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New version of Chrome causes unwanted shading and lines to appear in graph #605

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
Flot version: 0.7
OS: Windows 7

I recently noticed unwanted "shading" and extra "lines" appear randomly on my 
Flot charts since Chrome updated a few weeks ago.

Sure enough, I cannot repeat this under Firefox, and when downloading an older 
version of Chrome, this issue is not present.

Please see the attached screenshots where I test different versions of Chrome 
with the same Flot chart.  See how Chrome 13 (older version) looks normal while 
the newer versions have strange shading and lines?

I was unable to replicate this under Firefox.  Firefox loads the Flot chart 
just fine.  I was also unable to replicate this using Windows XP and Chrome 15. 

Has anyone else experienced this?  Any advice or suggestions?

Original issue reported on code.google.com by madk...@gmail.com on 25 Sep 2011 at 5:08

Attachments:

GoogleCodeExporter commented 8 years ago 
another screenshot of whats happening in Chrome 14

Original comment by madk...@gmail.com on 27 Sep 2011 at 4:37

Attachments:

GoogleCodeExporter commented 8 years ago 
I am experiencing similar problems in recent versions of chrome, especially on 
large datasets.

Original comment by torhv...@gmail.com on 29 Sep 2011 at 8:58

GoogleCodeExporter commented 8 years ago 
Also happens to me with Chromium 15.0.871.0 (Build 99583 Linux) - Ubuntu 11.04.

Original comment by fras...@gmail.com on 4 Oct 2011 at 8:34

GoogleCodeExporter commented 8 years ago 
Can be merged with: http://code.google.com/p/flot/issues/detail?id=610

Original comment by nosebone...@gmail.com on 7 Oct 2011 at 11:10

GoogleCodeExporter commented 8 years ago 
I am also experiencing this problem with chrome 15.0.874.106 and windows 7.

Original comment by ThaiTra...@gmail.com on 9 Nov 2011 at 8:08

GoogleCodeExporter commented 8 years ago 
I'm also experiencing it in Chrome 16.0.912.63 on Windows 7.

Original comment by blairbod...@gmail.com on 29 Dec 2011 at 10:44

GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 
I think the problem exists regardless of lines or bars.  Check out the 
screenshot above "chrome14_flot_issues.jpg".  Thats a line chart with no bars.

The issue seems to appear consistently when using a version of Chrome newer 
than 13.x to display a flot chart drawing a large dataset.

Original comment by madk...@gmail.com on 31 Dec 2011 at 12:47

GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 
Any suggestions for this one? Seems like a pretty serious problem.

Original comment by garth.p....@gmail.com on 5 Mar 2012 at 1:24

GoogleCodeExporter commented 8 years ago 
Issue 610 has been merged into this issue.

Original comment by dnsch...@gmail.com on 2 May 2012 at 12:31

GoogleCodeExporter commented 8 years ago 
So far I haven't been able to reproduce this on Chrome 18, even with series of 
several thousand points.  Can you confirm that this is still present in the 
latest version, and provide some more info on the data you're plotting?

This feels to me like a bug in Chrome's canvas implementation, but I could be 
wrong.

Original comment by dnsch...@gmail.com on 4 May 2012 at 8:12

GoogleCodeExporter commented 8 years ago 
No follow-up; marking as invalid.

Original comment by dnsch...@gmail.com on 4 Jun 2012 at 2:34