iArray[i] = getSample(x, y, 0, data);
iArray[i] = getSample(x, y, i, data);
  public int[] getPixel(int x, int y, int[] iArray, DataBuffer data)  {    if (iArray == null) iArray = new int[numBands];    for (int i=0; i < numBands; i++)      iArray[i] = getSample(x, y, 0, data);	    return iArray;  }