I have a chart that has different time intervals on the top and bottom axis. When the cursor is moved the e.XValue is returned for the bottom axis. How do I obtain the XValue for the Top Axis

Christopher

That seems to have corrected the problem, I am not sure I understand why I need to set min max a number of times to get it to work or if it should be done within the object if required.

Christopher

I set the points to on and click the Downsample on and off everything works okay. I set the points to off and click the Downsample on and off and I get the problem. I emailed you screen shots as well as the assembly that I am using.

Christopher

That corrects the issue with displaying the zero Point. Why is it when I set the Point.Active = false that the line series count goes to zero and nothing is displayed.

Christopher This is what I would have expected to see. If there were null points then the first null point would be displayed if not then would only display the first,last min and max Why in the sample I sent when I have points.active = false and I set the number of downsample points to 10 the serie...

Christopher I made some modifications to the program to try and describe what I am finding when I have a small sample size. I used the line instead of fastline as I wanted to see the line points. Issues: 1) If I do not display the points series only display the line series and its points when I chec...

Christopher With this sample I cannot get it to Unzoom, any idea what is missing as I have the times changed to ascending using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using Steema....

Christopher

If you are using Down sampling do you need to set the MinMax within the unzoom to reset back to the original view?

Christopher

That resolved the issue with the count being reduced as I zoom in. I now have an issue when I do an unzoom with the down sampling that the chart is not resetting the zoom.

Christopher

Sorry for not testing the downsampling method furthur and catching it for you.

Christopher

When I check the count after the zoom the count stays the same it does not matter how much I zoom in the count remains the same.

Christopher If I take the code I supplied you and modify it to add fastLine.XValues.DateTime = true; I do not see the count change as I zoom in, I also notice that you only set the downSampling.DisplayedPointCount = 1000; downSampling1 DisplayedPointCount is not set, is this correct. We do not know ...

Hi That corrected one issue now I seem to have a issue with zooming as it looks like the count on the points is not dropping as I narrow my zoom. I changed the sample to DataTime as this is close to what we are doing. As I zoom in I check the count on the fastline series and it is not dropping. Is t...

Christopher I did only some simple single series testing on the pre release version similiar to the sample. I started to roll out down sampling with my application after release and found the first series was not being displayed when changing the number of sample point so I modified your sample to h...

I modified the sample that you supplied with version 3 to contain 2 fastline series. What I am finding when I change the sample size is the first series has the correct number of points but the count on the fastline series is showing 0. The second series has the correct point count and number of poi...