Question

java swing JFreeChart 重绘问题?

大大们好!!!
我再做曲线图我先贴出我绘图的部分!
public TimeSeries prepareData1(TimeSeries timeseries, String date, int i) {
Calendar c = Calendar.getInstance();
Date trueDate = DateUtil.formatDate("yyyyMMddHHmm", date + "0845");
c.setTime(trueDate);
c.add(Calendar.MINUTE, i);
int Buy = Math.round(Float.parseFloat(String.valueOf(c1.get(i).get(2))));//买
int Sell = Math.round(Float.parseFloat(String.valueOf(c1.get(i).get(3))));//卖
timeseries.addOrUpdate(new Minute(c.getTime()), (Sell - Buy) / 50);
return timeseries;
}
然後我有方法调用这个方法
public void timeseries() {
for (int i = 0; i < 301; i++) {
System.out.println("value" + i);
timeseries1 = prepareData1(timeseries1, getsDate(), i);
timeseries2 = prepareData2(timeseries2, getsDate(), i);
timeseries3 = prepareData3(timeseries3, getsDate(), i);
timeseries4 = prepareData4(timeseries4, getsDate(), i);
//timeseries5 = prepareData5(timeseries5, getsDate(), i);
timeseries6 = prepareData6(timeseries6, getsDate(), i);
repaint();
// validate();
// try {
// Thread.sleep(300);
// } catch (InterruptedException e) {}
}
}
我这调用方法的时候有试著重绘,但是都试等回圈跑完才重绘??
不知道有没有办法跑一次绘制一次???
求大大们指教,感激不尽!!!!

Answer 1

把你的循环操作放到一个单独的线程里执行，如果想看清楚每次重绘的效果，还需要加sleep

public void timeseries() {
            Thread t = new Thread() {
                public void run() {
                    for (int i = 0; i < 301; i++) {
                        System.out.println("value" + i);
                        timeseries1 = prepareData1(timeseries1, getsDate(), i);
                        timeseries2 = prepareData2(timeseries2, getsDate(), i);
                        timeseries3 = prepareData3(timeseries3, getsDate(), i);
                        timeseries4 = prepareData4(timeseries4, getsDate(), i);
                        //timeseries5 = prepareData5(timeseries5, getsDate(), i);
                        timeseries6 = prepareData6(timeseries6, getsDate(), i);
                        repaint();
                        try {
                            Thread.sleep(1000);
                        } catch (InterruptedException e) {}
                    }
                }
            };
            t.start();
        }

追问

可以正常实施了,是我没搞清楚,执行绪呀!!!!
那我想请问你一下,如果我要连接标记线??
那函数是要引用哪一个???

追答

TimeSeries图的话自动应该会把你输入的数据点连接到一起出现折线图啊

追问

我有做一个滑块,想要和上面的标记做连结!!!
不想要用滑鼠点下去看,滑块我有做数据联结,想要再配合图片的标记,
这样做出来的程式感觉上比较好看的懂!!!
直关!!!!
希望大大可以指教一下!!!!