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I took a look into the source code for XYPlot and saw what was happening when I called setDataSet(null); and it looked like it was removing change listeners. So I tried the following code and it fixed it just the same as running setDataSet(null); if(chart != null && chart.getXYPlot().getDataset() !=...

Also.... After I did that little fix by setting the dataset to null, I can still induce memory errors by using the mouse and zooming back and forth. Select a rectangle, zoom back to original, select a rectangle, zoom back to original over and over again eats up memory that I can't seem to get back. ...

I am writing a little utility as mentioned here. http://www.jfree.org/phpBB2/viewtopic.php?t=20945 I have files with a bunch of datasets (average is about 120 data sets with 1,600 datapoints each). Every time I show a new data set, I create a new chart. I could watch the memory usage go up as I go t...

Thanks for the replies. Right now my DataFile class extends XYSeries. I'll look into extending XYDataset instead and skipping the series as suggested. In the mean time I think I found my source of the memory leak. I'm going to start a new topic and edit this post to include a link to the new one. ED...

I'd like some performance suggestions. I'm running into java.lang.OutOfMemoryError: Java heap space errors. I'm reading in a 7 Megabyte file which has 122 different data sets. Each set has 1,600 XYData points. When I open one of these files I read all data sets and run some very basic analysis on th...

Well, I have since modified my DataFile class to extend XYSeries.
This obviously helped in that it probably uses about half as much memory as it used to.
Without any other changes I'm sure the memory leak is still there but I'm not running into problems.

Hello everyone. I am having problems with an application I wrote using jfreechart. I am opening up a file file and reading in 84 sets of data with 1600 data points each. All of this data stays in memory in 84 DataFile objects which extend Vector<DataPoint> so I can do stuff like this... DataFile dat...

Has anyone had to deal with annotations that should remain visible after the chart is zoomed in? I am trying to develop an application that plots some data and finds some points of interest (zeros that meet certain requirements). I want those values to be displayed on the plot. I have got this far. ...

Actually, it was the range I was looking for, just didn't set it to visible.

One is to emphasize the X axis (at 0) ...make it thicker or something. If your chart is based on XYPlot, there are methods: setRangeZeroBaselineVisible(boolean); setRangeZeroBaselineStroke(Stroke); setRangeZeroBaselinePaint(Paint); ...that can be used to highlight the zero line (simulating a kind o...

Hello everyone. I just started using jfreechart for a little project I'm working on. It works great, nice and fast. There are only a couple of things I'd like to change on the chart I'm making. One is to emphasize the X axis (at 0) ...make it thicker or something. The other thing is to add some labe...