Programmatically Resizing 'Decimate Array Function'

[adekruif]

Is there any way to Programmatically resize the 'Decimate 1D Array Function' or another way to do this (hopefully i'm not missing something easy)? I need to decimate a 1D array into "X" number of rows depending on "X" channels that were read in from a file.

For example, if I have an 1D array of length 18, and I read in 3 channels I would want a 3x6 array. If I have an 1D array of length 18, and I read in 2 channels I would want a 2x9 array. Any idea on how to tell Labview how many rows I need out of a 1D array?

It looks like in earlier versions of LabVIEW there was a VI that did what I am looking for. I have tried searching the pallette's and here on the forums as well, but haven't come up with anything that works.

http://forums.ni.com/t5/LabVIEW/Programmatically-Resizing-Decimate-Array/td-p/19880

Thanks!

-Andrew

[nathand]

The "Reshape Array" function will probably do what you want. Reshape your 1D array into a 2D array, then index out the desired column or row.

[adekruif]

The reshape array gets the array into the format I can use, but unfortunately it doesn't  sort the data the way I need it to. The reshape array takes "Length" and places it into the first row, the "Second length" goes into the second row and so forth. I need the first element to go into the first row, the second element into the second row, etc. This is how my channels get read in:

CH1 Value1

CH2 Value1

CH3 Value1

CH1 Value2

CH2 Value2

CH3 Value2

CH1 Value3

CH2 Value3

CH3 Value3

The decimate array did exactly what I needed it to, except I can't change the number of rows /columns if I read in a different number of channels. 

[RavensFan · Accepted solution]

Either swap the dimensions that you feed into the reshape array, or use Transpose Array.  Since I can't tell from the description exactly which way the array is wrong, one or the other of these ideas should fix it.