This topic contains 8 replies, has 4 voices, and was last updated by  SankalpS 2 years, 9 months ago.

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  • #8886

    barrymac
    Member

    Hi All,

    How does wijmo render charts in IE8 in the abscence of SVG support? Is it using VML ?

    I’ve come on to a project which is using wijmo for a dashboard with quite a few charts. It has very severe performance problems in IE8. I’m wondering what is a good step down approach for this platform?

    #8889

    Richa
    Moderator

    Hello Barrymac,

    Our Wijmo charts are all powered by inline Scalable Vector Graphics (SVG) (http://wijmo.com/html5-charting-with-jquery-and-svg/).

    In case Wijmo charts are not working, try using non-minified version.

    Let me know in case your application doesnt work.

    Thanks,
    Richa

    #8892

    barrymac
    Member

    Hi Richa,

    Our application works but it’s very slow even on a high end workstation. IE8 doesn’t support SVG so I was thinking that Raphael.js is using VML to degrade for IE. http://en.wikipedia.org/wiki/Scalable_Vector_Graphics

    Would you have a stress test that I could try out perhaps? It could rule out the rendering in the case our code is the issue.

    Thanks,
    Barry

    #8914

    Richa
    Moderator

    Hello Barry,

    We need a little more information on the type of charts you are using and what type of data are you using. Is the performance of the same application better on IE9/Chrome/Firefox?

    We need to reproduce the issue at our end first before we can suggest anything. A small sample of your application would be great.

    Thanks,
    Richa

    #8988

    barrymac
    Member

    Hi Richa,

    Yes there’s a marked difference with IE8 specifically but we would like to improve the performance in general. Very kind of you to take a look at a sample for me.

    I’ve attached a zip file which should have everything needed to reproduce the issues. The things which appear to be taking the most time are the bar charts and switching tabs. There’s a lot of tables and these seem to take quite some time as well. Perhaps there’s some things we could avoid when using wijmo for grids ?

    In the attachment you can open the file server-free.html in the modules\mdpDashboard folder and that will bring everything else in.

    At the moment the javascript is broken into various scripts for the purposes of easier more modular development but we will probably inline and minify and compress all the javascript in production to reduce the server round trips.

    Thanks,
    Barry.

    #9039

    Richa
    Moderator

    Hello Barry,

    I have escalated this case to the development team for further discussion.

    Thanks,
    Richa

    #9042

    barrymac
    Member

    Thanks Richa!

    #18284

    Was there any resolution to this issue? I’m also experiencing a severe amount of slow rendering using wijbarchart, and wijpiechart in IE 8 native using version 20131.4

    #18404

    SankalpS
    Moderator

    Jon,

    Could you please try using the latest Wijmo build 3.20133.20 and check if you still face the same issue. You can get the latest references here. I checked the sample which is provided in this forum post and it seems to work correctly in IE8. If you still face any issues then you may want to attach your sample application here and we will check it out.

    Regards,
    Sankalp

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