I am using TeeChart WPF version Build 3.5.3470.15475. My dataset: 32K points * 100 traces Using FastLine series with DrawAllPoint = True. Downsampling is set to 4000 points. Case 1: No performance hit I can plot these data as a single fastline series with no performance problem. That is I can decima...

Hi,

I am facing a bug in the UndoneZoom event of the Tee chart.

In the event handler of UndoneZoom when I am trying to access the Minimum and Maximum of the Bottom Axis, it gives me the Minimum and maximum of the Zoomed state. Is that a bug in the TeeChart?


Regards,

Rajesh Dhiman

Hi ltang, Thanks for the example project. The problem there is that your X values are descending. While when only adding Y values TeeChart automatically adds sequential ascending X values. DownSampling was not designed to work with ValueLists that were not ascending. I'll add your request to the wi...

I have sent source code to public.attachments. The code tries to show problem of downsampling. Look forwards to your comments. Thanks. Hi ltang, Thanks for the images but could you please arrange a simple example project we can run "as-is" and let us know the exact steps we should follow to reproduc...

Hi ltang, Thanks for the information but we are not able to reproduce the issue here. Would you be so kind to send us a simple example project we can run "as-is" to reproduce the issue here? You can either post your files at news://www.steema.net/steema.public.attachments newsgroup or at our upload...

Actually I have found that the problem in DownSampling.cs where Tolerance is calculated based on DisplayedPointCount. if (DisplayedPointCount > 0) { tmpTol = DisplayedPointCount / 4.0; tmpTol = N / tmpTol; } when the array XValues is not specified, e.g, series.Add(YValues), the N in the code above w...

I am using: Release Notes 23rd September 2008 TeeChart.NET version 3 Build 3.5.3188.18562 Points rawSeries = new Points(); Line reduceSeries = new Line(); tChart.Series.Add(rawSeries ); tChart.Series.Add(reduceSeries); DownSampling sampling = new DownSampling(tChart.Chart); sampling.DisplayedPointCo...

Hi, I setup two series as below: DownSampling sampling = new DownSampling(); Point s1 = new Point(); Line s2 = new Line(); chart.Add(s1); chart.Add(s2); s1.Add(xValues, yValues) s2.DataSource = s1; s2.Function = sampling; Should I change the the bold code to s1.DataSource = yValues (i.e. not to spec...