Manual LU Decomposition in Labview

[mohd04]

Hello. So I am trying to do a project in labview where i Recreate LU-Factorization in labview where I use a 3x3 matrice array and where it manually caluates and spits out the L and U matrices separately. In this project i am trying not to use the built in funktion library that automatically does LU- Factorization. I am trying to implement the algoritm my self manually. I have come quite far but am not really understanding what I am doing wrong because it is partially spitting out the correct values in the L and U Matrices. Any idea what I am doing wrong?

[altenbach]

The same problem has been posted 4 days ago on reddit.

I would recommend to also place the built-in function on the diagram and connect it to the same input so you can see what parts need fixing.

So. let's look at your attached code 

• Your Vi is broken and cannot "spit out" anything in its current state.
• Your input 2D array (not a matrix!) is empty and I would recommend to fill it with some reasonable default values.
• I assume you found reasonable documentation about the algorithm you are trying to implement. You should place a link as diagram comment.
• Most people here don't have LabVIEW 2025, so I recommend do save for previous (attached is your unmodified VI in 2015).