Is there a better way to build these arrays?

[RedneckNerd]

I am using Labview 2014 but it shouldn't matter for my question.

I am using a Labjack to monitor 20 digital inputs.  This is a common type of test setup for us.

Is there a better way to build these arrays to save space? 

In the process of thinking about this question, the second pic occurred to me.

I haven't tested it yet, but thought there has to be a better way than what I have been doing.

[Kyle97330 · Accepted solution]

For the first one, just wire out the iteration terminal directly, forget the shift register.

For the second one, use the "Initialize array" primitive to create a 20 length array with the same value.

[altenbach]

---

wrote:

For the first one, just wire out the iteration terminal directly, forget the shift register.

For the second one, use the "Initialize array" primitive to create a 20 length array with the same value.

---

And in both cases, remove the "build array" after the loop. Since both array are of the same size, a single FOR loop is all you need.

Depending on the desired representation of the blue array, insert a conversion bullet before the output tunnel.

[RedneckNerd]

Thank you.   Exactly what I was looking for.  I vaguely remember initialize array from class a couple of years ago!

I also found with my application I have to get rid of the build array.  As it creates a 2d array and I need a 1d array.

[RedneckNerd]

---

wrote:

---

wrote:

For the first one, just wire out the iteration terminal directly, forget the shift register.

For the second one, use the "Initialize array" primitive to create a 20 length array with the same value.

---

And in both cases, remove the "build array" after the loop. Since both array are of the same size, a single FOR loop is all you need.

Amazing the how I can miss the Forrest for the trees.

---

[aputman]

Build both arrays in the same loop.  Fewer functions on the BD.

[majoris]

Just wanted to point out that your shift register usage is probably not what you wanted (it'll produce an array with a single element). The answer above is good, but in the event that you want to save even more space, you can create a subvi for the top build array example. This is commonly called a range function such as in python (https://docs.python.org/3/library/functions.html#func-range). Matlab has someone likewise built in as a primitive (https://www.mathworks.com/help/matlab/ref/colon.html?searchHighlight=colon%20operator&s_tid=doc_srch...) as do many languages (especially vector heavy languages such as R). It's not clear to me that basic labview has this function built-in so it isn't a bad idea to build it yourself.

[RavensFan]

For building a sequence of numbers, you can use the Ramp Pattern function.

[altenbach]

---

wrote:

For building a sequence of numbers, you can use the Ramp Pattern function.

---

Useful for creating orange ramps. Overkill for integers 😄