How to change end markers programmatically?

[ww.brown]

I have a LabVIEW 7.1 application that programmatically modifies the markers on a graph using the MarkerVals property.  When I upgrade to LabVIEW 8.2, the end markers are no longer modified.  How do I resolve this?

W. Brown

[NIJanell]

Hello Mr. Brown,

Interesting problem.  Has any of your code changed after recompiling in 8.20?  If you cannot find any changes, I would like you to try running the VI in highlight execution mode.  Does the section that is supposed to update the markers run?  Are all of the markers, but the last one, updating?  Pictures of both your front panel and the relevant section of block diagram could be useful.

Let me know how it goes.

Janell Rodriguez | Applications Engineer | National Instruments

[ww.brown]

Thanks for your post.  I will extract the relevant code and post a 7.1 and 8.2 example.

W. Brown

[ww.brown]

Run Graph Test 71.vi with LV 7.1 followed by Graph Test 82.vi with LV 8.2.  Changing the "Points" input causes different results.  WB

[NIJanell]

Hello Mr. Brown,

I appreciate you uploading your code.  However, if you would please answer my questions from the previous post (does that section of code run in highlight execution?, etc) I will be more easily able to help you.

Thank you,

Janell Rodriguez | Application Engineer | National Instruments

[ww.brown]

Now that I have sent you the source, wouldn't it be easy for you to verify highlight execution mode?  The two versions of source (2 very simple VI's) are identical.  They don't produce the same front panel result when the Points control is modified.  There must be a compiler change going from 7.1 to 8.2 that causes the different result.

WWB

[altenbach]

I agree something seems broken in 8.20. (Or the behavior has simply changed ;)).

As a workaround, you can just set the axis max and min in addition to the markers. Seems to fix the problem. (See attached image).

Message Edited by altenbach on 10-05-2006 04:21 PM

[ww.brown]

THANK YOU!!  I had forgotten about these properties and will implement the workaround ASAP.   I will post this on LAVA as a possible problem with 8.2.

Thanks again.

WWB

[NIJanell]

Hello Brown,

Thanks for pointing out this behavior.  I have submitted a corrective action report to R&D.

Thanks!

Janell Rodriguez | Applications Engineer | National Instruments

[Ben]

" I have submitted a corrective action report to R&D."

.... and the CAR# is ?

Ben