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That didn't seem to fix it. I think the problem might not be the shadow. If you look at the bars carefully, they appear to be drawn vertically instead of horizontally. I think the gap between the 0 on the x-axis the the bottom of each bar might be the margin. I'm using a CombinedXYRangeChart and abo...

http://img560.imageshack.us/img560/710/screenshotwx.jpg 2 issues: 1. How do I get rid of the offset from 0? The blue bars should be touching the green bars at 0 on the x-axis (not shown). 2. How do I either get rid of the 3d or make the 3D bars render horizontally instead of vertically as shown abo...

I figured it out. You do want to set: setAutoWidthGap(0); setAutoWidthFactor(1); As I had below. However, the reason there are gaps when zooming in is due to this: case WIDTHMETHOD_AVERAGE: itemCount = highLowData.getItemCount(series); if (horiz) { xxWidth = dataArea.getHeight() / itemCount; } else ...

I have a candlestick chart and I want the candlesticks to always be touching so that there's no gaps between adjacent sticks. This question is not about accounting for missing time. It is simply about how do I get the candlesticks to be as large as possible without overlapping each other? I am using...

I had implemented my own dataset classes and forgot to call fireDataSetUpdate(). It's working now.

I created a JFreeChart which has periodic updates to the dataset after the chart is created. That part works fine, the chart correctly updates with new data. Problem is that eventually, it starts plotting off the chart. I tried adding in the RestoreAutoBounds() from ChartPanel class right after I up...

It is using bufferedImage. I was able to tell by placing print statements / debugging. I'm using the latest release. I think you're right that the best bang for the buck will be in optimizing the single-thread case so that's where I'll focus my attention for now. The more I think about it, I really ...

There's a regression function in one of the utility classes, I haven't played around with it yet though.

I thought calling super.repaint() would cause a repaint request to be enqueued in Swing Event Dispatch. I still think the code above should speed things up, but don't know why it doesn't. I understand that paintComponent() is the function that actually does the painting, but the reason it only takes...

Skunk, thanks for your response. I have already modified the library source code slightly. I do everything in one pass. Indeed, a better idea would be to save the image buffer and then only add on most recent updated points. This would save having to redraw the buffer everytime. However, normally JF...

I am trying to use JFreeChart to display several charts on one window. I would like to use threading to speed up the performance of my application. My first attempt was to pull out the buffered image rendering from paint component and put it in a separate thread. But it's not working out well. It's ...

What I really wanted to do was render 4 charts in parallel on separate threads. I thought I could render each of them separately and then simply add them to my window. However, doing that would disable the interactive charting features such as cursor and range zoom, correct? Can someone tell me the ...

Can someone tell me how to use JFreeChart to render onto a BufferedImage? I want to render several charts in parallel.

Each time I update my charts, I call several methods whether they need updating or not...just simpler than checking. For example, I may reset range, cursor, and others. I want to disable all notifiers so that the chart is not repainted after each individual change, but only once at the end after I c...

getCandlesticks() simply returns a ConstVolumeOHLCDataset.