Java JFreeChart.getLegend方法代码示例

import org.jfree.chart.JFreeChart; //导入方法依赖的package包/类
private void legendPositionChanged(LegendPosition legendPosition) {
	JFreeChart chart = getCurrentChart();
	if (chart != null) {
		LegendTitle legend = chart.getLegend();
		RectangleEdge position = legendPosition.getPosition();
		if (legend != null) {
			if (position != null) {
				legend.setPosition(position);
			} else {
				while (chart.getLegend() != null) {
					chart.removeLegend();
				}
			}
		} else {
			if (position != null) {
				resetLegend();
			}
		}
	}
}
 

import org.jfree.chart.JFreeChart; //导入方法依赖的package包/类
public void paintDeviationChart(Graphics graphics, int width, int height) {
	prepareData();

	JFreeChart chart = createChart(this.dataset);

	// set the background color for the chart...
	chart.setBackgroundPaint(Color.white);

	// legend settings
	LegendTitle legend = chart.getLegend();
	if (legend != null) {
		legend.setPosition(RectangleEdge.TOP);
		legend.setFrame(BlockBorder.NONE);
		legend.setHorizontalAlignment(HorizontalAlignment.LEFT);
	}

	Rectangle2D drawRect = new Rectangle2D.Double(0, 0, width, height);
	chart.draw((Graphics2D) graphics, drawRect);
}
 

import org.jfree.chart.JFreeChart; //导入方法依赖的package包/类
/**
 * Sets the properties of the specified legend to match the properties
 * defined on this panel.
 *
 * @param chart    the chart whose legend is to be modified.
 */
public void setLegendProperties(JFreeChart chart) {
    if(this.showLegend) {
        Legend legend = chart.getLegend();
        if(legend == null) {
            legend = new StandardLegend();
            chart.setLegend(legend);
        }
        if (legend instanceof StandardLegend) {
            // only supports StandardLegend at present
            StandardLegend standard = (StandardLegend) legend;
            standard.setOutlineStroke(getOutlineStroke());
            standard.setOutlinePaint(getOutlinePaint());
            standard.setBackgroundPaint(getBackgroundPaint());
            standard.setItemFont(getSeriesFont());
            standard.setItemPaint(getSeriesPaint());
        }
        else {
            // raise exception - unrecognised legend
        }
    }
    else {
        chart.setLegend(null);
    }
}
 

import org.jfree.chart.JFreeChart; //导入方法依赖的package包/类
@Override
protected void updatePlotter() {
	int categoryCount = prepareData();
	String maxClassesProperty = ParameterService
			.getParameterValue(MainFrame.PROPERTY_RAPIDMINER_GUI_PLOTTER_COLORS_CLASSLIMIT);
	int maxClasses = 20;
	try {
		if (maxClassesProperty != null) {
			maxClasses = Integer.parseInt(maxClassesProperty);
		}
	} catch (NumberFormatException e) {
		// LogService.getGlobal().log("Series plotter: cannot parse property 'rapidminer.gui.plotter.colors.classlimit', using maximal 20 different classes.",
		// LogService.WARNING);
		LogService.getRoot().log(Level.WARNING,
				"com.rapidminer.gui.plotter.charts.SeriesChartPlotter.parsing_property_error");
	}
	boolean createLegend = categoryCount > 0 && categoryCount < maxClasses;

	JFreeChart chart = createChart(this.dataset, createLegend);

	// set the background color for the chart...
	chart.setBackgroundPaint(Color.white);

	// domain axis
	if (axis[INDEX] >= 0) {
		if (!dataTable.isNominal(axis[INDEX])) {
			if (dataTable.isDate(axis[INDEX]) || dataTable.isDateTime(axis[INDEX])) {
				DateAxis domainAxis = new DateAxis(dataTable.getColumnName(axis[INDEX]));
				domainAxis.setTimeZone(Tools.getPreferredTimeZone());
				chart.getXYPlot().setDomainAxis(domainAxis);
				if (getRangeForDimension(axis[INDEX]) != null) {
					domainAxis.setRange(getRangeForDimension(axis[INDEX]));
				}
				domainAxis.setLabelFont(LABEL_FONT_BOLD);
				domainAxis.setTickLabelFont(LABEL_FONT);
				domainAxis.setVerticalTickLabels(isLabelRotating());
			}
		} else {
			LinkedHashSet<String> values = new LinkedHashSet<String>();
			for (DataTableRow row : dataTable) {
				String stringValue = dataTable.mapIndex(axis[INDEX], (int) row.getValue(axis[INDEX]));
				if (stringValue.length() > 40) {
					stringValue = stringValue.substring(0, 40);
				}
				values.add(stringValue);
			}
			ValueAxis categoryAxis = new SymbolAxis(dataTable.getColumnName(axis[INDEX]),
					values.toArray(new String[values.size()]));
			categoryAxis.setLabelFont(LABEL_FONT_BOLD);
			categoryAxis.setTickLabelFont(LABEL_FONT);
			categoryAxis.setVerticalTickLabels(isLabelRotating());
			chart.getXYPlot().setDomainAxis(categoryAxis);
		}
	}

	// legend settings
	LegendTitle legend = chart.getLegend();
	if (legend != null) {
		legend.setPosition(RectangleEdge.TOP);
		legend.setFrame(BlockBorder.NONE);
		legend.setHorizontalAlignment(HorizontalAlignment.LEFT);
		legend.setItemFont(LABEL_FONT);
	}

	AbstractChartPanel panel = getPlotterPanel();
	if (panel == null) {
		panel = createPanel(chart);
	} else {
		panel.setChart(chart);
	}

	// ATTENTION: WITHOUT THIS WE GET SEVERE MEMORY LEAKS!!!
	panel.getChartRenderingInfo().setEntityCollection(null);
}
 

import org.jfree.chart.JFreeChart; //导入方法依赖的package包/类
private JFreeChart createChart(XYDataset dataset) {
	// create the chart...
	JFreeChart chart = ChartFactory.createXYLineChart(null,      // chart title
			null,                      // x axis label
			null,                      // y axis label
			dataset,                  // data
			PlotOrientation.VERTICAL, true,                     // include legend
			true,                     // tooltips
			false                     // urls
			);

	chart.setBackgroundPaint(Color.white);

	// get a reference to the plot for further customisation...
	XYPlot plot = (XYPlot) chart.getPlot();
	plot.setBackgroundPaint(Color.WHITE);
	plot.setAxisOffset(new RectangleInsets(5.0, 5.0, 5.0, 5.0));
	plot.setDomainGridlinePaint(Color.LIGHT_GRAY);
	plot.setRangeGridlinePaint(Color.LIGHT_GRAY);

	ValueAxis valueAxis = plot.getRangeAxis();
	valueAxis.setLabelFont(PlotterAdapter.LABEL_FONT_BOLD);
	valueAxis.setTickLabelFont(PlotterAdapter.LABEL_FONT);

	ValueAxis domainAxis = plot.getDomainAxis();
	domainAxis.setLabelFont(PlotterAdapter.LABEL_FONT_BOLD);
	domainAxis.setTickLabelFont(PlotterAdapter.LABEL_FONT);

	DeviationRenderer renderer = new DeviationRenderer(true, false);
	Stroke stroke = new BasicStroke(2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);
	if (dataset.getSeriesCount() == 1) {
		renderer.setSeriesStroke(0, stroke);
		renderer.setSeriesPaint(0, Color.RED);
		renderer.setSeriesFillPaint(0, Color.RED);
	} else if (dataset.getSeriesCount() == 2) {
		renderer.setSeriesStroke(0, stroke);
		renderer.setSeriesPaint(0, Color.RED);
		renderer.setSeriesFillPaint(0, Color.RED);

		renderer.setSeriesStroke(1, stroke);
		renderer.setSeriesPaint(1, Color.BLUE);
		renderer.setSeriesFillPaint(1, Color.BLUE);
	} else {
		for (int i = 0; i < dataset.getSeriesCount(); i++) {
			renderer.setSeriesStroke(i, stroke);
			Color color = colorProvider.getPointColor((double) i / (double) (dataset.getSeriesCount() - 1));
			renderer.setSeriesPaint(i, color);
			renderer.setSeriesFillPaint(i, color);
		}
	}
	renderer.setAlpha(0.12f);
	plot.setRenderer(renderer);

	// legend settings
	LegendTitle legend = chart.getLegend();
	if (legend != null) {
		legend.setPosition(RectangleEdge.TOP);
		legend.setFrame(BlockBorder.NONE);
		legend.setHorizontalAlignment(HorizontalAlignment.LEFT);
		legend.setItemFont(PlotterAdapter.LABEL_FONT);
	}
	return chart;
}
 

import org.jfree.chart.JFreeChart; //导入方法依赖的package包/类
public static JFreeChart createChart(XYDataset xydataset, String shou, String shu) {
	JFreeChart jfreechart = ChartFactory.createScatterPlot("Rating and Rating People Distribution", shou, shu,
			xydataset, PlotOrientation.VERTICAL, true, false, false);
	jfreechart.setBackgroundPaint(Color.white);
	jfreechart.setBorderPaint(Color.GREEN);

	XYPlot xyplot = (XYPlot) jfreechart.getPlot();
	xyplot.setNoDataMessage("no data");
	xyplot.setNoDataMessageFont(new Font("微软雅黑", Font.BOLD, 14));
	xyplot.setNoDataMessagePaint(Color.blue);
	xyplot.setBackgroundPaint(Color.lightGray);

	TextTitle textTitle = jfreechart.getTitle();
	textTitle.setFont(new Font("宋体", Font.BOLD, 20));
	LegendTitle legend = jfreechart.getLegend();
	if (legend != null) {
		legend.setItemFont(new Font("宋体", Font.BOLD, 20));
	}

	XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) xyplot.getRenderer();
	renderer.setBaseShapesVisible(true);
	renderer.setDrawOutlines(true);
	renderer.setSeriesOutlinePaint(0, Color.WHITE);  
	renderer.setUseOutlinePaint(true);  
	renderer.setSeriesOutlineStroke(1, new BasicStroke(0.5F));
	xyplot.setRenderer(renderer);

	NumberAxis numberaxis = (NumberAxis) xyplot.getDomainAxis();
	numberaxis.setTickMarkInsideLength(3.0F);  
    numberaxis.setTickMarkOutsideLength(0.0F); 
	numberaxis.setUpperBound(280000);
	numberaxis.setLowerBound(50000);
	
	numberaxis.setAxisLineStroke(new BasicStroke(1.5f));  

	NumberAxis numberaxis1 = (NumberAxis) xyplot.getRangeAxis();
	numberaxis1.setUpperBound(10.0);
	numberaxis1.setLowerBound(5.0);
	
	NumberTickUnit ntu1 = new NumberTickUnit(0.5);
	numberaxis1.setTickUnit(ntu1);
	
	return jfreechart;
}
 

import org.jfree.chart.JFreeChart; //导入方法依赖的package包/类
public GraphGenerator(final String title, AthenaFeatures athenaFeatures, String feature) {
        super(title);
        this.feature = feature;
        final XYDataset dataset = createDatasetFromFeatureData(athenaFeatures, feature);
        final JFreeChart chart = createChart(dataset);
        chart.setTitle("");
        LegendTitle legend = (LegendTitle) chart.getLegend();
        chart.removeLegend();
        Font nwfont = new Font("Arial",1,12);
        legend.setItemFont(nwfont);
        legend.setPosition(RectangleEdge.TOP);
//        legend.setWidth(200);
        legend.setItemLabelPadding(new RectangleInsets(3, 3, 3, 3));
        legend.setHeight(10);
//        legend.setPadding(new RectangleInsets(10, 10, 10, 10));
        XYTitleAnnotation ta = new XYTitleAnnotation(0.99, 0.98, legend, RectangleAnchor.TOP_RIGHT);
        ta.setMaxWidth(0.95);
//        chart.addLegend(legend);

        XYPlot plot = (XYPlot) chart.getPlot();
        plot.setBackgroundPaint(Color.white);
        plot.setDomainZeroBaselinePaint(Color.gray);
        plot.setDomainGridlinePaint(Color.gray);
        plot.setDomainGridlineStroke(new BasicStroke(0.7f));
        plot.setRangeGridlinePaint(Color.gray);
        plot.setRangeGridlineStroke(new BasicStroke(0.7f));
        plot.setDomainMinorGridlinePaint(Color.black);
        plot.addAnnotation(ta);
        final XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer();
        renderer.setSeriesPaint(0, Color.black);
        renderer.setSeriesShape(0, ShapeUtilities.createDiamond(5));
        renderer.setSeriesPaint(1, Color.red);
        renderer.setSeriesShape(1, ShapeUtilities.createUpTriangle(5));
        renderer.setSeriesPaint(2, Color.blue);
        Shape shape  = new Ellipse2D.Double(-5.0,-5.0,10,10);
        renderer.setSeriesShape(2, shape);
        renderer.setShapesFilled(false);
//        renderer.setSeriesShapesVisible(1, false);

        //apply theme
//        StandardChartTheme.createJFreeTheme().apply(chart);

        plot.setRenderer(renderer);
        NumberAxis yAxis = (NumberAxis) plot.getRangeAxis();
        yAxis.setLabel(feature + " (K)");
        yAxis.setAxisLineVisible(false);
        yAxis.setTickUnit(new NumberTickUnit(50000));
        yAxis.setNumberFormatOverride(new ByteFormat());
        yAxis.setRange(new Range(0, 160000));
        plot.getRenderer().setBaseItemLabelsVisible(true);
        DateAxis xAxis = (DateAxis) plot.getDomainAxis();
        xAxis.setAxisLineVisible(false);
        xAxis.setDateFormatOverride(new SimpleDateFormat("yyyy-MM-dd-HH:mm:ss"));
        xAxis.setTickUnit(new DateTickUnit(DateTickUnit.MINUTE, 3));
        xAxis.setLabelFont(new Font("Arial",1,12));
        final ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new java.awt.Dimension(631, 381));
        chartPanel.setMouseZoomable(true, true);
        setContentPane(chartPanel);
        try { 
            ChartUtilities.saveChartAsPNG(new File("result.png"), chart, 631, 381);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }