How can you ensure that boxplot series on different axes have the same width?

Hello,
Did you solve the AccessViolationException? We have a similar issue…. not exactly the same stack but also an AccessViolationException happening around AxisPanels (very similar to yours!).

This happens on some of our clients computers but not all of them (and we don’t have the exception happening on dev laptops). We also tried to create a small sample application replicating the issue without success.

Here is our stack (part of it) when this exception happens:

System.AccessViolationException: Es wurde versucht, im geschützten Speicher zu lesen oder zu schreiben. Dies ist häufig ein Hinweis darauf, dass anderer Speicher beschädigt ist.
bei gzj.uop(HandleRef ikr, Int32 iks, Int32 ikt)
bei SciChart.Charting2D.Interop.SCRTWPFInterop.CreateRenderTarget(TSRRenderingPipeline _pRenderingPipeline, Int32 _iWidth, Int32 _iHeight)
bei req.mdp()
bei req.mdq()
bei qus.vae(ren q)
bei res.BeginFrame()
bei SciChart.Charting.Themes.AxisPanel.vwf(Image bu, TickCoordinates bv, Single bw)
bei SciChart.Charting.Themes.AxisPanel.vwe(Image bp, Size bq, TickCoordinates br, Single bs, Boolean bt)
bei SciChart.Charting.Themes.AxisPanel.DrawTicks(TickCoordinates tickCoords, Single offset, Boolean isSoftwareMode)
bei SciChart.Charting.Visuals.Axes.AxisBase.OnDrawAxis(TickCoordinates tickCoords)
bei SciChart.Charting.Visuals.Axes.AxisBase.OnDraw(IRenderContext2D renderContext, IRenderPassData renderPassData)
bei llm.mgw(ISciChartSurface gt, IRenderContext2D gu)
bei llm.RenderLoop(IRenderContext2D renderContext)
bei SciChart.Charting.Visuals.SciChartSurface.DoDrawingLoop()

edit: forgot to mention we are on the last available release -> 8.6.0.28199

Hi,

no, we haven’t found a solution for this. SciChart team needs to fix the bug. We are only using SciChart.8.2.0.27935 version. There are no memory leaks or access violations with this version. We will not update until this issue is fixed, but with 8.2.0.27935 version, only one Y axis can be displayed for the box blot as mentioned in this issue.

I have created a new issue for the access violation:
https://www.scichart.com/questions/wpf/accessviolationexception-on-unloading-scichart

Unfortunately, we don’t have time to create a sample project at the moment, as these issues are not easy to reproduce in a simple application. On the other hand, access violation bugs can also be found via static code analysis and with appropriate tools.

I created a sample project reproducing the issue and wrote to the support.
Hopefully a solution will be found (alongside with the outofmemoryexception https://www.scichart.com/questions/wpf/memory-leak-when-using-visualxcceleratorengine#sabai-entity-content-18692)

Steps to reproduce:
1) Open solution in vs
2) Launch in debug
3) Wait (should have the exception after max 2-3minutes)

Hi Tobias, AC42admin LMB,

Hope you are doing well.
Please be informed that the mentioned AccessViolationException issue has been fixed in the recent SciChart Hotfix build v8.6.0.28230.
The changes are also available in the latest SciChart v8.6.1.28250 Hotfix version.
Here you can find how to get it:
SciChart WPF Changelog – SciChart

Please try it out and let us know your feedback.

Kind regards,
Lex S., MSEE
SciChart Technical Support Engineer

Hi Lex,
We tried with the latest version available on myget, we still have the same issue.

Hi Tobias,

Hope you are doing well.
I discussed the reported issue with our team.

SciChart v8.5 or earlier has a known issue that when a RenderableSeries has a single data point it would render a thin bar.
This is going to be fixed in the next version of SciChart (v8.6)

Could you please tell if the mentioned issue matches the one you currently experience?

Kind regards,
Lex

Hello Lex,
thanks for the info. It seems to work with version 8.6. Unfortunately I can’t fully confirm it, because now when adding data or emptying the chart an AccessViolationException occurs.

regards,
Tobias