Examples of org.jfree.data.category.CategoryDataset

org.jfree.data.category.CategoryDataset
The interface for a dataset with one or more series, and values associated with categories.
The categories are represented by Comparable instance, with the category label being provided by the toString method.

     * @param rangeAxis  the range axis.
     */
    public void draw(Graphics2D g2, CategoryPlot plot, Rectangle2D dataArea,
                     CategoryAxis domainAxis, ValueAxis rangeAxis) {


        CategoryDataset dataset = plot.getDataset();
        int catIndex1 = dataset.getColumnIndex(this.category1);
        int catIndex2 = dataset.getColumnIndex(this.category2);
        int catCount = dataset.getColumnCount();


        double lineX1 = 0.0f;
        double lineY1 = 0.0f;
        double lineX2 = 0.0f;
        double lineY2 = 0.0f;

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     * @return The dataset (possibly <code>null</code>).
     *
     * @see #setDataset(int, CategoryDataset)
     */
    public CategoryDataset getDataset(int index) {
        CategoryDataset result = null;
        if (this.datasets.size() > index) {
            result = (CategoryDataset) this.datasets.get(index);
        }
        return result;
    }

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     *
     * @see #getDataset(int)
     */
    public void setDataset(int index, CategoryDataset dataset) {


        CategoryDataset existing = (CategoryDataset) this.datasets.get(index);
        if (existing != null) {
            existing.removeChangeListener(this);
        }
        this.datasets.set(index, dataset);
        if (dataset != null) {
            dataset.addChangeListener(this);
        }

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        }
        LegendItemCollection result = new LegendItemCollection();
        // get the legend items for the datasets...
        int count = this.datasets.size();
        for (int datasetIndex = 0; datasetIndex < count; datasetIndex++) {
            CategoryDataset dataset = getDataset(datasetIndex);
            if (dataset != null) {
                CategoryItemRenderer renderer = getRenderer(datasetIndex);
                if (renderer != null) {
                    result.addAll(renderer.getLegendItems());
                }

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     */
    public boolean render(Graphics2D g2, Rectangle2D dataArea, int index,
            PlotRenderingInfo info, CategoryCrosshairState crosshairState) {


        boolean foundData = false;
        CategoryDataset currentDataset = getDataset(index);
        CategoryItemRenderer renderer = getRenderer(index);
        CategoryAxis domainAxis = getDomainAxisForDataset(index);
        ValueAxis rangeAxis = getRangeAxisForDataset(index);
        boolean hasData = !DatasetUtilities.isEmptyOrNull(currentDataset);
        if (hasData && renderer != null) {


            foundData = true;
            CategoryItemRendererState state = renderer.initialise(g2, dataArea,
                    this, index, info);
            state.setCrosshairState(crosshairState);
            int columnCount = currentDataset.getColumnCount();
            int rowCount = currentDataset.getRowCount();
            int passCount = renderer.getPassCount();
            for (int pass = 0; pass < passCount; pass++) {
                if (this.columnRenderingOrder == SortOrder.ASCENDING) {
                    for (int column = 0; column < columnCount; column++) {
                        if (this.rowRenderingOrder == SortOrder.ASCENDING) {

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        if (!isDomainGridlinesVisible()) {
            return;
        }
        CategoryAnchor anchor = getDomainGridlinePosition();
        RectangleEdge domainAxisEdge = getDomainAxisEdge();
        CategoryDataset dataset = getDataset();
        if (dataset == null) {
            return;
        }
        CategoryAxis axis = getDomainAxis();
        if (axis != null) {
            int columnCount = dataset.getColumnCount();
            for (int c = 0; c < columnCount; c++) {
                double xx = axis.getCategoryJava2DCoordinate(anchor, c,
                        columnCount, dataArea, domainAxisEdge);
                CategoryItemRenderer renderer1 = getRenderer();
                if (renderer1 != null) {

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    protected void drawDomainCrosshair(Graphics2D g2, Rectangle2D dataArea,
            PlotOrientation orientation, int datasetIndex,
            Comparable rowKey, Comparable columnKey, Stroke stroke,
            Paint paint) {


        CategoryDataset dataset = getDataset(datasetIndex);
        CategoryAxis axis = getDomainAxisForDataset(datasetIndex);
        CategoryItemRenderer renderer = getRenderer(datasetIndex);
        Line2D line = null;
        if (orientation == PlotOrientation.VERTICAL) {
            double xx = renderer.getItemMiddle(rowKey, columnKey, dataset, axis,

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        // iterate through the datasets that map to the axis and get the union
        // of the ranges.
        Iterator iterator = mappedDatasets.iterator();
        while (iterator.hasNext()) {
            CategoryDataset d = (CategoryDataset) iterator.next();
            CategoryItemRenderer r = getRendererForDataset(d);
            if (r != null) {
                result = Range.combine(result, r.findRangeBounds(d));
            }
        }

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        Integer key = new Integer(axisIndex);
        List result = new ArrayList();
        for (int i = 0; i < this.datasets.size(); i++) {
            List mappedAxes = (List) this.datasetToDomainAxesMap.get(
                    new Integer(i));
            CategoryDataset dataset = (CategoryDataset) this.datasets.get(i);
            if (mappedAxes == null) {
                if (key.equals(ZERO)) {
                    if (dataset != null) {
                        result.add(dataset);
                    }

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        List result = new ArrayList();
        int axisIndex = this.domainAxes.indexOf(axis);
        List datasets = datasetsMappedToDomainAxis(axisIndex);
        Iterator iterator = datasets.iterator();
        while (iterator.hasNext()) {
            CategoryDataset dataset = (CategoryDataset) iterator.next();
            // add the unique categories from this dataset
            for (int i = 0; i < dataset.getColumnCount(); i++) {
                Comparable category = dataset.getColumnKey(i);
                if (!result.contains(category)) {
                    result.add(category);
                }
            }
        }

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