Why Do I Need This Case Structure

[paul_a_cardinale]

Without the comparison and case structure (i.e. just using the path out of the invoke node), it works OK when Path In is any of:

• instr.lib
• Anything under instr.lib
• user.lib
• Anything under user.lib
• vi.lib

but not when Path In is:

• Anything under vi.lib

Does this seem sensible to anybody?

[Martin_Henz]

Hi Paul,

Replace the BasePath with a paths constant "<>:\" and start testing 🙂

Have fun and let us know the result.

This Invoke node seems a bit idiosyncratic to me. I have made a note sometime ago, that it seems to work well with an idiodic BasePath. Something like "<>:\" or "<abc>:\

I never examined it in detail.

[paul_a_cardinale · Accepted solution]

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@Martin_Henz wrote:

Hi Paul,

Replace the BasePath with a paths constant "<>:\" and start testing 🙂

Have fun and let us know the result.

This Invoke node seems a bit idiosyncratic to me. I have made a note sometime ago, that it seems to work well with an idiodic BasePath. Something like "<>:\" or "<abc>:\

I never examined it in detail.

---

Using either "<>:\" or "<abc>:\" causes it to always give the wrong answer.

[Kyle97330]

When using the VI those appear to have "standard" property node appearances, it looks like those are both private methods not intended to be used by users.  I can find no help files, and the two Wiki entries for them both are light on details except for them being private:

https://labviewwiki.org/wiki/LVTarget_class

https://labviewwiki.org/wiki/LVTarget_class/Convert_to_Symbolic_Or_Relative_Path_method

So I would speculate that the actual reason is "because it needs to work like that for the internal NI methods that use this to work right".

[Martin_Henz]

Kyle97330 might be correct.

It seems to work perfect here on my PC (Windows 11, 32 bit labview 2021 - 21.0.1f2)

I have attached a modified VI using "<>:\" for the BasePath and removed case structure. The defaults of "Path In", "Symbolic Path" show what I see after execution of this VI.

Path In: 

C:\Program Files (x86)\National Instruments\LabVIEW 2021\vi.lib\Utility\Sync.vim

Symbolic Path:

<vilib>:\Utility\Sync.vim