How does waveform graph downsamples the data before it is plotted

[Norbert_B]

Oddly, i cannot post a VI here, so here the screenshot of the code:

You will see that several values of the plot are drawn on the same x-coordinate.

Norbert

[ejkaiser]

Andrej,

I don't think the waveform graph is downsampling. It either plots everything and x-values get rounded according to the available resolution or it plots minimum and maximum value inside each bin of available x-increments.

This way you don't miss events in your waveform

Cheers

Edgar

Edit: and Norbert just confirmed that it plots everthing!

[andrej · Accepted solution]

Here http://digital.ni.com/public.nsf/allkb/F694FFEEA0ACF282862576020075F784 is the answer - LabVIEW uses a max-min decimation algorithm to display data on a graph 🙂