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Hello, I am attempting to use the same chart object in multiple JPanels, but it doesn't seem to be working how I would expect. Basically, I want to make a pop-up window that displays a single chart in its own JFrame when the user clicks on the smaller version of it which is displayed in the main GUI...

Okay, so this custom Graphics2D implementation that is being passed to the ChartPanel does not implement getDeviceConfiguration and hence the null pointer exception. Mystery solved, but I'm still wondering if there's a way to draw the chart onto an arbitrary Graphics2D without using this. Maybe I sh...

Hi, I'm having an issue with painting a ChartPanel. This is using the JFreeChart 1.0.19 distribution. Basically, there is a null pointer exception here.... GraphicsConfiguration gc = g2.getDeviceConfiguration(); this.chartBuffer = gc.createCompatibleImage(this.chartBufferWidth, this.chartBufferHeigh...

Okay, I see what you're saying. But actually setting minimum sizes when auto ranging also doesn't always give me what I want.

Working on test code now....

Isn't this the simplest way to make that go away?

Hi, I have what is hopefully a simple question about the display area of a chart when explicitly setting an axis range. I create an axis like this in the usual way: NumberAxis xAxis = new NumberAxis("X Axis"); xAxis.setRange(new Range(0.0, 2.0), true, true); plot.setDomainAxis(xAxis); So I'm trying ...

Displaying animated traffic lights is not charting or plotting per se, so I don't think there's anything in JFreeChart for doing this. On the other hand, you could probably come up with something decent by coding directly to the Java 2D API instead, and then you can make it exactly how you want it. ...

Or you could just tell them this is "chart junk" that they don't need!

Hello, everyone. I had a general question before I get going on a new project. What is the best strategy for implementing a strip chart using JFreeChart? Basically, data values are plotted on the Y axis and time on X. It should "roll" to the right as data values are added in real time. I think typic...

Hello, I was wondering if anyone could give me some advice on this. I am using the XYStepRenderer to display an outline of histogram data, as shown here: http://www.slac.stanford.edu/~jeremym/jfreechart_step_chart.png This is ALMOST looking how I want but as you can see there are lines being drawn a...

Hi, I'm experiencing a problem similar to this one: http://community.jaspersoft.com/questions/534091/jfreechart-xyblock-chart-doesnt-show-gridlines When I have a block renderer set, I can't see the grid lines. Actually, I've got a couple renderers set on my XYPlot that I am turning on/off dynamicall...

Hi, I'm encountering a weird problem with the XYBlockRenderer. It seems like it is not respecting the setting of setSeriesVisible(0, false) that I am using to try and turn it off. Indeed, when I look at its drawItem() method, it seems like it doesn't check this. Now, I'm supposing that something tha...

Hi. Thanks for the feedback and the link. Yes, after my initial post I realized that the bubble renderer is not appropriate here, because 2D histograms are binned and the boxes need to be constrained into fitting inside their respective bins. So I'm considering writing a renderer to display shapes t...

Hi, I have posted a few times about displaying 2D histogram data using shapes scaled by the Z values, but the discussion never really went anywhere. Two dimensional histogram data can be displayed as a color chart, but the big problem there is that only one dataset is displayble at a time. Multiple ...

Thanks for the explanation. This makes sense. I guess my main concern is that drawing the grid lines over the axis lines sometimes looks a bit weird. Is there any way to control this rendering order or is it basically hard-coded? By default, I would actually want the axis lines drawn over the grid l...