public void EnumGeoKeys(
string fileName,
int pageNumber
)
Public Overloads Sub EnumGeoKeys( _
ByVal fileName As String, _
ByVal pageNumber As Integer _
)
- (BOOL)enumerateGeoKeysInFile:(NSString *)file
pageNumber:(NSInteger)pageNumber
callback:(void (^)(LTCodecsEnumGeoKeysEventArgs *geoKeyInfo))handler
error:(NSError **)error
public:
void EnumGeoKeys(
String^ fileName,
int pageNumber
)
fileName
A String containing the input file name.
pageNumber
1-based index of the page from which to enumerate the tags.
To enumerate all the keys stored in a stream, use EnumGeoKeys.
For multipage Geo TIFF files, you can enumerate the GeoKeys from a particular page. Specify the page number whose GeoKeys to enumerate.
The GeoKeyFound event is called for each GeoKey value stored in the three standard Geo TIFF tags (34735, 34736 and 34737). For enumerating the other standard Geo TIFF data stored as separate tags, you can use EnumTags. Or, you can call ReadTag for each of these tags (since there are not that many of them to warrant the use of EnumTags).
For more information, refer toImplementing GeoKeys (GeoTIFF tags).
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;
IList<RasterTagMetadata> myGeoKeys;
string geoKeyFileName;
void EnumGeoKeysExample(string srcFileName, string destFileName)
{
RasterCodecs codecs = new RasterCodecs();
geoKeyFileName = srcFileName;
myGeoKeys = new List<RasterTagMetadata>();
codecs.GeoKeyFound += new EventHandler<CodecsEnumGeoKeysEventArgs>(codecs_GeyKeyFound);
codecs.EnumGeoKeys(srcFileName, 1);
codecs.GeoKeyFound -= new EventHandler<CodecsEnumGeoKeysEventArgs>(codecs_GeyKeyFound);
// We read all the tags now, save them to the file
Console.WriteLine("{0} GeoKeys read, saving them to the destination file", myGeoKeys.Count);
codecs.WriteGeoKeys(destFileName, 1, myGeoKeys);
// Clean up
codecs.Dispose();
}
void codecs_GeyKeyFound(object sender, CodecsEnumGeoKeysEventArgs e)
{
Console.Write("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(geoKeyFileName, 1, e.Id);
byte[] data = geoKey.GetData();
for (int i = 0; i < data.Length; i++)
Console.Write("{0:X} ", data[i]);
Console.WriteLine();
// Add it to our collection
myGeoKeys.Add(geoKey);
}
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document
Your email has been sent to support! Someone should be in touch! If your matter is urgent please come back into chat.
Chat Hours:
Monday - Friday, 8:30am to 6pm ET
Thank you for your feedback!
Please fill out the form again to start a new chat.
All agents are currently offline.
Chat Hours:
Monday - Friday
8:30AM - 6PM EST
To contact us please fill out this form and we will contact you via email.