Writes or changes a GeoKey to an existing file.
public void WriteGeoKey(
string fileName,
int pageNumber,
RasterTagMetadata geoKey
)
Public Overloads Sub WriteGeoKey( _
ByVal fileName As String, _
ByVal pageNumber As Integer, _
ByVal geoKey As RasterTagMetadata _
)
- (BOOL)writeGeoKey:(nullable LTRasterTagMetadata *)geoKey
toFile:(NSString *)file
pageNumber:(NSInteger)pageNumber
error:(NSError **)error
public:
void WriteGeoKey(
String^ fileName,
int pageNumber,
RasterTagMetadata^ geoKey
)
fileName
A String that contains the filename.
pageNumber
1-based index of the page at which to write the GeoKey.
geoKey
GeoKey to identify the data in the Geo TIFF file.
This method writes to or changes the GeoKeys in an existing file.
This method works only with TIFF files. If you also want to write the other TIFF tags and comments, use WriteMarkers instead.
Note: Use this method carefully. LEADTOOLS will not restrict the GeoKeys that you write. If you write bad GeoKeys, the file might become corrupted. Consult the GeoTIFF specification documentation for a list of GeoKeys.
Some restrictions apply to this function if you use an IFD to indicate to which page to write the GeoKey. See the Loading and Saving Large TIFF / BigTIFF Files topic for more information.
This example will show all the GeoKeys in the given file and then load them and add them to a destination file
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
using Leadtools.Svg;
using LeadtoolsExamples.Common;
string geoKeySrcFileName;
string geoKeyDestFileName;
void WriteGeoKeyExample(string srcFileName, string destFileName)
{
RasterCodecs codecs = new RasterCodecs();
geoKeySrcFileName = srcFileName;
geoKeyDestFileName = destFileName;
codecs.GeoKeyFound += new EventHandler<CodecsEnumGeoKeysEventArgs>(codecs_MyGeyKeyFound);
codecs.EnumGeoKeys(srcFileName, 1);
codecs.GeoKeyFound -= new EventHandler<CodecsEnumGeoKeysEventArgs>(codecs_MyGeyKeyFound);
// Clean up
codecs.Dispose();
}
void codecs_MyGeyKeyFound(object sender, CodecsEnumGeoKeysEventArgs e)
{
Console.WriteLine("GeoKey: Id={0}, Count={1}, Type={2}, Data Length={3}, Data=", e.Id, e.Count, e.MetadataType, e.Buffer.Length);
// Load this GeoKey
RasterCodecs codecs = sender as RasterCodecs;
RasterTagMetadata geoKey = codecs.ReadGeoKey(geoKeySrcFileName, 1, e.Id);
// Write it to the destination file
Console.WriteLine("Writing this GeoKey to the destination file");
codecs.WriteGeoKey(geoKeyDestFileName, 1, geoKey);
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Drawing
Imports Leadtools.Svg
Private geoKeySrcFileName As String
Private geoKeyDestFileName As String
Private Sub WriteGeoKeyExample(ByVal srcFileName As String, ByVal destFileName As String)
Dim codecs As RasterCodecs = New RasterCodecs()
geoKeySrcFileName = srcFileName
geoKeyDestFileName = destFileName
AddHandler codecs.GeoKeyFound, AddressOf codecs_MyGeyKeyFound
codecs.EnumGeoKeys(srcFileName, 1)
RemoveHandler codecs.GeoKeyFound, AddressOf codecs_MyGeyKeyFound
' Clean up
codecs.Dispose()
End Sub
Private Sub codecs_MyGeyKeyFound(ByVal sender As Object, ByVal e As CodecsEnumGeoKeysEventArgs)
Console.WriteLine("GeoKey: Id={0}, Count={1}, Type={2}, DataLength={3}, Data=", e.Id, e.Count, e.MetadataType, e.Buffer.Length)
' Load this GeoKey
Dim codecs As RasterCodecs = TryCast(sender, RasterCodecs)
Dim geoKey As RasterTagMetadata = codecs.ReadGeoKey(geoKeySrcFileName, 1, e.Id)
' Write it to the destination file
Console.WriteLine("Writing this GeoKey to the destination file")
codecs.WriteGeoKey(geoKeyDestFileName, 1, geoKey)
End Sub
c#[Silverlight C# Example]
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Examples;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
using Leadtools.Windows.Media;
Stream geoKeySrcStream;
Stream geoKeyDestStream;
void WriteGeoKeyExample(Stream inStreamGeyKey, Stream outStreamGeyKey)
{
RasterCodecs codecs = new RasterCodecs();
geoKeySrcStream = inStreamGeyKey;
geoKeyDestStream = outStreamGeyKey;
codecs.GeoKeyFound += new EventHandler<CodecsEnumGeoKeysEventArgs>(codecs_MyGeyKeyFound);
codecs.EnumGeoKeys(inStreamGeyKey, 1);
codecs.GeoKeyFound -= new EventHandler<CodecsEnumGeoKeysEventArgs>(codecs_MyGeyKeyFound);
}
void codecs_MyGeyKeyFound(object sender, CodecsEnumGeoKeysEventArgs e)
{
Debug.WriteLine("GeoKey: Id={0}, Count={1}, Type={2}, DataLength={3}, Data=", e.Id, e.Count, e.MetadataType, e.Buffer.Length);
// Load this GeoKey
RasterCodecs codecs = sender as RasterCodecs;
RasterTagMetadata geoKey = codecs.ReadGeoKey(geoKeySrcStream, 1, e.Id);
// Write it to the destination file
Debug.WriteLine("Wirting this GeoKey to the destination file");
codecs.WriteGeoKey(geoKeyDestStream, 1, geoKey);
}
vb[Silverlight VB Example]
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Windows.Media
Private geoKeySrcStream As Stream
Private geoKeyDestStream As Stream
Private Sub WriteGeoKeyExample(ByVal inStreamGeyKey As Stream, ByVal outStreamGeyKey As Stream)
Dim codecs As RasterCodecs = New RasterCodecs()
geoKeySrcStream = inStreamGeyKey
geoKeyDestStream = outStreamGeyKey
AddHandler codecs.GeoKeyFound, AddressOf codecs_MyGeyKeyFound
codecs.EnumGeoKeys(inStreamGeyKey, 1)
RemoveHandler codecs.GeoKeyFound, AddressOf codecs_MyGeyKeyFound
End Sub
Private Sub codecs_MyGeyKeyFound(ByVal sender As Object, ByVal e As CodecsEnumGeoKeysEventArgs)
Debug.WriteLine("GeoKey: Id={0}, Count={1}, Type={2}, DataLength={3}, Data=", e.Id, e.Count, e.MetadataType, e.Buffer.Length)
' Load this GeoKey
Dim codecs As RasterCodecs = TryCast(sender, RasterCodecs)
Dim geoKey As RasterTagMetadata = codecs.ReadGeoKey(geoKeySrcStream, 1, e.Id)
' Write it to the destination file
Debug.WriteLine("Wirting this GeoKey to the destination file")
codecs.WriteGeoKey(geoKeyDestStream, 1, geoKey)
End Sub
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