@Override
public String getLabel() {
return properties.getLabel()
+ " ("
+ properties.getPeriod()
+ ", "
+ properties.getPeriodK()
+ ", "
+ properties.getPeriodD()
+ ")";
}
@Override
public void paint(Graphics2D g, ChartFrame cf, Rectangle bounds) {
Dataset stoD = visibleDataset(cf, properties.getSF() ? FASTD : SLOWD);
Dataset stoK = visibleDataset(cf, properties.getSF() ? FASTK : SLOWK);
if (stoD != null && stoK != null) {
if (maximized) {
Range range = getRange(cf);
DefaultPainter.line(
g, cf, range, bounds, stoD, properties.getColorD(), properties.getStrokeD());
DefaultPainter.line(
g, cf, range, bounds, stoK, properties.getColorK(), properties.getStrokeK());
}
}
}
@Override
public void paint(Graphics2D g, ChartFrame cf, Rectangle bounds) {
Dataset dataset = visibleDataset(cf, HASHKEY);
if (dataset != null) {
if (maximized) {
Range range = getRange(cf);
DefaultPainter.line(
g,
cf,
range,
bounds,
dataset,
properties.getColor(),
properties.getStroke()); // paint line
}
}
}
@Override
public double[] getValues(ChartFrame cf, int i) {
Dataset stoD = visibleDataset(cf, properties.getSF() ? FASTD : SLOWD);
Dataset stoK = visibleDataset(cf, properties.getSF() ? FASTK : SLOWK);
if (stoD != null && stoK != null) return new double[] {stoD.getCloseAt(i), stoK.getCloseAt(i)};
return new double[] {};
}
@Override
public LinkedHashMap getHTML(ChartFrame cf, int i) {
LinkedHashMap ht = new LinkedHashMap();
DecimalFormat df = new DecimalFormat("#,##0.00");
double[] values = getValues(cf, i);
String[] labels = {"%D:", "%K:"};
ht.put((properties.getSF() ? "Fast" : "Slow") + getLabel(), " ");
if (values.length > 0) {
Color[] colors = getColors();
for (int j = 0; j < values.length; j++) {
ht.put(getFontHTML(colors[j], labels[j]), getFontHTML(colors[j], df.format(values[j])));
}
}
return ht;
}
@Override
public String getLabel() {
return properties.getLabel();
}
@Override
public boolean getMarkerVisibility() {
return properties.getMarker();
}
@Override
public Color[] getColors() {
return new Color[] {properties.getColor()};
}
@Override
public String getPaintedLabel(ChartFrame cf) {
return (properties.getSF() ? "Fast" : "Slow") + getLabel();
}
@Override
public void calculate() {
Dataset initial = getDataset();
int count = 0;
if (initial != null && !initial.isEmpty()) count = initial.getItemsCount();
/** ******************************************************************* */
// This entire method is basically a copy/paste action into your own
// code. The only thing you have to change is the next few lines of code.
// Choose the 'lookback' method and appropriate 'calculation function'
// from TA-Lib for your needs. Everything else should stay basically the
// same
// prepare ta-lib variables
outputFastD = new double[count];
outputFastK = new double[count];
outBegIdx = new MInteger();
outNbElement = new MInteger();
core = TaLibInit.getCore(); // needs to be here for serialization issues
// [your specific indicator variables need to be set first]
periodK = properties.getPeriodK();
periodD = properties.getPeriodD();
period = properties.getPeriod();
// now do the calculation over the entire dataset
// [First, perform the lookback call if one exists]
// [Second, do the calculation call from TA-lib]
lookback = core.stochRsiLookback(period, periodK, periodD, MAType.Sma);
core.stochRsi(
0,
count - 1,
initial.getCloseValues(),
period,
periodK,
periodD,
MAType.Sma,
outBegIdx,
outNbElement,
outputFastK,
outputFastD);
// Everything between the /***/ lines is what needs to be changed.
// Everything else remains the same. You are done with your part now.
/** ******************************************************************* */
// fix the output array's structure. TA-Lib does NOT match
// indicator index and dataset index automatically. That's what
// this function does for us.
outputFastD = TaLibUtilities.fixOutputArray(outputFastD, lookback);
outputFastK = TaLibUtilities.fixOutputArray(outputFastK, lookback);
calculatedDatasetFastD = Dataset.EMPTY(initial.getItemsCount());
for (int i = 0; i < outputFastD.length; i++)
calculatedDatasetFastD.setDataItem(i, new DataItem(initial.getTimeAt(i), outputFastD[i]));
calculatedDatasetFastK = Dataset.EMPTY(initial.getItemsCount());
for (int i = 0; i < outputFastK.length; i++)
calculatedDatasetFastK.setDataItem(i, new DataItem(initial.getTimeAt(i), outputFastK[i]));
addDataset(FASTD, calculatedDatasetFastD);
addDataset(FASTK, calculatedDatasetFastK);
}
@Override
public Stroke getDelimitersStroke() {
return properties.getDelimiterLineStroke();
}
@Override
public Color getDelimitersColor() {
return properties.getDelimiterColor();
}
@Override
public Stroke getZeroLineStroke() {
return properties.getZeroLineStroke();
}
@Override
public Color getZeroLineColor() {
return properties.getZeroLineColor();
}
