Examples of org.jfree.data.xy.XYDataset

org.jfree.data.xy.XYDataset
An interface through which data in the form of (x, y) items can be accessed.

     * Some checks for the getLegendItems() method.
     */
    public void testGetLegendItems() {
        // check the case where there is a secondary dataset that doesn't
        // have a renderer (i.e. falls back to renderer 0)
        XYDataset d0 = createDataset1();
        XYDataset d1 = createDataset2();
        XYItemRenderer r0 = new XYLineAndShapeRenderer();
        XYPlot plot = new XYPlot();
        plot.setDataset(0, d0);
        plot.setDataset(1, d1);
        plot.setRenderer(0, r0);

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    /**
     * Some tests for the getDomainAxisForDataset() method.
     */
    public void testGetDomainAxisForDataset() {
        XYDataset dataset = new XYSeriesCollection();
        NumberAxis xAxis = new NumberAxis("X");
        NumberAxis yAxis = new NumberAxis("Y");
        XYItemRenderer renderer = new DefaultXYItemRenderer();
        XYPlot plot = new XYPlot(dataset, xAxis, yAxis, renderer);
        assertEquals(xAxis, plot.getDomainAxisForDataset(0));

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    /**
     * Some tests for the getRangeAxisForDataset() method.
     */
    public void testGetRangeAxisForDataset() {
        XYDataset dataset = new XYSeriesCollection();
        NumberAxis xAxis = new NumberAxis("X");
        NumberAxis yAxis = new NumberAxis("Y");
        XYItemRenderer renderer = new DefaultXYItemRenderer();
        XYPlot plot = new XYPlot(dataset, xAxis, yAxis, renderer);
        assertEquals(yAxis, plot.getRangeAxisForDataset(0));

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     * @see #setDataset(int, XYDataset)
     *
     * @since 1.0.14
     */
    public XYDataset getDataset(int index) {
        XYDataset result = null;
        if (index < this.datasets.size()) {
            result = (XYDataset) this.datasets.get(index);
        }
        return result;
    }

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     * @see #getDataset(int)
     *
     * @since 1.0.14
     */
    public void setDataset(int index, XYDataset dataset) {
        XYDataset existing = getDataset(index);
        if (existing != null) {
            existing.removeChangeListener(this);
        }
        this.datasets.set(index, dataset);
        if (dataset != null) {
            dataset.addChangeListener(this);
        }

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        // now get the data and plot it (the visual representation will depend
        // on the m_Renderer that has been set)...
        boolean hasData = false;
        int datasetCount = this.datasets.size();
        for (int i = datasetCount - 1; i >= 0; i--) {
            XYDataset dataset = getDataset(i);
            if (dataset == null) {
                continue;
            }
            PolarItemRenderer renderer = getRenderer(i);
            if (renderer == null) {
                continue;
            }
            if (!DatasetUtilities.isEmptyOrNull(dataset)) {
                hasData = true;
                int seriesCount = dataset.getSeriesCount();
                for (int series = 0; series < seriesCount; series++) {
                    renderer.drawSeries(g2, dataArea, info, this, dataset,
                            series);
                }
            }

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        // of the ranges.
        Iterator iterator = mappedDatasets.iterator();
        int datasetIdx = -1;
        while (iterator.hasNext()) {
            datasetIdx++;
            XYDataset d = (XYDataset) iterator.next();
            if (d != null) {
                // FIXME better ask the renderer instead of DatasetUtilities
                result = Range.combine(result,
                        DatasetUtilities.findRangeBounds(d));
            }

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            return this.fixedLegendItems;
        }
        LegendItemCollection result = new LegendItemCollection();
        int count = this.datasets.size();
        for (int datasetIndex = 0; datasetIndex < count; datasetIndex++) {
            XYDataset dataset = getDataset(datasetIndex);
            PolarItemRenderer renderer = getRenderer(datasetIndex);
            if (dataset != null && renderer != null) {
                int seriesCount = dataset.getSeriesCount();
                for (int i = 0; i < seriesCount; i++) {
                    LegendItem item = renderer.getLegendItem(i);
                    result.add(item);
                }
            }

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        }


        // the datasets are not cloned, but listeners need to be added...
        clone.datasets = (ObjectList) ObjectUtilities.clone(this.datasets);
        for (int i = 0; i < clone.datasets.size(); ++i) {
            XYDataset d = getDataset(i);
            if (d != null) {
                d.addChangeListener(clone);
            }
        }


        clone.renderers = (ObjectList) ObjectUtilities.clone(this.renderers);
        for (int i = 0; i < this.renderers.size(); i++) {

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     * @deprecated Since 1.0.14, grab a reference to the dataset and check
     *     the series count directly.
     */
    public int getSeriesCount() {
        int result = 0;
        XYDataset dataset = getDataset(0);
        if (dataset != null) {
            result = dataset.getSeriesCount();
        }
        return result;
    }

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