JFreeChart TimeSeries图表删除没有值的天数 [英] JFreeChart TimeSeries Chart remove days with no value

问题描述

有没有一个简单的方法来删除没有价值的天？
以下是我的一些数据

12-04-2012 => 15

13-04-2012 => 12

15-04-2012 => 10

16-04-2012 => 5

Is there a simple way to remove days with no value? Here is some of my data
12-04-2012 => 15
13-04-2012 => 12
15-04-2012 => 10
16-04-2012 => 5

在图表14-04-2012画了。我的意思是，theres在13-04和15-04之间更长的线。

In chart 14-04-2012 is painted. I mean, theres a longer line between 13-04 and 15-04. Is it possible to have equal gaps between values?

推荐答案

是否使用TimeSeries（org.jfree.data.time.TimeSeries
）？如果这样考虑使用CategoryDataset（org.jfree.data.time.TimeSeries）

Are you using an TimeSeries (org.jfree.data.time.TimeSeries )? if so consider using a CategoryDataset (org.jfree.data.time.TimeSeries)

   private static CategoryDataset createDataset() {
    DefaultCategoryDataset dataset = new DefaultCategoryDataset();
    dataset.addValue(15, "Series 1", "12-04-2012");
    dataset.addValue(12, "Series 1", "13-04-2012");
    dataset.addValue(10, "Series 1", "15-04-2012");
    dataset.addValue(5,  "Series 1",  "16-04-2012");
    return dataset;
} 

使用此数据与JFreeChart 线图演示8 您会看到：

Using this data with JFreeChart Line Chart Demo 8 you will get this:

省略第14个

这篇关于JFreeChart TimeSeries图表删除没有值的天数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！