How to use Scatter Graph to plot readings vs time

[Y_C]

I want to use the Scatter Graph to plot meter readings vs time. The time is the recent time obtained from the real time clock of the PC. I have set the XAxes[0].MajorDivisions.LabelFormat to Time in the property page but cannot show the actual time in x-axes (always shows 12:00 somewhat). Can any one advise me how to do it? Thanks.

YC

[nickb]

Hey YC - 

When you call PlotXY(Append), the xData parameter determines the time that shows up on the X-Axis.  If you begin at 0, you will begin at time 0 of the DateTime class - 12:00:00 midnight, January 1, 0001.  Perhaps the easiest way to get the current date and time is to use the NationalInstruments.DataConverter class to get the current date time.  It could look something like this:

scatterGraph1.PlotXYAppend(DataConverter.Convert<double>(DateTime.Now), data);

Let me know if you have any questions.

NickB

National Instruments 

[Y_C]

Dear NickB,

Thank you for your advise. Maybe I am using VB, in order to make it works, I need to modify the statement as follows:

ScatterGraph1.PlotXYAppend(DataConverter.Convert(DateTime.Now, GetType(Double)), data)

YC