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alsan
#1 Posted : Wednesday, March 19, 2014 8:47:11 AM(UTC)
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Hi, I'm evaluating the jqChart for our next project (which is a Phonegap project, majorly in finance area), and trying your zoomable with 60000 points example in the samples section of the site.

The samples works great in PC, but not so good performance in mobile, and sometimes with a buggy rebound when draging the slider (I belive which is caused by the mouse event handling).

As my understanding, the whole chart would be redraw during data points updating. Is there any plan to improve the performance by implementing some kind of redraw algorithm, such as copy and move unchanged area and redraw only the changed parts? And if so, when will this happen?

Anyway, jqChart is the most usable solution in this area I've ever seen so far. It would be a total solution for any device if the performance issue has been overcome. Needless to say this is important, as we know, more and more share is going to the mobile device side.

Best Regards,
Alsan.
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Dragan
#2 Posted : Thursday, March 20, 2014 7:49:16 AM(UTC)
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Hi,

Yes, the performance of such sample on a mobile device is not so good. We're using HTML5 Canvas for rendering and we need to redraw the chart when it is changed. We can't simply "move" the graphics.

We do have plans to improve this performance, but this will require a lot of changes and I can't promise you when it will be ready.
Best Regards,
Dragan Matek
jqChart Inc.
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1 user thanked Dragan for this useful post.
alsan on 3/20/2014(UTC)
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