Draw million points line in WPF

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2.50/5 (2 votes)

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I want to draw the line containing nearly 1000000 points and also wants to do this rendering within 1 second.
Could you please suggest how i can draw high performance line in wpf.

What I have tried:

I tried PolyLine, StreamGeometry and also tried DrawingVisual, but these classes takes several seconds to draw line with just 50k points.

Posted 14-Aug-16 3:21am

RhishikeshLathe

Updated 14-Aug-16 7:24am

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Philippe Mori 15-Aug-16 19:59pm

As you cannot see that much lines at once, one optimization is to display only lines that actually matters (start and end points are different pixels) or you might merge consecutives segments that are almost in line. Or do some kind of filtering... Or buy a chart package designed to handle very large data...

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ridoy · Answer 1 · 2016-08-14T07:24:00

Solution 2

You may find some efficient approaches from here:
c# - Most performant way to graph thousands of data points with WPF? - Stack Overflow[^]

Posted 14-Aug-16 7:24am

ridoy

Comments

Maciej Los 15-Aug-16 4:42am

5ed!

ridoy 15-Aug-16 14:12pm

Thank you. :)

Patrice T · Answer 2 · 2016-08-14T03:53:00

Quote:
I want to draw the line containing nearly 1000000 points and also wants to do this rendering within 1 second.

Don't do it !
Instead, draw the data 1 time, take a picture, save it on server, and just send the picture to the client.
Another way is to reduce the number of points to speedup rendering.