private async Task SaveToFile(string fileName)
{
var fileExtension = fileName.Split('.').ToArray().Last();
var shapefile = fileExtension == "shp";
string fileNameGTiff = null;
fileNameGTiff = shapefile ? $"{fileName}.tmp" : fileName;
await Task.Run(() =>
{
string[] options = { "PHOTOMETRIC=RGB", "PROFILE=GeoTIFF" };
var finalDataset = Gdal.GetDriverByName("GTiff").Create(fileNameGTiff, _processingBand.XSize,
_processingBand.YSize, 3, DataType.GDT_Byte, options);
finalDataset.SetGeoTransform(_geoTransform);
var spatialReference = new SpatialReference(WKT);
spatialReference.ExportToWkt(out var exportedWkt);
finalDataset.SetProjection(exportedWkt);
var redBand = GetByteArrayFromRaster(_processedImage, _processingBand.XSize, _processingBand.YSize, 0);
var greenBand =
GetByteArrayFromRaster(_processedImage, _processingBand.XSize, _processingBand.YSize, 1);
var blueBand = GetByteArrayFromRaster(_processedImage, _processingBand.XSize, _processingBand.YSize, 2);
finalDataset.GetRasterBand(1).WriteRaster(0, 0, _processingBand.XSize, _processingBand.YSize, redBand,
_processingBand.XSize, _processingBand.YSize, 0, 0);
finalDataset.GetRasterBand(2).WriteRaster(0, 0, _processingBand.XSize, _processingBand.YSize, greenBand,
_processingBand.XSize, _processingBand.YSize, 0, 0);
finalDataset.GetRasterBand(3).WriteRaster(0, 0, _processingBand.XSize, _processingBand.YSize, blueBand,
_processingBand.XSize, _processingBand.YSize, 0, 0);
if (shapefile)
{
string[] optionsShapefile = null;
var finalDatasource = Ogr.GetDriverByName("ESRI Shapefile")
.CreateDataSource(fileName, optionsShapefile);
var layer = finalDatasource.CreateLayer("trees", spatialReference, wkbGeometryType.wkbPolygon,
optionsShapefile);
Gdal.Polygonize(finalDataset.GetRasterBand(1), finalDataset.GetRasterBand(1), layer, -1, null, null,
null);
finalDatasource.FlushCache();
}
else
{
finalDataset.FlushCache();
}
});
}