How to use SVX Create Waterfall Cursor VI

[jenz]

Hello everyone,

I'm trying to use the SVX Create Waterfall Cursor VI, but I can not configure it. In terms of the Cursor List the LabVIEW help is not very meaningful.

You find my example VI attached. Can someone please help me?

Thank you 

[dsb@NI · Accepted solution]

The example found at <LabVIEW>\examples\Sound and Vibration\Waterfall Display\Waterfall Display for Power Spectra (Simulated).vi is a better starting point for configuring cursors for the waterfall graph.

I modified your example by using the SVFA Power Spectrum instead of FFT Spectrum (Mag-Phase) and connecting spectrum info, reset waterfall buffer explicitly on first iteration, and wiring frequency to frequency cursor input. It doesn't matter what flavor of spectrum is calculated, but it is important to connect spectrum info from the spectrum VI to all downstream VIs that process the spectrum.

Hope this helps!

[jenz]

Thank you Doug 

[jenz]

It is possible to lable the line?

[dsb@NI]

Cursor labels are not currently supported in the waterfall graph XControl.

You could modify the XControl (either to add labels and/or give each cursor a new color), but that doesn't feel like a recipe for success.

You could add an indicator that you move (either programmatically or manually) to associate with a specific cursor. This could be very manageable if you expect to fix the perspective on the display.

How are you looking to use these cursors in your application? 

[jenz]

Trying to lable engine orders in a simple way. 

[dsb@NI]

I think this would make a great feature for the waterfall.