how to plot multiple phasors on xy or polar graph

[Spikeman]

Hello,

I'd like to plot multiple phasors for 3 phase AC voltage and currents on an xy or polar graph. Anyone have an idea how to do this?

Thanks

[shahina]

Hello Spikeman,

You can plot to an XY graph using the PlotXY() function. Here is a link to an example program that illustrates how to use this function:
Graphing an XY plot in LabWindows/CVI

Regarding the polar plots, there are no native UI controls for them, but you can use a canvas control instead.
Also, there is an example program that illustrates plotting smith charts, located at C:\Program Files\National Instruments\CVI71\samples\apps\smithchart that you might be interested in. And here is a discussion forum thread that provides an example to convert between polar and rectangular coordinates: Polar plot in LabWindows.

Please let me know if you have questions on this issue.
Good luck with your application!
Shakhina P.
Applications Engineer
National Instruments