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                maxZoom: 15,
                ip: "develop.smaryun.com",
                port: "6163",    //访问IGServer的端口号，.net版为6163，Java版为8089,
                //天地图key
                token: tdk,
            });
            
            var TiandiMap_ciaIGS =new Zondy.Map.TianDiTu({
                layerType: Zondy.Enum.Map.TiandituType.CVA_IGS,
                projection: ol.proj.get('EPSG:4326'),
                minZoom: 0, //最小显示等级               
           