2d array indicator and its refnum

[labmaster]

Normally, some kinds of refnum are passed to SubVI.

Sometimes, I want to check the value of the refnum in programming for SubVI.

In case of 2d array, how to indicate the array value from the array refnum?

[altenbach]

Wire the refnum to a "value" property node to read out the 2D array value (all elements). (there is nothing special about 2D arrays, the same works for simple numeric, booleans, clusters, etc.).

Of course a 2D array has NxM values, so if you only want a specific element, use "Index array".

(and no, normally we don't pass refnums to subVIs except under very specific needs) 😉