/*
* (non-Javadoc)
* @see org.gvsig.raster.driver.datasetproperties.IHistogramable#getHistogram()
*/
public Histogram getHistogram() throws InterruptedException {
RasterTask task = RasterTaskQueue.get(Thread.currentThread().toString());
progressHistogram = 0;
Histogram hist = null;
double[][] limits = getAllBandsLimits();
hist = new Histogram(getBandCount(), limits[0], limits[1], getDataType());
for (int iBand = 0; iBand < getBandCount(); iBand++) {
for (int row = 0; row < getHeight(); row++) {
switch (getDataType()) {
case IBuffer.TYPE_BYTE:
for (int col = 0; col < getWidth(); col++)
hist.incrementPxValue(iBand, (double) (getElemByte(row, col, iBand)));
break;
case IBuffer.TYPE_SHORT:
for (int col = 0; col < getWidth(); col++)
hist.incrementPxValue(iBand, (double) (getElemShort(row, col, iBand)));
break;
case IBuffer.TYPE_INT:
for (int col = 0; col < getWidth(); col++)
hist.incrementPxValue(iBand, (double) (getElemInt(row, col, iBand)));
break;
case IBuffer.TYPE_FLOAT:
for (int col = 0; col < getWidth(); col++)
hist.incrementPxValue(iBand, (double) getElemFloat(row, col, iBand));
break;
case IBuffer.TYPE_DOUBLE:
for (int col = 0; col < getWidth(); col++)
hist.incrementPxValue(iBand, getElemDouble(row, col, iBand));
break;
}
if (task.getEvent() != null) task.manageEvent(task.getEvent());
progressHistogram = ((iBand * getHeight() + row) * 100) / (getHeight() * getBandCount());
}
}
progressHistogram = 100;
return hist;
}
/*
* (non-Javadoc)
* @see org.gvsig.raster.dataset.IBuffer#getLimits()
*/
public double[] getLimits() throws InterruptedException {
RasterTask task = RasterTaskQueue.get(Thread.currentThread().toString());
double max = Double.NEGATIVE_INFINITY;
double secondMax = max;
double min = Double.MAX_VALUE;
double secondMin = min;
double value = 0;
switch (getDataType()) {
case IBuffer.TYPE_BYTE:
for (int i = 0; i < getBandCount(); i++)
for (int r = 0; r < getHeight(); r++) {
for (int c = 0; c < getWidth(); c++) {
value = (double) ((getElemByte(r, c, i)));
if (value > max) {
if (max != value) secondMax = max;
max = value;
}
if (value < min) {
if (min != value) secondMin = min;
min = value;
}
}
if (task.getEvent() != null) task.manageEvent(task.getEvent());
}
break;
case IBuffer.TYPE_SHORT:
for (int i = 0; i < getBandCount(); i++)
for (int r = 0; r < getHeight(); r++) {
for (int c = 0; c < getWidth(); c++) {
value = (double) getElemShort(r, c, i);
if (value > max) {
if (max != value) secondMax = max;
max = value;
}
if (value < min) {
if (min != value) secondMin = min;
min = value;
}
}
if (task.getEvent() != null) task.manageEvent(task.getEvent());
}
break;
case IBuffer.TYPE_INT:
for (int i = 0; i < getBandCount(); i++)
for (int r = 0; r < getHeight(); r++) {
for (int c = 0; c < getWidth(); c++) {
value = (double) getElemInt(r, c, i);
if (value > max) {
if (max != value) secondMax = max;
max = value;
}
if (value < min) {
if (min != value) secondMin = min;
min = value;
}
}
if (task.getEvent() != null) task.manageEvent(task.getEvent());
}
break;
case IBuffer.TYPE_FLOAT:
for (int i = 0; i < getBandCount(); i++)
for (int r = 0; r < getHeight(); r++) {
for (int c = 0; c < getWidth(); c++) {
value = (double) getElemFloat(r, c, i);
if (value > max) {
if (max != value) secondMax = max;
max = value;
}
if (value < min) {
if (min != value) secondMin = min;
min = value;
}
}
if (task.getEvent() != null) task.manageEvent(task.getEvent());
}
break;
case IBuffer.TYPE_DOUBLE:
for (int i = 0; i < getBandCount(); i++)
for (int r = 0; r < getHeight(); r++) {
for (int c = 0; c < getWidth(); c++) {
value = getElemDouble(r, c, i);
if (value > max) {
if (max != value) secondMax = max;
max = value;
}
if (value < min) {
if (min != value) secondMin = min;
min = value;
}
}
if (task.getEvent() != null) task.manageEvent(task.getEvent());
}
break;
}
// Si no existe un secondMax lo igualo al maximo existente
if (secondMax == Double.NEGATIVE_INFINITY) secondMax = max;
// Si no existe un secondMin lo igualo al minimo existente
if (secondMin == Double.MAX_VALUE) secondMin = min;
double[] values = new double[4];
values[0] = min;
values[1] = max;
values[2] = secondMin;
values[3] = secondMax;
return values;
}
/*
* (non-Javadoc)
* @see org.gvsig.raster.dataset.IBuffer#getLimits()
*/
private double[][] getAllBandsLimits() throws InterruptedException {
RasterTask task = RasterTaskQueue.get(Thread.currentThread().toString());
double max[] = new double[getBandCount()];
double min[] = new double[getBandCount()];
double value = 0;
for (int i = 0; i < getBandCount(); i++) {
max[i] = Double.NEGATIVE_INFINITY;
min[i] = Double.MAX_VALUE;
}
switch (getDataType()) {
case IBuffer.TYPE_BYTE:
for (int i = 0; i < getBandCount(); i++) {
for (int r = 0; r < getHeight(); r++) {
for (int c = 0; c < getWidth(); c++) {
value = (double) ((getElemByte(r, c, i)));
if (value > max[i]) max[i] = value;
if (value < min[i]) min[i] = value;
}
if (task.getEvent() != null) task.manageEvent(task.getEvent());
}
}
break;
case IBuffer.TYPE_SHORT:
for (int i = 0; i < getBandCount(); i++) {
for (int r = 0; r < getHeight(); r++) {
for (int c = 0; c < getWidth(); c++) {
value = (double) getElemShort(r, c, i);
if (value > max[i]) max[i] = value;
if (value < min[i]) min[i] = value;
}
if (task.getEvent() != null) task.manageEvent(task.getEvent());
}
}
break;
case IBuffer.TYPE_INT:
for (int i = 0; i < getBandCount(); i++) {
for (int r = 0; r < getHeight(); r++) {
for (int c = 0; c < getWidth(); c++) {
value = (double) getElemInt(r, c, i);
if (value > max[i]) max[i] = value;
if (value < min[i]) min[i] = value;
}
if (task.getEvent() != null) task.manageEvent(task.getEvent());
}
}
break;
case IBuffer.TYPE_FLOAT:
for (int i = 0; i < getBandCount(); i++) {
for (int r = 0; r < getHeight(); r++) {
for (int c = 0; c < getWidth(); c++) {
value = (double) getElemFloat(r, c, i);
if (value > max[i]) max[i] = value;
if (value < min[i]) min[i] = value;
}
if (task.getEvent() != null) task.manageEvent(task.getEvent());
}
}
break;
case IBuffer.TYPE_DOUBLE:
for (int i = 0; i < getBandCount(); i++) {
for (int r = 0; r < getHeight(); r++) {
for (int c = 0; c < getWidth(); c++) {
value = getElemDouble(r, c, i);
if (value > max[i]) max[i] = value;
if (value < min[i]) min[i] = value;
}
if (task.getEvent() != null) task.manageEvent(task.getEvent());
}
}
break;
}
double[][] values = new double[2][getBandCount()];
for (int i = 0; i < getBandCount(); i++) {
values[0][i] = min[i];
values[1][i] = max[i];
}
return values;
}
/**
* Un evento de cancelado es enviado a la tarea cuando actionCanceled es activado. Para ello se
* creará un objeto CancelEvent y se asignará a la tarea en ejecución. Esta lo procesará cuando
* pueda e interrumpirá el proceso.
*/
public void actionCanceled(IncrementableEvent e) {
if (cancellable) rasterTask.setEvent(new CancelEvent(this));
}