Image Tile Config File
After an image tile is successfully generated, a series of folder structures will be created under the user-specified tile export directory. For details, please refer to the introduction of Tile Directory.
When tile files are stored in corresponding folders according to rules, the system will also generate a config file in the tile root directory. For image tiles, the config file is in *.sci3d format. The *.sci3d file is an XML file that records storage paths, geographic range of data, number of layers, tile size, and other information. When loading image tile data in 3D environments, users can load corresponding tile data by importing the image tile config file. The content of the image tile config file is shown below.
Image Tile Config File *.sci3d
<?xml version="1.0" encoding="UTF-8"?>
<SuperMapCache>
<!—Version number of the tile file-->
<sml:Version>5.0</sml:Version>
<sml:MinorVersion>1</sml:MinorVersion>
<sml:VersionRequired>5.0</sml:VersionRequired>
<!—Tile name-->
<sml:CacheName>day@World</sml:CacheName>
<sml:Provider/>
<sml:MapName/>
<sml:HashCode/>
<!—Tile projection-->
<sml:CoordinateReferenceSystem>
<!—Reference coordinate system-->
<sml:Nameset>
<sml:name>Longitude / Latitude Coordinate System---GCS_WGS_1984</sml:name>
</sml:Nameset>
<sml:Type>1</sml:Type>
<sml:Units>METER</sml:Units>
<!—Geographic coordinate system-->
<sml:GeographicCoordinateSystem>
<sml:Nameset>
<sml:Name>GCS_WGS_1984</sml:Name>
</sml:Nameset>
<sml:Type>4326</sml:Type>
<sml:Units>DEGREE</sml:Units>
<!—Geodetic reference system-->
<sml:HorizonalGeodeticDatum>
<!—Name of the geodetic reference system-->
<sml:Nameset>
<sml:Name>D_WGS_1984</sml:Name>
</sml:Nameset>
<sml:Type>6326</sml:Type>
<!—Reference spheroid-->
<sml:Ellipsoid>
<sml:Nameset>
<sml:Name>WGS_1984</sml:Name>
</sml:Nameset>
<sml:Type>7030</sml:Type>
<!—Semimajor axis-->
<sml:SemiMajorAxis>6378137.0000000000</sml:SemiMajorAxis>
<!—Spheroid flattening-->
<sml:InverseFlattening>298.2572235630</sml:InverseFlattening>
</sml:Ellipsoid>
</sml:HorizonalGeodeticDatum>
<!—Prime meridian-->
<sml:PrimeMeridian>
<!—Name of the prime meridian-->
<sml:Nameset>
<sml:Name>Greenwich</sml:Name>
</sml:Nameset>
<sml:Type>8901</sml:Type>
<sml:PrimeMeridian>0.0000000000</sml:PrimeMeridian>
</sml:PrimeMeridian>
</sml:GeographicCoordinateSystem>
<sml:MapProjection>
<sml:Nameset>
<sml:Name/>
</sml:Nameset>
<sml:Type>43000</sml:Type>
</sml:MapProjection>
<!—Parameters-->
<sml:Parameters>
<!—False easting-->
<sml:FalseEasting>0.0000000000</sml:FalseEasting>
<!—False northing-->
<sml:FalseNorthing>0.0000000000</sml:FalseNorthing>
<!—Central meridian in degrees-->
<sml:CentralMeridian>0.0000000000</sml:CentralMeridian>
<!—First standard parallel-->
<sml:StandardParallel1>0.0000000000</sml:StandardParallel1>
<!—Second standard parallel-->
<sml:StandardParallel2>0.0000000000</sml:StandardParallel2>
<!—Scale factor-->
<sml:ScaleFactor>0.0000000000</sml:ScaleFactor>
<!—Latitude of origin-->
<sml:CentralParallel>0.0000000000</sml:CentralParallel>
<!—Azimuth angle-->
<sml:Azimuth>0.0000000000</sml:Azimuth>
<!—Longitude of first point-->
<sml:FirstPointLongitude>0.0000000000</sml:FirstPointLongitude>
<!—Longitude of second point-->
<sml:SecondPointLongitude>0.0000000000</sml:SecondPointLongitude>
</sml:Parameters>
</sml:CoordinateReferenceSystem>
<!—Image tile format is DXTZ type-->
<sml:ImageType>DXTZ</sml:ImageType>
<!—Default color-->
<sml:DefaultColor>
<sml:Red>0xFF</sml:Red>
<sml:Green>0xFF</sml:Green>
<sml:Blue>0xFF</sml:Blue>
<sml:Alpha>0xFF</sml:Alpha>
</sml:DefaultColor>
<sml:Transparent>FALSE</sml:Transparent>
<sml:ImageCompress>75</sml:ImageCompress>
<sml:FillMargin>FALSE</sml:FillMargin>
<sml:StorageType>Compact</sml:StorageType>
<sml:TileType>LOCAL</sml:TileType>
<sml:HashCodeEnabled>FALSE</sml:HashCodeEnabled>
<!—Tile pixel size-->
<sml:ImageSize>256</sml:ImageSize>
<!—Geographic range of the image/terrain data used to generate tiles-->
<sml:Bounds>
<sml:Left>-180</sml:Left>
<sml:Top>89.999999999999972</sml:Top>
<sml:Right>180</sml:Right>
<sml:Bottom>-89.999999999999972</sml:Bottom>
</sml:Bounds>
<sml:CoordRatio>3.779527559055119</sml:CoordRatio>
<!—Index bounds of the image/terrain data used to generate tiles-->
<sml:IndexBounds>
<sml:Left>-180</sml:Left>
<sml:Top>89.999999999999972</sml:Top>
<sml:Right>180</sml:Right>
<sml:Bottom>-89.999999999999972</sml:Bottom>
</sml:IndexBounds>
<!—Map bounds of the image/terrain data used to generate tiles-->
<sml:MapBounds>
<sml:Left>-180</sml:Left>
<sml:Top>89.999999999999972</sml:Top>
<sml:Right>180</sml:Right>
<sml:Bottom>-89.999999999999972</sml:Bottom>
</sml:MapBounds>
<!—Scale levels for generating tiles-->
<sml:Scales>
<sml:Scale>
<sml:Value>0.00000000169016357160</sml:Value>
<sml:Caption>591658711</sml:Caption>
</sml:Scale>
<sml:Scale>
<sml:Value>0.00000000338032714321</sml:Value>
<sml:Caption>295829355</sml:Caption>
</sml:Scale>
<sml:Scale>
<sml:Value>0.00000000676065428641</sml:Value>
<sml:Caption>147914678</sml:Caption>
</sml:Scale>
<sml:Scale>
<sml:Value>0.00000001351470637137</sml:Value>
<sml:Caption>73993468</sml:Caption>
</sml:Scale>
</sml:Scales>
<sml:ClipRegion/>
<sml:UserExtendFields>
<sml:UserExtendField>
<sml:Key>WebMapType</sml:Key>
<sml:Value>225</sml:Value>
</sml:UserExtendField>
</sml:UserExtendFields>
</SuperMapCache>