本文整理了Java中javax.media.jai.iterator.RandomIter.getSampleDouble方法的一些代码示例，展示了RandomIter.getSampleDouble的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。RandomIter.getSampleDouble方法的具体详情如下：
包路径：javax.media.jai.iterator.RandomIter
类名称：RandomIter
方法名：getSampleDouble

RandomIter.getSampleDouble介绍

暂无

代码示例

代码示例来源：origin: geotools/geotools

public double getSampleDouble(int x, int y, int b) {
  return delegate.getSampleDouble(x, y, b);
}

代码示例来源：origin: geotools/geotools

double value = iter.getSampleDouble(x, y, 0);
if (!Double.isNaN(value)) {

代码示例来源：origin: geotools/geotools

for (int i = 0; i < dataWindowRows; i++) {
  for (int j = 0; j < dataWindowCols; j++) {
    double value = iterator.getSampleDouble(j, i, 0);

代码示例来源：origin: geotools/geotools

int col = (tileX * tileWidth) + tcol;
if ((col >= minX) && (col <= maxX)) {
  double value = iter.getSampleDouble(col, row, 0);
  if (!bitSet.get(col - minX, row - minY)
      && !Double.isNaN(value)) {

代码示例来源：origin: org.integratedmodelling/klab-engine

public double getDouble(int x, int y) {
  return itera.getSampleDouble(x, y, 0);
}

代码示例来源：origin: org.integratedmodelling/klab-engine

@Override
public Object getValue(int contextIndex) {
  int[] xy = _grid.getXYOffsets(contextIndex);
  return _itera.getSampleDouble(xy[0], xy[1], 0);
}

代码示例来源：origin: org.jaitools/jt-utils

/**
 * Fills the region connected to the specified start pixel.
 * A pixel belongs to this region if there is a path between it and the starting
 * pixel which passes only through pixels of value {@code v} within the range
 * {@code start_pixel_value - tolerance <= v <= start_pixel_value + tolerance}.
 *
 * @param x start pixel x coordinate
 *
 * @param y start pixel y coordinate
 *
 * @param fillValue the value to write to the destination image for this region
 *
 * @return a new {@linkplain FillResult}
 */
public FillResult fill(int x, int y, int fillValue) {
  return fill(x, y, fillValue, srcIter.getSampleDouble(x, y, srcBand));
}

代码示例来源：origin: com.googlecode.jaitools/jt-utils

/**
 * Fills the region connected to the specified start pixel.
 * A pixel belongs to this region if there is a path between it and the starting
 * pixel which passes only through pixels of value {@code v} within the range
 * {@code start_pixel_value - tolerance <= v <= start_pixel_value + tolerance}.
 *
 * @param x start pixel x coordinate
 *
 * @param y start pixel y coordinate
 *
 * @param fillValue the value to write to the destination image for this region
 *
 * @return a new {@linkplain FillResult}
 */
public FillResult fill(int x, int y, int fillValue) {
  return fill(x, y, fillValue, srcIter.getSampleDouble(x, y, srcBand));
}

代码示例来源：origin: org.jaitools/jt-utils

/**
 * Fills the region connected to the specified start pixel and lying within
 * {@code radius} pixels of the start pixel.
 * <p>
 * A pixel belongs to this region if there is a path between it and the starting
 * pixel which passes only through pixels of value {@code v} within the range
 * {@code start_pixel_value - tolerance <= v <= start_pixel_value + tolerance}.
 *
 * @param x start pixel x coordinate
 *
 * @param y start pixel y coordinate
 *
 * @param fillValue the value to write to the destination image for this region
 *
 * @param radius maximum distance (pixels) that a candidate pixel can be from
 *        the start pixel
 *
 * @return a new {@linkplain FillResult}
 */
public FillResult fillRadius(int x, int y, int fillValue, double radius) {
  return fillRadius(x, y, fillValue, srcIter.getSampleDouble(x, y, srcBand), radius);
}

代码示例来源：origin: com.googlecode.jaitools/jt-utils

/**
 * Fills the region connected to the specified start pixel and lying within
 * {@code radius} pixels of the start pixel.
 * <p>
 * A pixel belongs to this region if there is a path between it and the starting
 * pixel which passes only through pixels of value {@code v} within the range
 * {@code start_pixel_value - tolerance <= v <= start_pixel_value + tolerance}.
 *
 * @param x start pixel x coordinate
 *
 * @param y start pixel y coordinate
 *
 * @param fillValue the value to write to the destination image for this region
 *
 * @param radius maximum distance (pixels) that a candidate pixel can be from
 *        the start pixel
 *
 * @return a new {@linkplain FillResult}
 */
public FillResult fillRadius(int x, int y, int fillValue, double radius) {
  return fillRadius(x, y, fillValue, srcIter.getSampleDouble(x, y, srcBand), radius);
}

代码示例来源：origin: com.googlecode.jaitools/jt-utils

double val = srcIter.getSampleDouble(x, y, srcBand);
return CompareOp.acompare(Math.abs(val - refValue), tolerance) <= 0;

代码示例来源：origin: geotools/geotools

for (int j = 0; j < kheight; j++) {
  for (int i = 0; i < kwidth; i++) {
    samples[j][i] = iter.getSampleDouble(xint + i, yint + j, b);

代码示例来源：origin: org.integratedmodelling/klab-engine

public static int countNodata(GridCoverage2D layer, IDirectObservation context) throws KlabException {
  SpaceExtent ext = (SpaceExtent) context.getScale().getSpace();
  if (ext.getGrid() == null) {
    throw new KlabValidationException("cannot return a raster layer from a non-grid extent");
  }
  Grid grid = ext.getGrid();
  RenderedImage image = layer.getRenderedImage();
  RandomIter itera = RandomIterFactory.create(image, null);
  int nodata = 0;
  for (int i = 0; i < grid.getCellCount(); i++) {
    int[] xy = grid.getXYOffsets(i);
    double d = itera.getSampleDouble(xy[0], xy[1], 0);
    if (Double.isNaN(d)) {
      nodata ++;
    }
  }
  return nodata;
}

代码示例来源：origin: geosolutions-it/jai-ext

/** Method for testing the selected input RandomIter on a Double image */
public void testRandomIterDouble(RenderedImage img, double[] valueArray, boolean cachedTiles,
    boolean arrayCalculation) {
  RandomIter iter = RandomIterFactory.create(img, null, cachedTiles, arrayCalculation);
  double[] array = new double[3];
  // Store of the image data calculated
  for (int i = 0; i < indexArray.length; i++) {
    int x = indexArray[i][0];
    int y = indexArray[i][1];
    double valueExpected = iter.getSampleDouble(x, y, 0);
    assertEquals(valueExpected, valueArray[i], DELTA);
    double valueExpectedArray = iter.getPixel(x, y, array)[0];
    assertEquals(valueExpectedArray, valueArray[i], DELTA);
  }
}

代码示例来源：origin: org.integratedmodelling/klab-engine

double value = itera.getSampleDouble(xy[0], xy[1], 0);
States.set(ret, transformation == null ? value : transformation.apply(value), i);

代码示例来源：origin: geosolutions-it/jai-ext

private void assertCopy(RenderedImage src, RenderedOp op, int dataType) {
  // check it's a copy with the expected values
  assertEquals(src.getMinX(), op.getMinX());
  assertEquals(src.getWidth(), op.getWidth());
  assertEquals(src.getMinY(), op.getMinY());
  assertEquals(src.getHeight(), op.getHeight());
  assertEquals(dataType, op.getSampleModel().getDataType());
  RandomIter srcIter = RandomIterFactory.create(src, null);
  RandomIter opIter = RandomIterFactory.create(op, null);
  for(int y = src.getMinY(); y < src.getMinY() + src.getHeight(); y++) {
    for(int x = src.getMinX(); x < src.getMinX() + src.getWidth(); x++) {
      double expected = srcIter.getSampleDouble(x, y, 0);
      double actual = opIter.getSampleDouble(x, y, 0);
      assertEquals(expected, actual, 0d);
    }
  }
}

代码示例来源：origin: org.integratedmodelling/klab-engine

public static IGridMask rasterizeShapes(Collection<ShapeValue> shapes, IGrid grid, int value) throws KlabException {
  if (grid.getXCells() * grid.getYCells() < 16) {
    return new DummyActivationLayer(grid);
  }
  RasterActivationLayer ret = (RasterActivationLayer) createMask(grid);
  GridCoverage2D coverage = null;
  ret.deactivate();
  FeatureRasterizer rasterizer = new FeatureRasterizer(grid, 0.0f, null, null);
  coverage = rasterizer.rasterize(shapes, value);
  /*
   * turn coverage into mask
   */
  RenderedImage image = coverage.getRenderedImage();
  RandomIter itera = RandomIterFactory.create(image, null);
  for (int i = 0; i < grid.getCellCount(); i++) {
    int[] xy = grid.getXYOffsets(i);
    if (itera.getSampleDouble(xy[0], xy[1], 0) > 0.0) {
      ret.activate(xy[0], xy[1]);
    }
  }
  return ret;
}

代码示例来源：origin: org.integratedmodelling/klab-engine

/**
 * Get a static state built from the passed layer. Do not add to a context.
 * 
 * @param layer
 * @param observable
 * @param context
 * @param label
 * @return state
 * @throws KlabException
 */
public static IState coverageToState(GridCoverage2D layer, IObservableSemantics observable, IContext context, String label, Function<Double, Double> transformation )
    throws KlabException {
  SpaceExtent ext = (SpaceExtent) context.getSubject().getScale().getSpace();
  if (ext.getGrid() == null) {
    throw new KlabValidationException("cannot return a raster layer from a non-grid extent");
  }
  Grid grid = ext.getGrid();
  RenderedImage image = layer.getRenderedImage();
  RandomIter itera = RandomIterFactory.create(image, null);
  IState ret = States.createStatic(observable, context.getSubject().getScale(), context);
  
  for (int i = 0; i < grid.getCellCount(); i++) {
    int[] xy = grid.getXYOffsets(i);
    double value = itera.getSampleDouble(xy[0], xy[1], 0);
    States.set(ret, transformation == null ? value : transformation.apply(value), i);
  }
  ret.getMetadata().put(NS.DISPLAY_LABEL_PROPERTY, label);
  return ret;
}

代码示例来源：origin: org.integratedmodelling/klab-engine

private static IGridMask rasterizeShape(ShapeValue shape, IGrid grid, int value) throws KlabException {
  if (grid.getXCells() * grid.getYCells() < 16) {
    return new DummyActivationLayer(grid);
  }
  RasterActivationLayer ret = (RasterActivationLayer) createMask(grid);
  GridCoverage2D coverage = null;
  ret.deactivate();
  FeatureRasterizer rasterizer = new FeatureRasterizer(grid, 0.0f, null, null);
  coverage = rasterizer.rasterize(shape, value);
  /*
   * turn coverage into mask
   */
  RenderedImage image = coverage.getRenderedImage();
  RandomIter itera = RandomIterFactory.create(image, null);
  for (int i = 0; i < grid.getCellCount(); i++) {
    int[] xy = grid.getXYOffsets(i);
    if (itera.getSampleDouble(xy[0], xy[1], 0) > 0.0) {
      ret.activate(xy[0], xy[1]);
    }
  }
  return ret;
}

代码示例来源：origin: geosolutions-it/jai-ext

@Test
public void testSum() {
  RenderedImage src1 = buildTestImage(10, 10);
  RenderedImage src2 = buildTestImage(10, 10);
  RenderedOp op = JiffleDescriptor.create(new RenderedImage[] {src1, src2}, new String[] {"a", "b"}, "res",
      "res = a + b;", null, DataBuffer.TYPE_INT, null, null, null);
  // check same size and expected 
  assertEquals(src1.getMinX(), op.getMinX());
  assertEquals(src1.getWidth(), op.getWidth());
  assertEquals(src1.getMinY(), op.getMinY());
  assertEquals(src1.getHeight(), op.getHeight());
  assertEquals(DataBuffer.TYPE_INT, op.getSampleModel().getDataType());
  RandomIter srcIter = RandomIterFactory.create(src1, null);
  RandomIter opIter = RandomIterFactory.create(op, null);
  for(int y = src1.getMinY(); y < src1.getMinY() + src1.getHeight(); y++) {
    for(int x = src1.getMinX(); x < src1.getMinX() + src1.getWidth(); x++) {
      double expected = srcIter.getSampleDouble(x, y, 0) * 2;
      double actual = opIter.getSampleDouble(x, y, 0);
      assertEquals(expected, actual, 0d);
    }
  }
}