Best practices for the handling of data for a large number of indicators

I'm looking for suggestions or recommendations for how to better manage a user interface with a 'large' number of indicators. By big I mean enough to make schema-block big enough and ugly after that the processing of data for each indicator is added. Data must be 'unpacked' and then decoded, for example, Boolean, binary bit shifting fields, etc. The indicators are updated once / sec. I'm leanding towards a method that worked well for me before, that is, binding network shared variable for each indicator, then using several sub-vis to treat the particular piece of data, and write in the appropriate variables.

I was curious what others have done in similar circumstances.

Bill

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I highly recommend that you avoid references.  They are useful if you need to update the properties of an indicator (color, police visibility, etc.) or when you need to decide which indicator update when running, but are not a good general solution to write values of indicators.  Do the processing in a Subvi, but aggregate data in an output of cluster and then ungroup for display.  It is more efficient (writing references is slow) - and while that won't matter for a 1 Hz refresh rate, it is not always a good practice.  It takes about the same amount of space of block diagram to build an array of references as it does to ungroup data, so you're not saving space.  I know that I have the very categorical air about it; earlier in my career, I took over the maintenance of an application that makes excessive use of references, and it makes it very difficult to follow came data and how it got there.  (By the way, this application also maintained both a pile of references and a cluster of data, the idea being that you would update the front panel indicator through reference any time you changed the associated value in the data set, unfortunately often someone complete either one or another, leading to unexpected behavior.)

Tags: NI Software

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