public void computeLatLonBandData(
int height,
int width,
Band latBand,
Band lonBand,
final float[] latRawData,
final float[] lonRawData,
final int[] colPoints) {
float[] latFloats = new float[height * width];
float[] lonFloats = new float[height * width];
final int rawWidth = colPoints.length;
int colPointIdx = 0;
int p1 = colPoints[colPointIdx] - 1;
int p2 = colPoints[++colPointIdx] - 1;
for (int x = 0; x < width; x++) {
if (x == p2 && colPointIdx < rawWidth - 1) {
p1 = p2;
p2 = colPoints[++colPointIdx] - 1;
}
final int steps = p2 - p1;
final double step = 1.0 / steps;
final double weight = step * (x - p1);
for (int y = 0; y < height; y++) {
final int rawPos2 = y * rawWidth + colPointIdx;
final int rawPos1 = rawPos2 - 1;
final int pos = y * width + x;
latFloats[pos] = computeGeoPixel(latRawData[rawPos1], latRawData[rawPos2], weight);
lonFloats[pos] = computeGeoPixel(lonRawData[rawPos1], lonRawData[rawPos2], weight);
}
}
latBand.setDataElems(latFloats);
lonBand.setDataElems(lonFloats);
}
public static Product createDummySourceProduct(int width, int height) {
Product product = new Product("dummy", "dummy", width, height);
Band b = product.addBand("b1", ProductData.TYPE_FLOAT32);
float[] bData = new float[width * height];
for (int i = 0; i < width; i++) {
for (int j = 0; j < height; j++) {
bData[i * width + j] = 1.0f;
}
}
b.setDataElems(bData);
product.setPreferredTileSize(product.getSceneRasterWidth(), 45);
return product;
}
// Don't do this...it hurts. Too much of a memory hog...
private void addBandsBinMap(Product product) throws IOException, InvalidRangeException {
String[] bandList = product.getBandNames();
if (rowInfo == null) {
rowInfo = createRowInfos();
}
final int height = sceneHeight;
final int width = sceneWidth;
final ISINGrid grid = this.grid;
// loop over lines
try {
int[] lineOffsets = new int[1];
int[] lineLengths = new int[1];
int[] stride = new int[1];
stride[0] = 1;
// for (int y = sourceOffsetY; y < sourceOffsetY + sourceHeight; y++) {
for (String name : bandList) {
if (name.endsWith("mean") || name.endsWith("stdev")) continue;
Band band = product.getBand(name);
ProductData buffer;
final Variable variable = variableMap.get(band);
DataType prodtype = variable.getDataType();
float[] fbuffer = new float[width * height];
short[] sbuffer = new short[width * height];
int[] ibuffer = new int[width * height];
byte[] bbuffer = new byte[width * height];
if (prodtype == DataType.FLOAT) {
Arrays.fill(fbuffer, Float.NaN);
buffer = ProductData.createInstance(fbuffer);
} else if (prodtype == DataType.SHORT) {
Arrays.fill(sbuffer, (short) -999);
buffer = ProductData.createInstance(sbuffer);
} else if (prodtype == DataType.BYTE) {
Arrays.fill(bbuffer, (byte) 255);
buffer = ProductData.createInstance(bbuffer);
} else {
Arrays.fill(ibuffer, -999);
buffer = ProductData.createInstance(ibuffer);
}
for (int y = 0; y < height; y++) {
final int rowIndex = (height - 1) - y;
final RowInfo rowInfo = this.rowInfo[rowIndex];
if (rowInfo != null) {
final Array bindata;
final int lineOffset = rowInfo.offset;
final int lineLength = rowInfo.length;
lineOffsets[0] = lineOffset;
lineLengths[0] = lineLength;
synchronized (ncFile) {
bindata =
variable
.read()
.section(lineOffsets, lineLengths, stride); // .copyTo1DJavaArray();
}
int lineIndex0 = 0;
for (int x = 0; x < width; x++) {
final double lon = x * 360.0 / width;
final int binIndex = grid.getBinIndex(rowIndex, lon);
int lineIndex = -1;
for (int i = lineIndex0; i < lineLength; i++) {
int binidx = bins[lineOffset + i];
if (binidx >= binIndex) {
if (binidx == binIndex) {
lineIndex = i;
}
lineIndex0 = i;
break;
}
}
if (lineIndex >= 0) {
final int rasterIndex = width * y + x;
final Array elem;
elem = Array.factory(bindata.copyTo1DJavaArray());
for (int i = 0; i < elem.getSize(); i++) {
if (prodtype == DataType.FLOAT) {
buffer.setElemFloatAt(rasterIndex, elem.getFloat(i));
} else {
buffer.setElemIntAt(rasterIndex, elem.getInt(i));
}
// System.arraycopy(bindata, lineIndex, buffer,
// rasterIndex, 1);
}
}
}
}
}
band.setDataElems(buffer);
}
} catch (IOException e) {
throw new IOException("Could not map product " + product.getName(), e);
}
}