Performance issues panning a bar series chart on a device

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  1. Alex
    Alex avatar
    6 posts
    Member since:
    Jun 2011

    Posted 03 Apr 2014 Link to this post

       We have this kind of a chart (see the attached). It consists of about 500 bars but eventually it's going to be around 5000 - 20000 bars and then I'm afraid we'll face a serious performance issue. Currently the chart is zoomed about 1.3 by X (DateTimeContinuousAxis). The initial rendering works rather fast on the emulator and on a device (visually a little slower on a device but the difference in negligibly small to measure). Panning is fast on the emulator but there is performance issue on a device. When you touch the chart and try to slide it right or left it is not responsive. You can move your finger a quarter of the screen width and then it moves with a jump. On the emulator everything is nice an smooth.
       The question is if there is an approach to speed up the panning on a device, may be a caching mechanism or something?

    Thank you,

  2. Victor
    Victor avatar
    1358 posts

    Posted 08 Apr 2014 Link to this post

    Hi Alex,

    Thanks for writing.
    We will see what we can do on our side to improve the performance in such a case but generally, the chart was not designed to display a huge amount of data on one screen. You can quickly different smaller amounts of data as demonstrated in our examples app. For this to work we will probably need some sort of data averaging algorithm.

    Thank you for understanding.


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