Hello. In my code I have 6 Boolean arrays. I did a Build array to join these arrays into 1 because I am sending them into a subVI (I did not want to send 6 arrays into the subVI). When I did the Build Array, I right-clicked on the output of it and clicked on All Controls & Indicators. LabVIEW made a 2d "Appended Array" indicator. Why did LabVIEW make my 1-d arrays into a 2d array? Build Array was in Append mode. Four of the Boolean arrays are indicators, while the other two Boolean arrays are controls.

@Dhouston wrote: Correct. We had thought that Build Array would just join the arrays together into one, basically putting them in sequence. It seems we have the wrong concept of what append and concatenate actually do. Yes, apparently you do. In append mode the 1-D arrays are treated as elements of the array that you are building. So if you build an array in append mode from two 1-D arrays you will get a 2-D array. If you build an array from two individual elements you will get a 1-D array.

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Build Array converted 1-d arrays into 2-d appended array. Why?

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That is a good explanation of append. So in concat mode, the arrays would be treated as individual elements and thus united into a 1-d array, while in append mode the arrays are treated as part of the same array.

I think part of our confusion was that we would see Build Array seem to automatically adjust itself to whatever put into it -- and it would usually work without us having to change the mode. So if we did mixtures of arrays and constants, or arrays and arrays, Build Array just always came out correctly. We didn't really understand the mechanics, so this explanation will be a big help to us in understanding just what is going on.

Thank you to all for your great advice.

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Build Array converted 1-d arrays into 2-d appended array. Why?

Re: Build Array converted 1-d arrays into 2-d appended array. Why?