如何在JFreeChart上以秒为单位忽略分数? [英] How to omit fraction in seconds at JFreeChart?

问题描述

朋友，Atlast我只是为从数据库中收集的值生成JFreeChart.但是在那上面，我只是使用

Friends, Atlast i just generate JFreeChart for the collected value from the database. But on that, i just use

Second sec = new Second();
Series.add(sec.previous(), ExistingValue);
Series.add(sec, Value);
Dataset = new TimeSeriesCollection(Series);

但是它显示的结果包含另外的分数.它仅以0.250秒递增.实际上，我只希望秒数增加1.我该如何获取?还有从0以外的给定值开始Y角度图的任何方法吗?

But it displayed result contains additional fractional point. And it just incremented with 0.250 seconds. Actually i want seconds only incremented with 1. How can i get it? And Is there any way to start Y angle chart from given value other than 0?

推荐答案

您可以获取对绘图/图表的域"轴(x轴)的引用，并可以设置任何您喜欢的格式的SimpleDateFormat:

You can get a reference to the Domain axis (x-axis) of your plot/chart and set a SimpleDateFormat of any format you like:

JFreeChart chart;
DateAxis axis  = (DateAxis)chart.getXYPlot().getDomainAxis();
axis.setDateFormatOverride(new SimpleDateFormat("HH:mm:ss"));

可以执行同样的操作来格式化范围轴(y轴).

The same can be done to format the Range axis (y-axis).

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