Just tried QChart 1.2.1 with Qt 5.0.1 and Visual Studio 2010, running in Windows XP. I need something for real time charting, and this seems to come close, but it is also pretty rudimentary in many respects. I am looking particularly at the QScatterSeries to make an XY chart that updates in real time (generally 100 points per sec). It needs to rescale the horizontal axis every once in a while as new data exceeds the axis limits. The current implementation appears to re-draw the entire series every time a new point is added, which makes it get progressively slower as 10s of 1000s of points appear in the series. My application would only need a complete re-draw when the axis is rescaled, and just draw the new points as they come in for most of the time.
Also, I would like a LOT more choices for marker styles (currently only 2!!) and the ability to use both lines and markers on an XY graph.
I do not see issues like these in the future directions posting on the project web page. What I see are plans for adding 3-D, and other advanced features. What I need is more work on the core. Is there a plan to keep making the core package more feature-rich? I do not see QCharts in the bug tracker either, otherwise, i would post these suggestions there.
I also looked into Qwt, the QChart graphs look a bit more refined and professional, and I like the idea of using a package that is supported by digia (or whoever owns/supports Qt at the time!).
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