private static Ellipsoid ReadEllipsoid(WktStreamTokenizer tokenizer, bool includeAuthority)
        {
            //SPHEROID["Airy 1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]]
            tokenizer.ReadToken("[");
            string name = tokenizer.ReadDoubleQuotedWord();

            tokenizer.ReadToken(",");
            tokenizer.NextToken();
            double majorAxis = tokenizer.GetNumericValue();

            tokenizer.ReadToken(",");
            tokenizer.NextToken();
            double e = tokenizer.GetNumericValue();

            string authority     = String.Empty;
            string authorityCode = String.Empty;

            if (includeAuthority)
            {
                tokenizer.ReadToken(",");
                tokenizer.ReadAuthority(ref authority, ref authorityCode);
            }
            tokenizer.ReadToken("]");
            Ellipsoid ellipsoid = new Ellipsoid(majorAxis, 0.0, e, true, LinearUnit.Meters, String.Empty, authority, authorityCode, name, String.Empty, String.Empty);

            return(ellipsoid);
        }
        private static Projection ReadProjection(WktStreamTokenizer tokenizer, bool includeAuthority)
        {
            //tokenizer.NextToken();// PROJECTION
            tokenizer.ReadToken("PROJECTION");
            tokenizer.ReadToken("[");//[
            string projectionName = tokenizer.ReadDoubleQuotedWord();

            tokenizer.ReadToken("]"); //]
            tokenizer.ReadToken(","); //,
            tokenizer.ReadToken("PARAMETER");
            ParameterList paramList = new ParameterList();

            while (tokenizer.GetStringValue() == "PARAMETER")
            {
                tokenizer.ReadToken("[");
                string paramName = tokenizer.ReadDoubleQuotedWord();
                //added by monoGIS team: parameters names may be capitalized, but the code works only with lower-case!
                paramName = paramName.ToLower();
                tokenizer.ReadToken(",");
                tokenizer.NextToken();
                double paramValue = tokenizer.GetNumericValue();
                tokenizer.ReadToken("]");
                paramList.Add(paramName, paramValue);

                if (!tokenizer.TryReadToken(","))
                {
                    break;
                }
                if (!tokenizer.TryReadToken("PARAMETER"))
                {
                    break;
                }
            }

            ProjectionParameter[] paramArray = new ProjectionParameter[paramList.Count];
            int i = 0;

            foreach (string key in paramList.Keys)
            {
                ProjectionParameter param = new ProjectionParameter();
                param.Name    = key;
                param.Value   = (double)paramList[key];
                paramArray[i] = param;
                i++;
            }
            string     authority     = String.Empty;
            string     authorityCode = String.Empty;
            Projection projection    = new Projection(projectionName, paramArray, String.Empty, String.Empty, authority, authorityCode);

            return(projection);
        }
        private static PrimeMeridian ReadPrimeMeridian(WktStreamTokenizer tokenizer, bool includeAuthority)
        {
            //PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]]
            tokenizer.ReadToken("[");
            string name = tokenizer.ReadDoubleQuotedWord();

            tokenizer.ReadToken(",");
            tokenizer.NextToken();
            double longitude = tokenizer.GetNumericValue();

            string authority     = String.Empty;
            string authorityCode = String.Empty;

            if (includeAuthority)
            {
                tokenizer.ReadToken(",");
                tokenizer.ReadAuthority(ref authority, ref authorityCode);
            }
            // make an assumption about the Angular units - degrees.
            PrimeMeridian primeMeridian = new PrimeMeridian(name, new AngularUnit(180 / Math.PI), longitude, String.Empty, authority, authorityCode, String.Empty, String.Empty);

            tokenizer.ReadToken("]");
            return(primeMeridian);
        }
        private static WGS84ConversionInfo ReadWGS84ConversionInfo(WktStreamTokenizer tokenizer, bool includeAuthority)
        {
            //TOWGS84[0,0,0,0,0,0,0]
            tokenizer.ReadToken("[");
            WGS84ConversionInfo info = new WGS84ConversionInfo();

            tokenizer.NextToken();
            info.Dx = tokenizer.GetNumericValue();
            tokenizer.ReadToken(",");

            tokenizer.NextToken();
            info.Dy = tokenizer.GetNumericValue();
            tokenizer.ReadToken(",");

            tokenizer.NextToken();
            info.Dz = tokenizer.GetNumericValue();
            tokenizer.ReadToken(",");

            tokenizer.NextToken();
            info.Ex = tokenizer.GetNumericValue();
            tokenizer.ReadToken(",");

            tokenizer.NextToken();
            info.Ey = tokenizer.GetNumericValue();
            tokenizer.ReadToken(",");

            tokenizer.NextToken();
            info.Ez = tokenizer.GetNumericValue();
            tokenizer.ReadToken(",");

            tokenizer.NextToken();
            info.Ppm = tokenizer.GetNumericValue();

            tokenizer.ReadToken("]");

            info.IsInUse = true;
            return(info);
        }
        private static Unit ReadUnit(WktStreamTokenizer tokenizer, bool includeAuthority)
        {
            //UNIT["degree",0.01745329251994433,AUTHORITY["EPSG","9102"]]
            Unit unit = null;

            tokenizer.ReadToken("[");
            string unitName = tokenizer.ReadDoubleQuotedWord();

            tokenizer.ReadToken(",");
            tokenizer.NextToken();
            double unitsPerUnit  = tokenizer.GetNumericValue();
            string authority     = String.Empty;
            string authorityCode = String.Empty;

            if (includeAuthority)
            {
                tokenizer.ReadToken(",");
                tokenizer.ReadAuthority(ref authority, ref authorityCode);
            }
            tokenizer.ReadToken("]");
            switch (unitName.ToUpper())
            {
            // take into account the different spellings of the word meter/metre.
            case "METER":
            case "METRE":
            case "KILOMETRE":
            case "KILOMETER":
                unit = new LinearUnit(unitsPerUnit, String.Empty, authority, authorityCode, unitName, String.Empty, String.Empty);
                break;

            case "DEGREE":
            case "RADIAN":
            case "GRAD":
                unit = new AngularUnit(unitsPerUnit, String.Empty, authority, authorityCode, unitName, String.Empty, String.Empty);
                break;

            //case "CLARKE'S LINK":
            //case "GOLD COAST FOOT":
            //case "US SURVEY FOOT":
            //case "CLARKE'S FOOT":
            //case "FOOT":
            //case "LINK":
            //case "INDIAN YARD":
            //case "GERMAN LEGAL METRE":
            //case "BRITISH CHAIN (SEARS 1922)":
            //case "BRITISH FOOT (SEARS 1922)":
            //case "BRITISH CHAIN (SEARS 1922 TRUNCATED)":
            //case "BRITISH CHAIN (BENOIT 1922 TRUNCATED)":
            //    unit = new LinearUnit(unitsPerUnit, String.Empty, authority, authorityCode, unitName, String.Empty, String.Empty);
            //    break;
            default:
                string u = unitName.ToUpper();
                if (u.Contains("YARD") || u.Contains("CHAIN") ||
                    u.Contains("FOOT") || u.Contains("LINK") ||
                    u.Contains("METRE") || u.Contains("METER") ||
                    u.Contains("KILOMETER") || u.Contains("KILOMETRE"))
                {
                    unit = new LinearUnit(unitsPerUnit, String.Empty, authority, authorityCode, unitName, String.Empty, String.Empty);
                }
                else
                {
                    throw new NotImplementedException(String.Format("{0} is not recognized a unit of measure.", unitName));
                }
                break;
            }
            return(unit);
        }
        private static Geotransformation ReadGeotransformation(WktStreamTokenizer tokenizer, bool includeAuthority)
        {
            // GEOGTRAN[
            //       "MGI_To_WGS_1984_2",
            //        GEOGCS[
            //            "GCS_MGI",
            //            DATUM["D_MGI",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],
            //            METHOD["Position_Vector"],
            //            PARAMETER["X_Axis_Translation",577.326],
            //            PARAMETER["Y_Axis_Translation",90.129],
            //            PARAMETER["Z_Axis_Translation",463.919],
            //            PARAMETER["X_Axis_Rotation",5.1365988],
            //            PARAMETER["Y_Axis_Rotation",1.4742],
            //            PARAMETER["Z_Axis_Rotation",5.2970436],
            //            PARAMETER["Scale_Difference",2.4232]
            //]

            tokenizer.ReadToken("[");
            string name = tokenizer.ReadDoubleQuotedWord();

            tokenizer.ReadToken(",");
            tokenizer.ReadToken("GEOGCS");

            GeographicCoordinateSystem geographicCS1 = WktCoordinateSystemReader.ReadGeographicCoordinateSystem(tokenizer, includeAuthority);

            tokenizer.ReadToken(",");
            tokenizer.ReadToken("GEOGCS");

            GeographicCoordinateSystem geographicCS2 = WktCoordinateSystemReader.ReadGeographicCoordinateSystem(tokenizer, includeAuthority);

            tokenizer.ReadToken(",");
            string        method    = String.Empty;
            ParameterList paramList = new ParameterList();

            if (tokenizer.TryReadToken("METHOD"))
            {
                tokenizer.ReadToken("[");
                method = tokenizer.ReadDoubleQuotedWord();
                tokenizer.ReadToken("]");
            }
            if (tokenizer.TryReadToken(","))
            {
                tokenizer.ReadToken("PARAMETER");
                while (tokenizer.GetStringValue() == "PARAMETER")
                {
                    tokenizer.ReadToken("[");
                    string paramName = tokenizer.ReadDoubleQuotedWord();
                    paramName = paramName.ToLower();
                    tokenizer.ReadToken(",");
                    tokenizer.NextToken();
                    double paramValue = tokenizer.GetNumericValue();
                    tokenizer.ReadToken("]");
                    paramList.Add(paramName, paramValue);

                    if (!tokenizer.TryReadToken(","))
                    {
                        break;
                    }
                    if (!tokenizer.TryReadToken("PARAMETER"))
                    {
                        break;
                    }
                }
            }
            return(new Geotransformation(name, method, geographicCS1, geographicCS2, paramList, "", "", "", ""));
        }