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I'm trying to use the nodatamessage to show an empty chart when there is no data. When I call ChartUtilities.writeChartAsPNG(outputStream, chart, 1024, 768) I get an IOException. This same output code works fine when the chart contains data. Code: JFree Chartchart = ChartFactory.createTimeSeriesChar...

David,

Assigning a new renderer to each dataset did do what I wanted. The colors are now all unique.

Thank you,
Dan

Anyone have a good solution to this problem? I'm making simple TimeSeriesCollections with one or more datasets each and assigning each of those to their own Range Axis on a TimeSeriesChart. Doing that causes the colors to start over for each TimeSeriesCollection, which is against what the developers...

I did the same thing overriding the numbertickunit. Basically override the "valueToString(double d)" function in there and have it output the string you are looking for. Then I create a new TickUnits object and load it up with the new NumberTickUnit that I created for the values I want displayed and...

That wasn't very descriptive. What exactly do you mean by equal?

I can't think of a graph where I would want the X and Y axis to be "equal".

Sounds like no matter what your dataset is you'd always have a diagonal line

I too am in the environmental business of sorts. We have wind, temp, humidity... etc. type sensors that get readings whenever they change. This leads to about 1000-200000 readings per day depending on the environment and which sensor it is. I don't really have a problem with things going from 0 to w...

Just bouncing this to see if there has been any progress. Still looking for a usable solution to fix the issue where it redraws on a click.

Thanks again,
Dan

So what is the recommended method to remedy this. I am not using crosshairs so I have no interest in a redraw when the chart is simply clicked on. I don't really think running it in a thread will help much either since I really don't want it even attempting to redraw unless the size changes or a zoo...

After a little more messin around it looks like it's attempting to redraw if I click on the panel without dragging the mouse. If I click on the panel and drag the mouse to the upper-left it will not spike my CPU unless it needs to zoom out, but if I click and don't drag my mouse I get a CPU spike, e...

Based on what David said the chart shouldn't attempt to redraw if nothing changes. So that does sound like a bug, especially if you've noticed the same thing. I am drawing many large plots on the same chart. Could be upwards of 50 - 1000 point plots of xyplot or stepxyplots. I am limiting the number...

Sure. Basically the chartpanel is being created when a plugin is openned. After that it is placed inside of another jpanel using borderlayout so I can have some extra information at the top. I keep this set to invisible since I seem to get problems with it attempting to draw a blank plot. I have jus...

There is one thing really keeping me from being able to use this library. I am charting multiple datasets with around one thousand data points each. If I have anymore than 2 of these on the screen at the same time redrawing the window, or even simply having a popup menu on top of the graphpanel take...