| | |
| | | |
| | | import javax.annotation.Resource; |
| | | import java.io.File; |
| | | import java.util.ArrayList; |
| | | import java.util.List; |
| | | import java.util.Vector; |
| | | import java.util.*; |
| | | |
| | | /** |
| | | * 栅格分析服务 |
| | |
| | | // double rotationX = transform[2]; double rotationY = transform[4] |
| | | double minX = transform[0], pixelWidth = transform[1], maxY = transform[3], pixelHeight = transform[5]; |
| | | |
| | | int bandCount = ds.getRasterCount(); |
| | | int xPixel = (int) Math.floor((x - minX) / pixelWidth); |
| | | int yPixel = (int) Math.floor((maxY - y) / Math.abs(pixelHeight)); |
| | | |
| | | int bandCount = ds.getRasterCount(); |
| | | |
| | | List<double[]> sum = new ArrayList<>(); |
| | | for (int bandIndex = 1; bandIndex <= bandCount; bandIndex++) { |
| | | List<double[]> list = new ArrayList<>(); |
| | | for (int i = 1; i <= bandCount; i++) { |
| | | double[] pixelValues = new double[size * size]; |
| | | Band band = ds.GetRasterBand(bandIndex); |
| | | Band band = ds.GetRasterBand(i); |
| | | band.ReadRaster(xPixel, yPixel, size, size, pixelValues); |
| | | |
| | | sum.add(pixelValues); |
| | | list.add(pixelValues); |
| | | } |
| | | |
| | | //return average(calculateAverage(sum)); |
| | | processResult(entity, list); |
| | | } catch (Exception ex) { |
| | | setError(entity, ex.getMessage()); |
| | | log.error(ex.getMessage(), ex); |
| | |
| | | } |
| | | |
| | | /** |
| | | * 处理结果 |
| | | */ |
| | | private void processResult(AnalysisResultEntity entity, List<double[]> list) { |
| | | if (null == list || list.isEmpty()) { |
| | | return; |
| | | } |
| | | |
| | | List<Double> rs = new ArrayList<>(); |
| | | for (double[] ds : list) { |
| | | if (null != ds && ds.length > 0) { |
| | | for (double d : ds) { |
| | | rs.add(d); |
| | | } |
| | | } |
| | | } |
| | | |
| | | processResult(rs, entity); |
| | | } |
| | | |
| | | /** |
| | | * 处理结果 |
| | | */ |
| | | private void processResult(List<Double> rs, AnalysisResultEntity entity) { |
| | | double min = Collections.min(rs); |
| | | double max = Collections.max(rs); |
| | | double avg = rs.stream().mapToDouble(Double::valueOf).average().getAsDouble(); |
| | | |
| | | entity.setMin(min); |
| | | entity.setMax(max); |
| | | entity.setAvg(avg); |
| | | } |
| | | |
| | | /** |
| | | * 分析线 |
| | | */ |
| | | public List<AnalysisResultEntity> analysisPolyline(Geometry polyline) { |
| | | List<AnalysisResultEntity> rs = new ArrayList<>(); |
| | | // |
| | | |
| | | List<PublishEntity> pubs = publishService.selectRaster(); |
| | | if (null == pubs || pubs.isEmpty()) { |
| | | return rs; |
| | | } |
| | | |
| | | for (PublishEntity pub : pubs) { |
| | | AnalysisResultEntity entity = new AnalysisResultEntity(); |
| | | entity.setLayerName(pub.getName()); |
| | | |
| | | processPolyline(entity, pub, polyline); |
| | | rs.add(entity); |
| | | } |
| | | |
| | | return rs; |
| | | } |
| | | |
| | | /** |
| | | * 处理线 |
| | | */ |
| | | private void processPolyline(AnalysisResultEntity entity, PublishEntity pub, Geometry polyline) { |
| | | List<MetaEntity> metas = publishService.selectMetasByPubid(pub.getId()); |
| | | if (null == metas || metas.isEmpty()) { |
| | | setError(entity, "找不到发布数据"); |
| | | return; |
| | | } |
| | | |
| | | String filePath = pathHelper.getConfig().getUploadPath() + File.separator + metas.get(0).getPath(); |
| | | File file = new File(filePath); |
| | | if (!file.exists() || file.isDirectory()) { |
| | | setError(entity, "源数据不存在"); |
| | | return; |
| | | } |
| | | |
| | | processPolyline(entity, filePath, polyline); |
| | | } |
| | | |
| | | /** |
| | | * 处理线 |
| | | */ |
| | | public void processPolyline(AnalysisResultEntity entity, String filePath, Geometry polyline) { |
| | | Dataset ds = null; |
| | | try { |
| | | ds = gdal.Open(filePath); |
| | | if (null == ds) { |
| | | throw new Exception("打开栅格数据失败"); |
| | | } |
| | | |
| | | double[] transform = ds.GetGeoTransform(); |
| | | // double rotationX = transform[2]; double rotationY = transform[4] |
| | | double minX = transform[0], pixelWidth = transform[1], maxY = transform[3], pixelHeight = transform[5]; |
| | | |
| | | double[] bounds = new double[6]; |
| | | polyline.GetEnvelope(bounds); |
| | | double startX = bounds[0], endX = bounds[1], startY = bounds[2], endY = bounds[3]; |
| | | |
| | | int bandCount = ds.getRasterCount(); |
| | | int xStartPixel = (int) Math.floor((startX - minX) / pixelWidth); |
| | | int yStartPixel = (int) Math.floor((maxY - startY) / Math.abs(pixelHeight)); |
| | | int xEndPixel = (int) Math.floor((endX - minX) / pixelWidth); |
| | | int yEndPixel = (int) Math.floor((maxY - endY) / Math.abs(pixelHeight)); |
| | | |
| | | List<Double> list = new ArrayList<>(); |
| | | for (int y = Math.min(yStartPixel, yEndPixel); y <= Math.max(yStartPixel, yEndPixel); y++) { |
| | | for (int x = Math.min(xStartPixel, xEndPixel); x <= Math.max(xStartPixel, xEndPixel); x++) { |
| | | Geometry point = new Geometry(ogr.wkbPoint); |
| | | point.AddPoint(minX + pixelWidth * x, maxY - pixelHeight * y); |
| | | if (polyline.Contains(point)) { |
| | | for (int i = 1; i <= bandCount; i++) { |
| | | double[] values = new double[1]; |
| | | ds.GetRasterBand(i).ReadRaster(x, y, 1, 1, values); |
| | | list.add(values[0]); |
| | | } |
| | | } |
| | | } |
| | | } |
| | | |
| | | processResult(list, entity); |
| | | } catch (Exception ex) { |
| | | setError(entity, ex.getMessage()); |
| | | log.error(ex.getMessage(), ex); |
| | | } finally { |
| | | // gdal.GDALDestroyDriverManager() |
| | | if (null != ds) { |
| | | ds.delete(); |
| | | } |
| | | } |
| | | } |
| | | |
| | | /** |
| | |
| | | // |
| | | |
| | | return rs; |
| | | } |
| | | |
| | | |
| | | public List<Double> processLine(String imagePath, String geometryString) { |
| | | // 打开栅格图像数据集 |
| | | Dataset dataset = gdal.Open(imagePath); |
| | | if (dataset == null) { |
| | | throw new RuntimeException("Failed to open raster dataset."); |
| | | } |
| | | |
| | | Geometry geometry = Geometry.CreateFromWkt(geometryString); |
| | | |
| | | // 栅格像素范围 |
| | | double[] geoTransform = dataset.GetGeoTransform(); |
| | | double minX = geoTransform[0]; |
| | | double pixelWidth = geoTransform[1]; |
| | | double rotationX = geoTransform[2]; |
| | | double maxY = geoTransform[3]; |
| | | double rotationY = geoTransform[4]; |
| | | double pixelHeight = geoTransform[5]; |
| | | |
| | | // geometry像素范围 |
| | | double[] bounds = new double[6]; |
| | | geometry.GetEnvelope(bounds); |
| | | double startX = bounds[0]; |
| | | double endX = bounds[1]; |
| | | double startY = bounds[2]; |
| | | double endY = bounds[3]; |
| | | |
| | | int xStartPixel = (int) Math.floor((startX - minX) / pixelWidth); |
| | | int ySstartPixel = (int) Math.floor((maxY - startY) / Math.abs(pixelHeight)); |
| | | int xEndPixel = (int) Math.floor((endX - minX) / pixelWidth); |
| | | int yEndPixel = (int) Math.floor((maxY - endY) / Math.abs(pixelHeight)); |
| | | |
| | | List<Double> values = new ArrayList<>(); |
| | | for (int y = Math.min(ySstartPixel, yEndPixel); y <= Math.max(ySstartPixel, yEndPixel); y++) { |
| | | for (int x = Math.min(xStartPixel, xEndPixel); x <= Math.max(xStartPixel, xEndPixel); x++) { |
| | | Geometry point = new Geometry(ogr.wkbPoint); |
| | | point.AddPoint(minX + pixelWidth * x, maxY - pixelHeight * y); |
| | | if (geometry.Contains(point)) { |
| | | values.add(bandValueHandle(dataset, x, y)); |
| | | } |
| | | } |
| | | } |
| | | |
| | | return values; |
| | | } |
| | | |
| | | public double processPolygon(String imagePath, String geometryString) { |
| | |
| | | sum.add(pixelValues); |
| | | } |
| | | |
| | | return average(calculateAverage(sum)); |
| | | return 0; |
| | | } |
| | | |
| | | public static Dataset clipRaster(Dataset dataset, Geometry geometry) { |
| | | Vector<String> warpOptions = new Vector<>(); |
| | | warpOptions.add("-crop_to_cutline"); |
| | | warpOptions.add("-cutline"); |
| | | warpOptions.add(geometry.ExportToWkt()); |
| | | warpOptions.add("-dstalpha"); |
| | | |
| | | return gdal.Warp("", new Dataset[]{dataset}, new WarpOptions(warpOptions)); |
| | | } |
| | | |
| | | public double[] processClippedDataByLine(String imagePath, String geometryString) { |
| | | public void processClippedDataByLine(String imagePath, String geometryString) { |
| | | // 注册GDAL驱动 |
| | | gdal.AllRegister(); |
| | | // 打开栅格图像数据集 |
| | |
| | | |
| | | sum.add(pixelValues); |
| | | } |
| | | |
| | | return calculateAverage(sum); |
| | | } |
| | | |
| | | public double processClippedDataByPolygon(String imagePath, String geometryString) { |
| | | public static Dataset clipRaster(Dataset dataset, Geometry geometry) { |
| | | Vector<String> warpOptions = new Vector<>(); |
| | | warpOptions.add("-crop_to_cutline"); |
| | | warpOptions.add("-cutline"); |
| | | warpOptions.add(geometry.ExportToWkt()); |
| | | warpOptions.add("-dstalpha"); |
| | | |
| | | return gdal.Warp("", new Dataset[]{dataset}, new WarpOptions(warpOptions)); |
| | | } |
| | | |
| | | public void processClippedDataByPolygon(String imagePath, String geometryString) { |
| | | // 注册GDAL驱动 |
| | | gdal.AllRegister(); |
| | | // 打开栅格图像数据集 |
| | |
| | | band.ReadRaster(0, 0, width, height, pixelValues); |
| | | |
| | | // 多波段归一化处理 |
| | | bandSum[bandIndex - 1] = average(pixelValues); |
| | | } |
| | | return average(bandSum); |
| | | } |
| | | |
| | | public static double average(double[] values) { |
| | | double sum = 0; |
| | | for (double value : values) { |
| | | sum += value; |
| | | } |
| | | return sum / values.length; |
| | | } |
| | | |
| | | public static double[] calculateAverage(List<double[]> list) { |
| | | if (list == null || list.isEmpty()) { |
| | | return new double[0]; |
| | | } |
| | | |
| | | int arrayLength = list.get(0).length; |
| | | double[] outArray = new double[arrayLength]; |
| | | |
| | | for (int i = 0; i < arrayLength; i++) { |
| | | double sum = 0; |
| | | |
| | | for (double[] array : list) { |
| | | sum += array[i]; |
| | | } |
| | | |
| | | outArray[i] = sum / list.size(); |
| | | } |
| | | |
| | | return outArray; |
| | | } |
| | | |
| | | public static double bandValueHandle(Dataset dataset, int x, int y) { |
| | | double[] bandSum = new double[dataset.getRasterCount()]; |
| | | for (int bandIndex = 1; bandIndex <= dataset.getRasterCount(); bandIndex++) { |
| | | double[] pixelValues = new double[1]; |
| | | Band band = dataset.GetRasterBand(bandIndex); |
| | | band.ReadRaster(x, y, 1, 1, pixelValues); |
| | | |
| | | bandSum[bandIndex - 1] = pixelValues[0]; |
| | | } |
| | | |
| | | return average(bandSum); |
| | | } |
| | | } |