LabVIEW
referencing an element from cluster
VeeJay wrote:1. How do you typecast the cluster element to numeric class? I have exhausted options and came up with the one I did to reference each element.
Use the To More Specific Class function:
2. Well, DBL's because these are calibration co-efficients and I want upto certain decimal places.
I don't undertand what this means. Do you mean that you need a fractional index? If so, then you need to use Threshold 1D Array followed by the Interpolate 1D Array or you can use the Interpolate 1D VI in the Mathematics palette. The datatype of the index values have no bearing on the actual data of the elements.
4. ___________________________________________________________________________________________rather than using Index Array like that I would use an auto-indexed for-loop and place the reading of the value in the loop. That way it's there just once, and it's scalable. The way you have it, if you add a control to the cluster you have to modify the code
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I want these values in one shot. Isn't this simpler than using a for- loop? Or am I missing something here? And I don't get that you meant at the end reg. cluster control.
The point of using a for-loop is so that you don't have duplicate code. Look at the code you originally had. Now look at this:
Which do you think is more scalable? 
5. I had 5 outputs and I just chose the biggest connecter pane because my final program is way too big. 🙂
And you are spot on, on your guess. I will be doing way more than what this simple eg. suggests. This is just my way to clarify my understanding and get the concept right.
Then perhaps you should be outputting an array rather than individual elements. Wiring to that gargantuan connector pane is close to impossible. In all of the VIs I have written in my time (which is literally thousands), I've used the standard 4-2-2-4 about 99% of the time. For the rest, I've used a more dense connector about 0.1% of the time. The rest has been smaller density to make small icons.
@ Lynn.I am modularizing my code, so I am using references from main vi into the subvi for computation and then passing them back to main. What you said is good when I am reading them in the same vi. Also, how did you typecast the property node to Cluster 'strict'?
Lynn has already answered your question, so let me impart a tip on you for creating references for subVIs: On the higher level VI create the reference. Then, drag the reference terminal from the block diagram of the parent VI onto the front panel of the subVI. Done.
