jfreechart关于交互地修改显示的曲线拖动鼠标的可能性的一般性问题 [英] jfreechart general issue on the possibility of interactlively modify a displayed curve dragging mouse

问题描述

我以前从未使用过JFreeChart.有人告诉我，这是用Java绘制图表的不错的产品.

I've never used JFreeChart before. It has been told me that it's a pretty good product for drawing charts in Java.

我有一个疑问，我想向已经有JFreeChart经验的人提出一些建议:

I have a doubt, and I would like to have some advices by someone that has already some JFreeChart experience:

JFreeChart是否仅设计用于显示静态的预先计算的值集?

is JFreeChart designed only for display static precomputed set of values?

或者是否存在任何非常简单"的方式来处理鼠标事件(可能是拖动)，以便动态更改显示的曲线(并因此更改关联的数据集)?

Or is there any "pretty easy" way to handle mouse event (possibly dragging) in order to dynamically change the displayed curves (and consequentely the associated data set)?

非常简单"是指无需编写太多代码即可执行以下操作:

With "pretty easy" I mean been able to do the following without having to write too much lines of code:

1. 单击显示的图表(例如折线图)，然后确定显示的数据集的较近点.
2. 使用某种拖动事件根据鼠标的移动来更改数据集的值
3. 以交互方式显示更新的图表

推荐答案

JFreeChart 可以当然可以处理动态图表，如此处所示;并且您可以通过多种方式与现有图表进行交互，如

JFreeChart can certainly handle dynamic charts, as shown here; and you can interact in a variety of ways with an existing chart, as shown here.

附录:以下是一些详细信息:

Addendum: Here's a few more specifics:

1. 当您将鼠标悬停在某个点上时，默认的工具提示生成器会显示数据，但您也可以提供自定义生成器.

1. The default tooltip generator displays data when you hover over a point, but you can also supply a custom generator.

ChartPanel同时实现MouseListener和MouseMotionListener.

JWS演示是一个宝库的例子，很多互动. crosshair演示特别吸引人.

The JWS demo is a trove of examples, many interactive. The crosshair demos are particularly appealing.

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