Leadtools.Codecs Namespace > RasterCodecs Class > ReadGeoKey Method : ReadGeoKey(Stream,Int32,Int32) Method |
GeoKey ID. Values of the GeoKey ID range between 0 and 65535. Possible ranges are:
Range | Meaning |
---|---|
0..1023 | Do not use; reserved for future use. |
1024..2047 | GeoTIFF Configuration Keys. |
2048..3071 | Geographic/Geocentric CS Parameter Keys. |
3072..4095 | Projected CS Parameter Keys. |
4096..5119 | Vertical CS Parameter Keys. |
5120..32767 | Reserved. |
32768..65535 | Private use - use to store your own data. |
public RasterTagMetadata ReadGeoKey( Stream stream, int pageNumber, int id )
'Declaration Public Overloads Function ReadGeoKey( _ ByVal stream As Stream, _ ByVal pageNumber As Integer, _ ByVal id As Integer _ ) As RasterTagMetadata
'Usage Dim instance As RasterCodecs Dim stream As Stream Dim pageNumber As Integer Dim id As Integer Dim value As RasterTagMetadata value = instance.ReadGeoKey(stream, pageNumber, id)
public RasterTagMetadata ReadGeoKey( Stream stream, int pageNumber, int id )
-(LTRasterTagMetadata*)readGeoKey:(LTLeadStream*)stream pageNumber:(unsigned int)pageNumber tagId:(int)tagId error:(NSError**)outError;
public RasterTagMetadata readGeoKey(ILeadStream stream, int pageNumber, int id)
function Leadtools.Codecs.RasterCodecs.ReadGeoKey(Stream,Int32,Int32)( stream , pageNumber , id )
public: RasterTagMetadata^ ReadGeoKey( Stream^ stream, int pageNumber, int id )
GeoKey ID. Values of the GeoKey ID range between 0 and 65535. Possible ranges are:
Range | Meaning |
---|---|
0..1023 | Do not use; reserved for future use. |
1024..2047 | GeoTIFF Configuration Keys. |
2048..3071 | Geographic/Geocentric CS Parameter Keys. |
3072..4095 | Projected CS Parameter Keys. |
4096..5119 | Vertical CS Parameter Keys. |
5120..32767 | Reserved. |
32768..65535 | Private use - use to store your own data. |
You can use this method to obtain the GeoKey data from a particular file.
If no such GeoKey exists in the image, this method will return a null reference (Nothing in Visual Basic).
The most efficient way of reading the GeoKeys in a file is to enumerate them with EnumGeoKeys(String,Int32) and then read each GeoKey with ReadGeoKey(String,Int32,Int32).