Waveform chart

[JasonMa]

Hello,

I'm new to Labview and have a question about waveform chart/graph. 

I'm trying to show the data from DAQ in a waveform chart. But for now I have no DAQ yet, and try to use sine waveform vi to feed in a waveform to waveform chart. I want to get the effect like real world that signal updated with the time going, just like 5 sec long sine waveform takes 5 secs to show up. What I got is like it shows all 5 secs waveform in one go.

I tried three update mode in waveform chart, but it looks like no effect at all.

Thanks

Jason

[altenbach]

if you have code that is not working the way you want, you need to attach it so we can see what's wrong.

In particular, if you want the data to update one point at a time forever, you need to generate it one point at a time and not 5 seconds worth at once.

[JLanzagorta]

Hello Jason,

First of all, do not worry about not having a physical DAQ device, you can always simulate it using NI Measurement and Automation Explorer (AKA: NI MAX) and have the benefit of unlocking block diagram functions that require NI hardware to be plugged in. To learn more about this, refer to this link.

Additionally, as Altenbach mentioned before, if you want the data to update at the time it is being captured, you need to generate it one point at a time, and not X seconds worth of data, otherwise, it will take X seconds to update.

Best regards.