Timestamp not showing up properly in waveform graph.

[zomboy_]

Hello,

I have started using labview only couple of weeks before so forgive me if my question is stupid.

I am plotting a waveform graph from a quantity measured in real time. I take samples every three seconds and append them to array in a while loop using a shift register. On each iteration of the loop I pass this array to my waveform graph. Everything works great.

Now, I changed the X-axis to display absolute date and time. I set the offset value and multiplier at the start of VI and then plot a sample every 3 seconds. I want to show minor ticks on the X-axis, but they are not showing up. I have minor ticks and values enabled in the X-axis properties.

What am I missing?

[GerdW]

Hi zomboy,

welcome to the forum!

Well, you miss to attach your VI…

[zomboy_]

Well, it's very big and messy. But this is what I am doing basically.

[Norbert_B]

Does the VI you attached show the same behavior? I don't see anything "suspicious" and all major ticks have their text. Minor ticks have no text.

Norbert

[zomboy_]

Yes.

[GerdW]

Hi zomboy,

I can also state as Norbert did: everything is nice at it should be…

On your VI: instead of using the value property of the graph you should initialize the shift register! And you should set XAxis.Factor too…

[zomboy_]

I am on LabVIEW 2009 v9.0 if that has something to do with it.

[GerdW · Accepted solution]

Hi zomboy,

your LabVIEW version could be related to this issue. With LV2014 everything is nice…

Try something like this:

Don't forget to switch OFF "ignore timestamps…" in the axis properties!

[Norbert_B]

Your screenshot shows a different graph than the VI you posted contains:

a) Scale configuration (autoscaling, scale setting)

b) Position of the graph itself

But if i change a) in the VI to match your screenshot, i still see the text next to the major ticks.

Do you execute the VI from within a project?

Also please note that i'm using LV 2014 while you are using 2009. Can you double check with a more up-to-date version of LV if you can reproduce the issue there?

Norbert

[zomboy_]

Thank you for your prompt replies. This seems like a version issue to me. I ran the same thing on LabVIEW 14 and everything works great. I guess I need to figure out something else.