Ejemplo n.º 1
0
        private async Task WriteTiles(string outDir)
        {
            var srcMRR = viewModel.Path;

            this.IsEnabled = false;
            var tileGenerator = viewModel.SelectedGenerator.Generator;
            await Task.Run(() =>
            {
                Stopwatch s = new Stopwatch();
                s.Start();
                int maxZoom, totalTiles;
                IRasterDataset dataSet = RasterDatasetFactory.Open(srcMRR);
                tileGenerator.GetJobSize(dataSet, viewModel.MaxZoom > 0 ? viewModel.MaxZoom : 100, out maxZoom, out totalTiles);
                viewModel.MaxProgress     = totalTiles;
                viewModel.ProgressVisible = Visibility.Visible;
                viewModel.ResetProgress();
                System.Progress <int> progress = new Progress <int>((i) => viewModel.AddToProgress(1));
                var output = new CompressedFileOutput(outDir);
                tileGenerator.CreateAllTiles(dataSet, maxZoom, output, progress);
                CreateMissingTopLevelTile(outDir, output);
                s.Stop();
                Console.WriteLine(s.Elapsed);
            });

            this.IsEnabled            = true;
            viewModel.ProgressVisible = Visibility.Collapsed;
        }
Ejemplo n.º 2
0
 public static void CreateTabFilesForRasterFiles(string[] strRasterFiles, string sCoordsys, bool bOverwriteTabFile)
 {
     if (strRasterFiles.Length > 0)
     {
         foreach (string sRasterFile in strRasterFiles)
         {
             RasterDatasetFactory.CreateTABFile(sRasterFile, sCoordsys, bOverwriteTabFile, true);
         }
     }
 }
Ejemplo n.º 3
0
        public static double GetCellAreaAboveThreshold(string inputFile, int fieldIndex, int bandIndex, double threshold)
        {
            // number of cells over threshold
            double cellCount = 0;
            // open the file and get the dataset
            var dataset = RasterDatasetFactory.Open(inputFile);
            // get the raster info
            var info = dataset.Info;
            // get sequential tile iterator for read for current field
            var iterator = dataset.GetSequentialTileIterator(fieldIndex);

            // begin the iterator
            iterator.Begin();
            // iterate over each tile in raster
            foreach (var tile in iterator)
            {
                // get band to read
                uint ubandIndex = (uint)bandIndex;
                var  band       = tile.GetBandData <double>(ubandIndex);
                // iterate over each cell in tile and read
                for (uint y = 0; y < tile.YSize; y++)
                {
                    for (uint x = 0; x < tile.XSize; x++)
                    {
                        double value;
                        bool   valid;
                        // get the cell value
                        band.GetCellValue(x + y * tile.XSize, out value, out valid);
                        // check its valid and above threshold
                        if (valid && (value > threshold))
                        {
                            cellCount++;
                        }
                    }
                }
            }
            // end the iterator
            iterator.End();
            // close the dataset
            dataset.Close();
            // calculate area
            return(cellCount * (info.FieldInfo[fieldIndex].CellSizeX.Decimal * info.FieldInfo[fieldIndex].CellSizeY.Decimal));
        }
Ejemplo n.º 4
0
 public static void CreateTabFileForRasterFile(string strRasterFile, string sCoordsys, bool bOverwriteTabFile)
 {
     RasterDatasetFactory.CreateTABFile(strRasterFile, sCoordsys, bOverwriteTabFile, true);
 }