JFreeChart_TimeSeriesChart

package com.jfreechart; import java.awt.Color; import java.awt.Font; import java.awt.Graphics2D; import java.awt.geom.Rectangle2D; import java.io.FileOutputStream; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.Iterator; import java.util.List; import java.util.Random; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartUtilities; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.CategoryLabelPositions; import org.jfree.chart.axis.DateAxis; import org.jfree.chart.axis.DateTick; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.labels.StandardXYItemLabelGenerator; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.XYItemRenderer; import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; import org.jfree.chart.title.TextTitle; import org.jfree.data.time.Day; import org.jfree.data.time.TimeSeries; import org.jfree.data.time.TimeSeriesCollection; import org.jfree.data.xy.XYDataset; import org.jfree.ui.RectangleEdge; import org.jfree.ui.RectangleInsets; import org.jfree.ui.TextAnchor; /** * * @ClassName: JFreeChart_TimeSeriesChart * @author xialong * @date Jan 25, 2011 7:00:25 PM * @Description: * JFreeChart生成时序图 * */ public class JFreeChart_TimeSeriesChart { /** * @param args */ public static void main(String[] args) { try { print(); } catch (IOException e) { e.printStackTrace(); } } /** * 输出图片 * @throws IOException */ public static void print() throws IOException{ FileOutputStream fos = new FileOutputStream("D://jfreechart//timeSeriesChart"+System.currentTimeMillis()+".jpg"); ChartUtilities.writeChartAsJPEG(fos,//输出到那个流， 1, //图片质量，0~1 getJFreeChart(), //图表对象 1200,//宽 600,//高 null//ChartRenderingInfo信息 ); fos.close(); } /** * 产生JFreeChart对象 * * @return */ public static JFreeChart getJFreeChart() { JFreeChart imgChart=null; // JFreeChart对象 参数：标题，目录轴显示标签，数值轴显示标签，数据集，是否显示图例，是否生成工具，是否生成URL连接 //平面 imgChart = ChartFactory.createTimeSeriesChart("", "X轴", "Y轴", getDataSet(), true, true, false); imgChart.setBackgroundPaint(Color.white); imgChart.setBorderVisible(true);// 边框可见 TextTitle title = new TextTitle("时间序列图", new Font("宋体", Font.BOLD, 20)); // 解决曲线图片标题中文乱码问题 imgChart.setTitle(title); //解决图表底部中文乱码问题 imgChart.getLegend().setItemFont(new Font("宋体", Font.PLAIN, 12)); //获得 plot : XYPlot!! XYPlot xyplot = (XYPlot)imgChart.getPlot(); xyplot.setBackgroundPaint(Color.lightGray); xyplot.setDomainGridlinePaint(Color.white); xyplot.setRangeGridlinePaint(Color.white); xyplot.setAxisOffset(new RectangleInsets(5D, 5D, 5D, 5D)); xyplot.setDomainCrosshairVisible(true); xyplot.setRangeCrosshairVisible(true); //设置x轴坐标值斜着显示 DateAxis dateAxis = new DateAxis("日期") { @SuppressWarnings("unchecked") protected List<DateTick> refreshTicksHorizontal(Graphics2D g2, Rectangle2D dataArea, RectangleEdge edge) { List ticks = super.refreshTicksHorizontal(g2, dataArea, edge); List<DateTick> newTicks = new ArrayList<DateTick>(); for (Iterator it = ticks.iterator(); it.hasNext();) { DateTick tick = (DateTick) it.next(); newTicks.add(new DateTick(tick.getDate(), tick.getText(), TextAnchor.TOP_RIGHT, TextAnchor.TOP_RIGHT, -Math.PI/3)); } return newTicks; } }; xyplot.setDomainAxis(dateAxis); // Y轴 NumberAxis numberaxis = (NumberAxis) xyplot.getRangeAxis(); setNumberAxis(numberaxis); // x轴 ValueAxis domainAxis = xyplot.getDomainAxis(); setDomainAxis(domainAxis); XYItemRenderer xyitemrenderer = xyplot.getRenderer(); if(xyitemrenderer instanceof XYLineAndShapeRenderer){ XYLineAndShapeRenderer xylineandshaperenderer = (XYLineAndShapeRenderer)xyitemrenderer; //数据点可见 xylineandshaperenderer.setBaseShapesVisible(true); //数据点是实心点 xylineandshaperenderer.setBaseShapesFilled(true); //数据点显示数据 xylineandshaperenderer.setBaseItemLabelGenerator(new StandardXYItemLabelGenerator()); xylineandshaperenderer.setBaseItemLabelsVisible(true); } //对domain 轴上日期显示格式定义 DateAxis dateaxis = (DateAxis)xyplot.getDomainAxis(); dateaxis.setDateFormatOverride(new SimpleDateFormat("MM-DD")); return imgChart; } /** * 设置X轴 * @param domainAxis */ private static void setDomainAxis(ValueAxis domainAxis){ // 解决x轴坐标上中文乱码 domainAxis.setTickLabelFont(new Font("sans-serif", Font.PLAIN, 11)); // 解决x轴标题中文乱码 domainAxis.setLabelFont(new Font("宋体", Font.PLAIN, 14)); // 用于显示X轴刻度 domainAxis.setTickMarksVisible(true); } /** * 设置Y轴 * @param numberAxis */ private static void setNumberAxis(NumberAxis numberaxis){ numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); // 是否显示零点 numberaxis.setAutoRangeIncludesZero(true); numberaxis.setAutoTickUnitSelection(false); // 解决Y轴标题中文乱码 numberaxis.setLabelFont(new Font("sans-serif", Font.PLAIN, 14)); // numberaxis.setTickUnit(new NumberTickUnit(10000));//Y轴数据间隔 } /** * 产生数据源 * * @return */ private static XYDataset getDataSet() { Random rand = new Random(); TimeSeriesCollection dateset = new TimeSeriesCollection(); TimeSeries timeSeries1 = new TimeSeries("JFreeChart",Day.class); Calendar cal = Calendar.getInstance(); for(int i=1;i<=cal.get(Calendar.DAY_OF_MONTH);i++){ timeSeries1.add(new Day(i,1,2010),rand.nextInt(10)); } dateset.addSeries(timeSeries1); return dateset; } }

 

图片输出如下