Example usage for org.jfree.chart.plot CategoryPlot getCategories

Introduction

In this page you can find the example usage for org.jfree.chart.plot CategoryPlot getCategories.

Prototype

public List getCategories() 

Source Link

Document

Returns a list of the categories in the plot's primary dataset.

Usage

From source file:org.opennms.web.charts.ChartUtils.java

/**
 * @param barChart TODO//from ww  w.ja  v  a 2 s  . co  m
 * @param subLabelClass
 */
private static void addSubLabels(JFreeChart barChart, String subLabelClass) {
    ExtendedCategoryAxis subLabels;
    CategoryPlot plot = barChart.getCategoryPlot();
    try {
        subLabels = (ExtendedCategoryAxis) Class.forName(subLabelClass).newInstance();
        List<?> cats = plot.getCategories();
        for (int i = 0; i < cats.size(); i++) {
            subLabels.addSubLabel((Comparable<?>) cats.get(i), cats.get(i).toString());
        }
        plot.setDomainAxis(subLabels);
    } catch (InstantiationException e) {
        LOG.error("getBarChart: Couldn't instantiate configured CategorySubLabels class: {}", subLabelClass, e);
    } catch (IllegalAccessException e) {
        LOG.error("getBarChart: Couldn't instantiate configured CategorySubLabels class: {}", subLabelClass, e);
    } catch (ClassNotFoundException e) {
        LOG.error("getBarChart: Couldn't instantiate configured CategorySubLabels class: {}", subLabelClass, e);
    }
}

---

From source file:org.opennms.netmgt.charts.ChartUtils.java

/**
 * @param barChart TODO//from   ww w.j a  v a  2s.  co  m
 * @param subLabelClass
 */
private static void addSubLabels(JFreeChart barChart, String subLabelClass) {
    ExtendedCategoryAxis subLabels;
    CategoryPlot plot = barChart.getCategoryPlot();
    try {
        subLabels = (ExtendedCategoryAxis) Class.forName(subLabelClass).newInstance();
        List<?> cats = plot.getCategories();
        for (int i = 0; i < cats.size(); i++) {
            subLabels.addSubLabel((Comparable<?>) cats.get(i), cats.get(i).toString());
        }
        plot.setDomainAxis(subLabels);
    } catch (InstantiationException e) {
        log().error("getBarChart: Couldn't instantiate configured CategorySubLabels class: " + subLabelClass,
                e);
    } catch (IllegalAccessException e) {
        log().error("getBarChart: Couldn't instantiate configured CategorySubLabels class: " + subLabelClass,
                e);
    } catch (ClassNotFoundException e) {
        log().error("getBarChart: Couldn't instantiate configured CategorySubLabels class: " + subLabelClass,
                e);
    }
}

---

From source file:org.jfree.eastwood.GCategoryAxis.java

/**
 * Creates a temporary list of ticks that can be used when drawing the axis.
 *
 * @param g2  the graphics device (used to get font measurements).
 * @param state  the axis state./*from  w w  w .  j  av a2s.  c  om*/
 * @param dataArea  the area inside the axes.
 * @param edge  the location of the axis.
 *
 * @return A list of ticks.
 */
public List refreshTicks(Graphics2D g2, AxisState state, Rectangle2D dataArea, RectangleEdge edge) {

    List ticks = new java.util.ArrayList();

    // sanity check for data area...
    if (dataArea.getHeight() <= 0.0 || dataArea.getWidth() < 0.0) {
        return ticks;
    }

    CategoryPlot plot = (CategoryPlot) getPlot();
    List categories = null;
    if (this.labels == null) {
        categories = plot.getCategories();
    } else {
        categories = new java.util.ArrayList(this.labels);
        // handle a little quirk in the Google Chart API - for a horizontal
        // bar chart, the labels on the axis get applied in reverse order
        // relative to the data values
        if (plot.getOrientation() == PlotOrientation.HORIZONTAL) {
            Collections.reverse(categories);
        }
    }
    double max = 0.0;

    if (categories != null) {
        CategoryLabelPosition position = getCategoryLabelPositions().getLabelPosition(edge);
        float r = getMaximumCategoryLabelWidthRatio();
        if (r <= 0.0) {
            r = position.getWidthRatio();
        }

        float l = 0.0f;
        if (position.getWidthType() == CategoryLabelWidthType.CATEGORY) {
            l = (float) calculateCategorySize(categories.size(), dataArea, edge);
        } else {
            if (RectangleEdge.isLeftOrRight(edge)) {
                l = (float) dataArea.getWidth();
            } else {
                l = (float) dataArea.getHeight();
            }
        }
        int categoryIndex = 0;
        Iterator iterator = categories.iterator();
        while (iterator.hasNext()) {
            Comparable category = (Comparable) iterator.next();
            TextBlock label = createLabel(category, l * r, edge, g2);
            if (edge == RectangleEdge.TOP || edge == RectangleEdge.BOTTOM) {
                max = Math.max(max, calculateTextBlockHeight(label, position, g2));
            } else if (edge == RectangleEdge.LEFT || edge == RectangleEdge.RIGHT) {
                max = Math.max(max, calculateTextBlockWidth(label, position, g2));
            }
            Tick tick = new CategoryTick(category, label, position.getLabelAnchor(),
                    position.getRotationAnchor(), position.getAngle());
            ticks.add(tick);
            categoryIndex = categoryIndex + 1;
        }
    }
    state.setMax(max);
    return ticks;

}

---

From source file:nl.strohalm.cyclos.controls.reports.statistics.graphs.ChartPostProcessorImpl.java

/**
 * This method sets the x-axis labels in a rotated position. Use this only if there are a lot of bars in the graph, so there is very limited space
 * for eacht label on the x-axis. By rotating the labels, they wont overlap each other, and there will be more space per label. Set this in the
 * jsp via the param tag, using the keyword "xlabelRotation": <cewolf:chartpostprocessor id="chartPostProcessorImpl" > <cewolf:param
 * name="xlabelRotation" value="<%= new Double(0.60)%>"/> </cewolf:chartpostprocessor> The parameter is a double, indicating the rotation angle in
 * radials. <b>NOTE:</b> the rotation is set to 0.60 by default if the number of categories > 14; otherwise, the default rotation is 0. Setting
 * the parameter overrides this default.
 * @param plot//from  w ww  .  ja  va2  s.c o  m
 * @param params
 */
@SuppressWarnings("rawtypes")
private void setRotatedXaxisLabels(final CategoryPlot plot, final Map params) {
    Double rotation = (Double) params.get("xlabelRotation");
    final int numberOfCategories = plot.getCategories().size();
    if (rotation == null && numberOfCategories > ROTATE_XLABELS_IF_MORE_THAN) {
        rotation = new Double(0.60);
    }
    if (rotation != null && rotation != 0) {
        final CategoryAxis axis = plot.getDomainAxis();
        axis.setCategoryLabelPositions(
                CategoryLabelPositions.createUpRotationLabelPositions(rotation.doubleValue()));
    }
}

---

From source file:nl.strohalm.cyclos.controls.reports.statistics.graphs.ChartPostProcessorImpl.java

/**
 * This method sets the width of the bars, and the spacing between the bars. It sets a general, hard coded standard for this. In JFreeChart, you
 * cannot set the bar width. In stead, you set the gaps: - lowerMargin is the gap between the start of the x-axis and the first bar - upperMargin
 * is the gap between the end of the x-axis and the last bar - categoryMargin is the gap between the categories. Note that the number you provide
 * here, is divided over all the gaps. So if you set this margin to 0.5 (is 50%) and there are 6 categories, this means that there are 5 gaps, so
 * each gap will get 10%. - itemMargin is the gap between the bars within a category. Again, this number is divided over all the itemgaps in the
 * whole graph. The method also takes care that extreme cases (with a very small amount of bars) still look acceptable.
 * @param plot/*w  w  w.  ja  v a  2s .  c  om*/
 */
private void setMargins(final CategoryPlot plot) {
    final CategoryAxis axis = plot.getDomainAxis();
    axis.setTickLabelFont(new Font("SansSerif", Font.PLAIN, 9));
    final int categoryCount = plot.getCategories().size();
    final int seriesCount = plot.getDataset().getRowCount();
    axis.setCategoryMargin(0.23); // sets spacing between categories on x%
    // set spacing between bars inside a catgory (in fractions, so 1 = 100%)
    final BarRenderer renderer = (BarRenderer) plot.getRenderer();
    if (categoryCount == 1) {
        renderer.setItemMargin(0.15);
    } else {
        renderer.setItemMargin(0.03);
    }
    // extreme cases
    if (categoryCount * seriesCount < 4) {
        final double outerMargins = (4.0 - (categoryCount * seriesCount)) / 10.0;
        axis.setLowerMargin(outerMargins);
        axis.setUpperMargin(outerMargins);
    }
}

---

From source file:edu.harvard.i2b2.analysis.ui.AnalysisComposite.java

/**
 * Creates a chart./* w ww. j  ava 2  s. c  o m*/
 * 
 * @param dataset
 *            dataset.
 * 
 * @return A chart.
 */
private JFreeChart createChart(CategoryDataset dataset, String title) {

    JFreeChart chart = ChartFactory.createBarChart(title, // chart
            // title
            "", // domain axis label
            "", // range axis label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            false, // include legend
            true, // tooltips?
            false // URLs?
    );

    CategoryPlot plot = (CategoryPlot) chart.getPlot();
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setDomainGridlinesVisible(true);
    plot.setRangeGridlinePaint(Color.white);
    if (plot.getCategories().size() > 10) {
        plot.getDomainAxis().setCategoryLabelPositions(CategoryLabelPositions.DOWN_45);
    }
    Font f = chart.getTitle().getFont();
    chart.getTitle().setFont(new java.awt.Font(f.getFamily(), 1, 12));
    return chart;

}

---