silken_solitude

Hey Frank, Thank for the quick reply! I tried what you suggested but Im getting an error. Heres a snippet of my code. On Timer tick: 'Plot on Chart 'Switch real-time styles once buffer is full If nOffset = BufferSize Then dataChart.RealTimeSettings.Style = SoftwareFX.ChartFX.RealTimeStyle.NoWaitArrow dataChart.Refresh() End If ''Set Communication Channel styles ''These COD values instruct Chart FX about the Realtime settings ''the chart, values and legend. Dim nCOD As SoftwareFX.ChartFX.COD nCOD = SoftwareFX.ChartFX.COD.XValues Or SoftwareFX.ChartFX.COD.RealTime nCOD = nCOD Or SoftwareFX.ChartFX.COD.ScrollLegend ''Add a point for each sereis to the right of the chart ''Using the legend property, set the legend values dataChart.OpenData(COD.XValues Or COD.AddPoints, 2, 1) dataChart.XValue(1, 0) = dataPoint dataChart.Legend(0) = Str(nOffset + 1) dataChart.CloseData(nCOD) nOffset = nOffset + 1 The Error: System.NullReferenceException was unhandled Message="Object reference not set to an instance of an object." Source="ChartFX" StackTrace: at SoftwareFX.ChartFX.DataArray.get_Item(Int32 index) at SoftwareFX.ChartFX.17.BeginLoop() at SoftwareFX.ChartFX.17.I3(IGraphicsEx 1N5) at SoftwareFX.ChartFX.Chart.DS(17 1CH, IGraphicsEx 1CI, Rectangle& 1CJ, Int32& 1CK) at SoftwareFX.ChartFX.Chart.DR(PaintBar 1CE, IGraphicsEx 1CF, Rectangle& 1CG) at SoftwareFX.ChartFX.0X.OnPaint(PaintEventArgs e) at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs) at System.Windows.Forms.Control.WmPaint(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(Form mainForm) at WeatherBalloonOperatorInterface.frmMDIContainer.Main() in C:\Project\Inco\WeatherBalloon\WeatherBalloonOperatorInterface\frmMDIContainer.vb:line 20 at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()

How to I change the series orientation? I would like to plot my data on the X axis as opposed to the default y axis. e.g. dataChart.Value(1, 0) = 32 plots 32 on the y axis. I would like to plot 32 on the X axis.