Reading data points back off of a NiPlot

[Grant_LECO]

How do I get the x,y vaues back off my chart once I plot them? I can move the crosshair over the points and watch the x,y's update in edit boxes so I know that the points are still stored somewhere. Something like the following maybe?

XYArray = m_graph.GetPlots().Item("Plot-1").GetXYValues();

Yeah I'm dreaming about the GetXYValues function. Thanks in advance for any tips.

Grant

[Chris Matthews]

We don't maintain the data in the control after it has been plotted. This would be very inefficient memory usage and not a very good design for most application. For example, if you plot 10000 double values, we decimate that data down to the relevant information for drawing (pixels) and draw it. Maintaining the data for retrieval would mean an extra 80000 bytes of memory used by the control. Just keep the data yourself in a variable outside the control if you need to retain it.

Best Regards,

Chris Matthews
Measurement Studio Support Manager

[Grant_LECO]

Thanks Chris. That's what I needed to know. I'm glad you don't save all the points by the way. 🙂