Hello, I'm using VS2008 SP1 and TeeChart 4.0.2009.28593 I've created a control using TeeChart, but when adding the control to a form I get an error with CustomPoint -- "CustomPoint is not marked as serializable. I've created a small example that shows the problem. Drag the "Tester" tool from the too...

Thanks Yeray for that example. It seems to work well. I'll do some further testing. Can you explain how DisplayedPointCount works? There's no documentation at all on it in the help file. Is it the number of data points the function down samples to? So, in your example code and for my 1300 data point...

Hi Narcis, I've created a small example for you. It's created using VS2008 and TeeChart 4.0.2009.28593. This example only has 1300 data points but it shows the problem well. Just resize the main form and you will see the graph change. I'll now look at the Down Sampling example you suggested. Thanks

OK, I'll take a look at that example.

Also, I'll create a simple project. I'll do it next week as I'm very busy at the moment.

Best regards

Hi Narcis, Thanks for your reply. Our data is collected in real time. 1 to 10 points per second for a total time of up to 1 hour. I've attached an image to show you some typical data. Each series may have 2000 - 60000 data points. If I use DrawAllPoints=false then some of those spikes on the green s...

That's not good. I was hoping it was the second. The graph will not accurately represent the data. It will appear to the user that some data points are lost. Then as they zoom in the data will change, only to disappear again when they zoom out. What's the time schedule for correcting this bug. Thanks

Hello, I hope someone from Steema can clarify what the DrawAllPoints = false property does in the Fastline series. The help file installed with version 3.5 and 4.0 says, "When false, it only draws the first point at any X pixel location" However, on the real-time article it states that; it "groups t...

Hello, I've modified my code to match yours. I've added the AutoRepaint false/true and the tChart.Refresh() line after adding all the points. I've removed the RefreshSeries line. This seems to have improved things. I've been testing it all afternoon and no freezes yet. I'll continue testing over the...

Some extra information, in case it helps:

The Steema.TeeChart.TChart.AfterDraw event is not fired when the chart freezes.

Thanks

Hello, I'm having major problems using the FastLine series to display real time data. The chart keeps on freezing. Data seems to be adding to the chart OK, but every so often the display freezes. Forcing a refresh by resizing the window causes the data to display correctly, only for the same thing t...

hey, I've got a normal tchart with one line added to it and filled with sample values, and the legend has checkboxes. Now if i uncheck the checkbox, the line disappears, and so do the axis labels and title. At this point, is there any way of telling if this has happened, i.e the labels/title or even...

Hey, I've created a custom axis and 'attached' a series to it, but when I click on the legend to turn it off (via the checkbox), it doesn't seem to turn the axis title off? public Form1() { InitializeComponent(); tChart1.Aspect.View3D = false; tChart1.Legend.CheckBoxes = true; Steema.TeeChart.Axis c...

Hey, I've got a DrawLine tool on my chart whereby i'm manually giving it coordinates to draw with. Trouble is, when I zoom in, it disappears. Can you reproduce?? public Form1() { InitializeComponent(); Steema.TeeChart.Styles.Line line = new Steema.TeeChart.Styles.Line(tChart1.Chart); line.FillSample...

Sandra,

Yes, that works. The only thing I had to change was the MouseDown lines.
Regards

Chris

Hey,

is there any [easy] was to clip any custom stuff added to the chart? i've got some text on there drawn with e.rotatelabel, but when you scroll the chart it appears outside of the main chart area, so i'm wondering if there's a way to clip it?

regards,

chris.