Can't concatenate arrays

[MIG]

Hi,

I have been converting some old LabVIEW 4.1 VIs to LabVIEW 8.20, and have run into a problem with one of them.
A Build Array function which worked fine in LabVIEW 4.1, can no longer be set to concatenate inputs in LabVIEW 8.20.
I thought something might have gone wrong during the conversion process, so I started rebuilding the VI from scratch, but the problem is still there in the new VI.
I can get around the problem by putting the build array function into a sub-VI, where everything works fine, but I'm curious to see if anyone else sees the same problem, or if it just something wacky in my LabVIEW installation.

Attached is a VI with a snippet of code which shows the problem.

Cheers,

Mark.

[altenbach]

Yes, I see the same problem.

(Curiously, concatenation is allowed if you initialize the shift register.)

[Matt_W1]

It's also allowed if you make the first input to build array the last. No idea what's causing it though.

Matt W

[angelo]

I just ran into this problem. What is going on here?

I was trying to concatenate two i16 arrays and the only way I could force it was to wire in an empty array at the beginning. Only then would build array switch into concatenate mode!

Is this a LabVIEW bug?

[CharlieM]

This was reported to R&D (# 4IH5S4B7) for further investigation. Thanks for the feedback!

[hgregg]

Was this issue ever resolved? I'm using LabView 8.5 and seem to be having the same problem with the Build Array function as descibed in this thread.

Hg

[Coq_Rouge]

My solution to this problem is to select concatenate when the function only have 1 input and is not connected to anything. The funny thing thing is that after this the function works as it should. You may resizes and select options as you want

[RavensFan]

I am still seeing the issue with that specific VI in LV 8.6.

[NAKeel]

This issue is still occurring in LabVIEW 8.6.1.  The corrective action request is still active, and R&D is aware of the problem.  Right now I recommend continuing to use the work arounds that have been presented in this forum.