JFreeChart动态画折线图的方法

JFreeChart动态画折线图的方法

本文实例为大家分享了JFreeChart动态画折线图的具体代码，供大家参考，具体内容如下

每隔一秒画一次，一分钟后重新画

需要的jar包是：gnujaxp.jar，jcommon-1.0.16.jar，jfreechart-1.0.13.jar

public class JFreeZheXianTest{

public static XYSeries xyCPUseries = new XYSeries("CPU");

public static int hundroud = 0;

public static JFreeChart jfreechart = null;

public JPanel getCPUJFreeChart(){

jfreechart = ChartFactory.createXYLineChart(

null, null, null, createDataset1(),

PlotOrientation.VERTICAL, false, true, false);

StandardChartTheme mChartTheme = new StandardChartTheme("CN");

mChartTheme.setLargeFont(new Font("黑体", Font.BOLD, 20));

mChartTheme.setExtraLargeFont(new Font("宋体", Font.PLAIN, 15));

mChartTheme.setRegularFont(new Font("宋体", Font.PLAIN, 15));

ChartFactory.setChartTheme(mChartTheme);

jfreechart.setBorderPaint(new Color(0,204,205));

jfreechart.setBorderVisible(true);

XYPlot xyplot = (XYPlot) jfreechart.getPlot();

// Y轴

NumberAxis numberaxis = (NumberAxis) xyplot.getRangeAxis();

numberaxis.setLowerBound(0);

numberaxis.setUpperBound(100);

numberaxis.setTickUnit(new NumberTickUnit(100d));

// 只显示整数值

numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

// numberaxis.setAutoRangeIncludesZero(true);

numberaxis.setLowerMargin(0); // 数据轴下（左）边距 ­

numberaxis.setMinorTickMarksVisible(false);// 标记线是否显示

numberaxis.setTickMarkInsideLength(0);// 外刻度线向内长度

numberaxis.setTickMarkOutsideLength(0);

// X轴的设计

NumberAxis x = (NumberAxis) xyplot.getDomainAxis();

x.setAutoRange(true);// 自动设置数据轴数据范围

// 自己设置横坐标的值

x.setAutoTickUnitSelection(false);

x.setTickUnit(new NumberTickUnit(60d));

// 设置最大的显示值和最小的显示值

x.setLowerBound(0);

x.setUpperBound(60);

// 数据轴的数据标签：只显示整数标签

x.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

x.setAxisLineVisible(true);// X轴竖线是否显示

x.setTickMarksVisible(false);// 标记线是否显示

RectangleInsets offset = new RectangleInsets(0, 0, 0, 0);

xyplot.setAxisOffset(offset);// 坐标轴到数据区的间距

xyplot.setBackgroundAlpha(0.0f);// 去掉柱状图的背景色

xyplot.setOutlinePaint(null);// 去掉边框

// ChartPanel chartPanel = new ChartPanel(jfreechart);

// chartPanel.restoreAutoDomainBounds();//重置X轴

ChartPanel chartPanel = new ChartPanel(jfreechart, true);

return chartPanel;

}

/**

* 该方法是数据的设计

*

* @return

*/

public static XYDataset createDataset1() {

XYSeriesyzHZMCollection xyseriescollection = new XYSeriesCollection();

xyseriescollection.addSeries(xyCPUseries);

return xyseriescollection;

}

/**

* 随机生成的数据

*/

public static void dynamicRun() {

int i = 0;

while (true) {

double factor = Math.random()*100;

hundroud = (int)factor;

jfreechart.setTitle("CPU的大小是： "+hundroud+"%");

jfreechart.getTitle().setFont(new Font("微软雅黑", 0, 16));//设置标题字体

xyCPUseries.add(i, factor);

try {

Thread.currhttp://entThread();

Thread.sleep(1000);

} catch (InterruptedException e) {

e.printStackTrace();

}

i++;

if (i == 60){

i=0;

xyCPUseries.delete(0, 59);

continue;

}

}

}

public static void main(String[] args) {

JFreeZheXianTest jz = new JFreeZheXianTest();

http://JFrame frame = new JFrame();

frame.setSize(700http://, 500);

frame.getContentPane().add(jz.getCPUJFreeChart(), BorderLayout.CENTER);

frame.setVisiblhttp://e(true);

frame.setLocationRelativeTo(null); // 窗口居于屏幕正中央

frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

dynamicRun();

}

}

版权声明：本文内容由网络用户投稿，版权归原作者所有，本站不拥有其著作权，亦不承担相应法律责任。如果您发现本站中有涉嫌抄袭或描述失实的内容，请联系我们jiasou666@gmail.com 处理，核实后本网站将在24小时内删除侵权内容。