Example usage for org.jfree.data.xy DefaultHighLowDataset getCloseValue

Introduction

In this page you can find the example usage for org.jfree.data.xy DefaultHighLowDataset getCloseValue.

Prototype

@Override
public double getCloseValue(int series, int item) 

Source Link

Document

Returns the close-value (as a double primitive) for an item within a series.

Usage

From source file:org.yccheok.jstock.gui.charting.ChartLayerUI.java

private Point2D.Double _getPointForCandlestick(int plotIndex, int seriesIndex, int dataIndex) {
    final ChartPanel chartPanel = this.chartJDialog.getChartPanel();
    final XYPlot plot = this.chartJDialog.getPlot(plotIndex);
    final ValueAxis domainAxis = plot.getDomainAxis();
    final RectangleEdge domainAxisEdge = plot.getDomainAxisEdge();
    final ValueAxis rangeAxis = plot.getRangeAxis();
    final RectangleEdge rangeAxisEdge = plot.getRangeAxisEdge();

    final org.jfree.data.xy.DefaultHighLowDataset defaultHighLowDataset = (org.jfree.data.xy.DefaultHighLowDataset) plot
            .getDataset(seriesIndex);//  w ww.j  a  v  a2  s  . c o m

    if (dataIndex >= defaultHighLowDataset.getItemCount(0)) {
        /* Not ready yet. */
        return null;
    }

    final double xValue = defaultHighLowDataset.getXDate(0, dataIndex).getTime();
    final double yValue = defaultHighLowDataset.getCloseValue(0, dataIndex);
    final Rectangle2D plotArea = chartPanel.getChartRenderingInfo().getPlotInfo().getSubplotInfo(plotIndex)
            .getDataArea();
    final double xJava2D = domainAxis.valueToJava2D(xValue, plotArea, domainAxisEdge);
    final double yJava2D = rangeAxis.valueToJava2D(yValue, plotArea, rangeAxisEdge);
    // Use Double version, to avoid from losing precision.
    return new Point2D.Double(xJava2D, yJava2D);
}

---

From source file:org.yccheok.jstock.gui.charting.ChartJDialog.java

/**
 * Calculate and update high low value labels, according to current displayed
 * time range. This is a time consuming method, and shall be called by
 * user thread.//  w w  w  . ja  va  2  s.c om
 */
private void _updateHighLowJLabels() {
    SwingUtilities.invokeLater(new Runnable() {
        @Override
        public void run() {
            ChartJDialog.this.jLabel2.setText("");
            ChartJDialog.this.jLabel4.setText("");
        }
    });

    final ValueAxis valueAxis = this.getPlot().getDomainAxis();
    final Range range = valueAxis.getRange();
    final long lowerBound = (long) range.getLowerBound();
    final long upperBound = (long) range.getUpperBound();

    // Perform binary search, to located day in price time series, which
    // is equal or lesser than upperBound.
    int low = 0;
    int high = this.priceTimeSeries.getItemCount() - 1;
    long best_dist = Long.MAX_VALUE;
    int best_mid = -1;
    while (low <= high) {
        int mid = (low + high) >>> 1;
        final Day day = (Day) this.priceTimeSeries.getDataItem(mid).getPeriod();
        long v = day.getFirstMillisecond();

        if (v > upperBound) {
            high = mid - 1;
        } else if (v < upperBound) {
            low = mid + 1;
            long dist = upperBound - v;
            if (dist < best_dist) {
                best_dist = dist;
                best_mid = mid;
            }
        } else {
            best_dist = 0;
            best_mid = mid;
            break;
        }
    }

    if (best_mid < 0) {
        return;
    }

    double high_price = -Double.MAX_VALUE;
    double low_price = Double.MAX_VALUE;
    final DefaultHighLowDataset defaultHighLowDataset = (DefaultHighLowDataset) this.priceOHLCDataset;
    for (int i = best_mid; i >= 0; i--) {
        final TimeSeriesDataItem item = this.priceTimeSeries.getDataItem(i);
        final long time = ((Day) item.getPeriod()).getFirstMillisecond();
        if (time < lowerBound) {
            break;
        }

        final double _high_price = defaultHighLowDataset.getHighValue(0, i);
        final double _low_price = defaultHighLowDataset.getLowValue(0, i);
        final double _last_price = defaultHighLowDataset.getCloseValue(0, i);

        high_price = Math.max(high_price, _high_price);

        // Prevent bad data.
        if (_low_price > 0) {
            low_price = Math.min(low_price, _low_price);
        } else {
            if (_high_price > 0) {
                low_price = Math.min(low_price, _high_price);
            }
            if (_last_price > 0) {
                low_price = Math.min(low_price, _last_price);
            }
        }
    }

    final double h = high_price;
    final double l = low_price;
    if (high_price >= low_price) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                ChartJDialog.this.jLabel2.setText(org.yccheok.jstock.gui.Utils.stockPriceDecimalFormat(h));
                ChartJDialog.this.jLabel4.setText(org.yccheok.jstock.gui.Utils.stockPriceDecimalFormat(l));
            }
        });
    }
}

---

From source file:org.yccheok.jstock.gui.charting.ChartLayerUI.java

private boolean _updateMainTraceInfoForCandlestick(Point2D point) {
    if (point == null) {
        return false;
    }/* ww w .j a  va2s.c om*/

    final ChartPanel chartPanel = this.chartJDialog.getChartPanel();
    // Top most plot.
    final XYPlot plot = this.chartJDialog.getPlot();

    final org.jfree.data.xy.DefaultHighLowDataset defaultHighLowDataset = (org.jfree.data.xy.DefaultHighLowDataset) plot
            .getDataset();

    // I also not sure why. This is what are being done in Mouse Listener Demo 4.
    //
    // Don't use it. It will cause us to lose precision.
    //final Point2D p2 = chartPanel.translateScreenToJava2D((Point)point);

    /* Try to get correct main chart area. */
    final Rectangle2D _plotArea = chartPanel.getChartRenderingInfo().getPlotInfo().getSubplotInfo(0)
            .getDataArea();

    final ValueAxis domainAxis = plot.getDomainAxis();
    final RectangleEdge domainAxisEdge = plot.getDomainAxisEdge();
    final ValueAxis rangeAxis = plot.getRangeAxis();
    final RectangleEdge rangeAxisEdge = plot.getRangeAxisEdge();
    // Don't use it. It will cause us to lose precision.
    //final double coordinateX = domainAxis.java2DToValue(p2.getX(), _plotArea,
    //        domainAxisEdge);
    final double coordinateX = domainAxis.java2DToValue(point.getX(), _plotArea, domainAxisEdge);
    //double coordinateY = rangeAxis.java2DToValue(mousePoint2.getY(), plotArea,
    //        rangeAxisEdge);

    int low = 0;
    int high = defaultHighLowDataset.getItemCount(0) - 1;
    Date date = new Date((long) coordinateX);
    final long time = date.getTime();
    long bestDistance = Long.MAX_VALUE;
    int bestMid = 0;

    while (low <= high) {
        int mid = (low + high) >>> 1;

        final Date d = defaultHighLowDataset.getXDate(0, mid);
        final long search = d.getTime();
        final long cmp = search - time;

        if (cmp < 0) {
            low = mid + 1;
        } else if (cmp > 0) {
            high = mid - 1;
        } else {
            bestDistance = 0;
            bestMid = mid;
            break;
        }

        final long abs_cmp = Math.abs(cmp);
        if (abs_cmp < bestDistance) {
            bestDistance = abs_cmp;
            bestMid = mid;
        }
    }

    final double xValue = defaultHighLowDataset.getXDate(0, bestMid).getTime();
    final double yValue = defaultHighLowDataset.getCloseValue(0, bestMid);
    final double xJava2D = domainAxis.valueToJava2D(xValue, _plotArea, domainAxisEdge);
    final double yJava2D = rangeAxis.valueToJava2D(yValue, _plotArea, rangeAxisEdge);

    final int tmpIndex = bestMid;
    // translateJava2DToScreen will internally convert Point2D.Double to Point.
    final Point2D tmpPoint = chartPanel.translateJava2DToScreen(new Point2D.Double(xJava2D, yJava2D));
    this.mainDrawArea.setRect(_plotArea);

    if (this.mainDrawArea.contains(tmpPoint)) {
        // 0 indicates main plot.
        this.mainTraceInfo = TraceInfo.newInstance(tmpPoint, 0, 0, tmpIndex);
        return true;
    }
    return false;
}

---