回复： Re: How do I move over time to achieve waveform by waveformgraph in vs2003.net

[slave2]

How do I move over time to achieve waveform by waveformgraph in vs2003.net

like pic

[JonathanN]

Hi slave2,

You didn't mention what version of Measurement Studio you were using or what .NET language so I will be using Visual Studio 2005, Measurement Studio 8.1.2 and C# to address your questions.  Okay, so lets get started....

In order to get the behavior you are wanting, you need to consider 3 things:

1. The property configuration for the UI such that the axis labels display date/time information.

2. The property configuration for the UI such that the graph scrolls.
3. The conversion factor between date/time and numeric values.  However, since you are using the WaveformGraph, you can just use one of the PlotYAppend overloads that accepts a TimeSpan increment. 
   

You can configure the UI settings either at run-time or design-time. To get the scrolling behavior, you want to set the the XAxis.Mode property to AxisMode.StripChart. Then of course you would want to calling the WaveformGraph.PlotYAppend.

To set up the date/time information, you could do something like the following:  

// Configure the X axis to display date/time labels.
xAxis1.MajorDivisions.LabelFormat = new FormatString(FormatStringMode.DateTime, "h:mm");

Take a look at the Charting and PlotDateTime shipping examples for help.

Best Regards,

[slave2]

thanks for Jonathan N.
National Instruments R&D

i am using 7.1studio for vs2003.net ,

as same as this method to solution my question?

[slave2]

thanks for Jonathan N.
National Instruments R&D

i am using 7.1studio for vs2003.net ,

as same as this method to solution my question?

[JonathanN]

Hi slave2,

I'm fairly confident those properties existed back in the 7.1 timeframe but I'm currently not near a computer with 7.1 on it to validate my thoughts. Those properties I mentioned are fairly common so I would suggest go ahead and try it out.  If you have problems, let me know.

Best Regards,

[slave2]

Thanks for Jonathan N.

I try it.

another question is how i can show xAxis's Number   like the picture.

eg.

I set xAxis's range (3600, 7219) ,the first number show on the xAxis is 1:06:40 but not 1:00:00.

what should i do. it can show 1:00:00 first.