Graph with labels in plot area - is it possible?

[Ghost.]

Hi all!

I  am going to show some CAN frames getting from a digitizer card connected to a CAN bus circuit and i need to mark the parts of the frame like arbitration ID, the stuffed bits etc as the attached picture shows.


Do You have any idea how could i solve this?

Thx in advance!

[Philipp N.]

Hello ghost,

I am sorry but at the moment it is not possible to mark the areas programatically. What you could do is, if the length of the waveform is constant, to load a picture as background for the graph that marks the different areas.

Best regards

Philipp N.

NIG AE

[Ghost.]

It's not a good news.
Thx

[Ben]

Have you looked at annotations?

Ben

[Ghost.]

Yes, but it marks only one point, not a range.

[Ben]

Then look into using the pciture control to render the image.

This thread has a lot of links.

http://forums.ni.com/ni/board/message?board.id=BreakPoint&message.id=14&jump=true

Ben

[Dennis_Knutson]

I came across this screen shot of an old VI that I did. Is this something like you want to do? If so, it will take me some time to come up with the code. I don't remember offhand how I did it.

Message Edited by Dennis Knutson on 12-08-2006 07:57 AM

[Dennis_Knutson]

It takes a while to get these old brain cells moving first thing in the morning. The graph in the screen shot is actually an xy graph on top of an intensity graph. The annotation is just a list of cursors

[Ghost.]

Thank You for your effort!

Best regards:
  Laszlo Gosztola

[altenbach]

If you have LabVIEW 8.0 or later, you can use the "plot Images: front|middle|back" property to draw directly on the graph area using any image commands. I think it should be quite easy to implement:

Have a look at:

• the section "Drawing to the Graph Plot Area" on: https://www.ni.com/docs/en-US/bundle/labview/page/customizing-graphs-and-charts.html
• Possibly you need to transform coodrinates: https://www.ni.com/docs/en-US/bundle/labview/page/mapping-graph-coordinates-to-plot-image-coordinate...

LabVIEW ships with two examples for this. Look for "envelope.vi" and "plot images.vi" in the example finder.