topic Re: Selecting plot in a Wave Chart in LabVIEW

Selecting plot in a Wave Chart

George7893 — Thu, 25 Aug 2022 09:52:14 GMT

Hi everyone,

I'm new in LabView, and I'm trying to plot several signals adquire by an adquisition device in a Wave Chart. I want to have different checkboxes in order to be able to select which signals are supposed to be represented. I made lots of test but it doesn't work in any of them. Now I have a structure event which uploads the Visible property of the chart with the value of the cluster of checkboxes (saw in a NI forum). In the while loop, the chart is continuously updating, but It doesn't plot the signals indicated by the cluster.

Thank in advance!

Re: Selecting plot in a Wave Chart

George7893 — Thu, 25 Aug 2022 09:55:21 GMT

I give a capture of the actual design.

Re: Selecting plot in a Wave Chart

GerdW — Thu, 25 Aug 2022 11:29:19 GMT

Hi George,

@George7893 wrote:

I give a capture of the actual design.

Why do you attach an image of your code? We cannot edit/debug/run images with LabVIEW!

Next time attach your VI...

Why don't you use the plot legend of your WaveformChart? Just display (and use) the plot visibility checkboxes!

Re: Selecting plot in a Wave Chart

daveTW — Thu, 25 Aug 2022 11:55:16 GMT

Note:

I think, it is not easy to find this feature. That's why a picture. Right-click on a plot description, not into the legend picture:

Re: Selecting plot in a Wave Chart

George7893 — Fri, 26 Aug 2022 06:35:02 GMT

The problem is that if I use the checkboxes from the legend then I couldn't use the signals of that checkboxes for anything else. So my idea was to make external checkboxes.

I attach you the VI

Re: Selecting plot in a Wave Chart

GerdW — Fri, 26 Aug 2022 07:09:26 GMT

Hi George,

@George7893 wrote:

The problem is that if I use the checkboxes from the legend then I couldn't use the signals of that checkboxes for anything else. So my idea was to make external checkboxes.

Well, you could read the plot visibility property.

This will give you the value of those plot legend checkboxes!