖信息（可包括圖名、圖號(hào)、比例尺以及部分元數(shù)據(jù)信息）[可選][Map Info]MapNumber = mapNumberMapName = mapNameMapScale = mapScale7. 自定義信息[可選][User Defined]216。 FileHeader End*二、 圖層結(jié)構(gòu)定義（.GWV）LayerDefine Begin*[Layer Count]Count = nLayer1’s NameLayer2’s Name…Layern’s Name[Layer1’s Name]Type = 0 / 1(0 普通圖層，1符號(hào)化圖層)Field = EastMin, NorthMin, EastMax, NorthMaxTableID = idColor = colorClassCount = nClass1’s Name, Class1’s Code, Class1’s Type(Point,Direct,Label,Line,Direct,Fill,Anno) Class1’s Name Begin* TableID = id Color = color AnnoSize = Width,Height Class1’s Name End*Class2’s Name, Class2’s Code, Class2’s Type(Point,Direct,Label,Line,Direct,Fill,Anno) Class2’s Name Begin TableID = id Color = color AnnoSize = Width,Height Class2’s Name End…Classn’s Name, Classn’s Code, Classn’s Type(Point,Direct,Label,Line,Direct,Fill,Anno) Classn’s Name Begin TableID = id Color = color AnnoSize = Width,Height Classn’s Name End……[Layern’s Name]…LayerDefine End*三、 圖形部分（.GWV）Figure Begin*1. 點(diǎn)[Point]Type* = PointType（0點(diǎn)、1有向點(diǎn)、2標(biāo)識(shí)點(diǎn)）AssociateID = id1[,id2][,id3]…ID* = idGCID = gcidLayer* = LayerNameSID = symbolIDPosition* = x,y[,z]Angle = degree (0360)2. 線(xiàn)[Line]Type* = LineType（0折線(xiàn)、1多邊形、2弧、3矩形、4圓、5橢圓）AssociateID = 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, yLabelID = id (LabelXY與LabelID只能有其一)BorderXY = NodeCountx1, y1x2, y2…xn, ynBorderID = IDCount (BorderXY與BorderID只能有其一)id1id2…idnGCID = gcid （當(dāng)LabelID有效時(shí)無(wú)效)SID = symbolID （當(dāng)LabelID有效時(shí)無(wú)效）4. 文字[Annotation]Type* = AnnotationTypeText* = “text” (回車(chē)符用“\n”)AssociateID = id1[,id2][,id3]…ID* = idGCID = gcidLayer* = LayerNameFontName = font’s NameFontSize = Width, HeightAngle = degree （0360）OrientAngle = degree (0360)Space = space （字符間距）ArrangeType = arrange_type （排列方式：橫排、豎排、雁行排列、隨線(xiàn)排列等）AlignType = align_type (0左下，1左中，2左上，3中下，4中心，5中上，6右下，7右中，8右上)Position* = x, yFigure End*四、 屬性部分(.GWA)1. 文件標(biāo)識(shí)Geoway Standard File Format of Exchange[Attribute]*2. 分隔符定義SeparatorDefine Begin*[Separator]Separator = ,SeparatorDefine End*3. 屬性表定義TableDefine Begin*[TableID1]FieldCount = nField1Name, FieldType, FieldSize | FieldPrecisionField2Name, FieldType, FieldSize | FieldPrecision…FieldnName, FieldType, FieldSize | FieldPrecision[TableID2]FieldCount = nField1Name, FieldType, FieldSize | FieldPrecisionField2Name, FieldType, FieldSize | FieldPrecision…Field
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