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Line performance on 60000 points
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cpmbailey
#1 Posted : Monday, July 29, 2013 3:07:17 AM(UTC)
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Hi, I'm trying to do a 60000 point line chart but it is taking about 8 seconds to render. I noticed that the version on the sample is incredibly quick, but wondered if it was the nature of that data not fluctuating very much. The data I am using is very noisy and almost like plotting random floats between 0 and 1.

I was going to try implementing some LOD by saying we only have x pixels available and trying to truncate the data, but realise that this is probably what jqChart is doing already and will also mean I lose the zoom. Is there anything I can do to improve it?

Thanks
Chris
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Dragan
#2 Posted : Monday, July 29, 2013 4:19:07 AM(UTC)
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Is it possible to send us your sample, so we can look at it?
Best Regards,
Dragan Matek
jqChart Inc.
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cpmbailey
#3 Posted : Monday, July 29, 2013 6:41:27 AM(UTC)
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Let me do a bit more investigation. I think most of the problem might actually be server side

Thanks
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cpmbailey
#4 Posted : Monday, July 29, 2013 6:50:51 AM(UTC)
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Yes, it was mostly server side although I'm pretty sure it does get slower the 'noisier' the data is. So perhaps if you took the http://www.jqchart.com/j...rtPerformance/LineChart example and just did yValue = rather than yValue += in the for loop as a test.
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Dragan
#5 Posted : Wednesday, July 31, 2013 12:08:24 PM(UTC)
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Yes, the 'noisier' the data is, the speed will be slower.
Best Regards,
Dragan Matek
jqChart Inc.
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