I have a 2D array of 50 columns wide, I want to split it in 2 so that I can calculate the average of one half.

[SS_01]

I have a 2D array of 50 columns wide, I want to split it in 2 so that I can calculate the average of one half.

Is there a quicker way, except from;

Read spreadsheet file, Index array for each column I want (25 of), build these back into an array and out put to an indicator.

My program is included.

[Marc_A]

Yes, there is.  Using Array subset, you can output any block of that original 50 column array.  I changed what you posted and attached what you need to split it into 2 arrays.  Read more in the help for Array Subset.

[SS_01]

Oops, sorry I forgot to mention I am using LV7.1, can you re-save for v7 for me, thanks.

[Marc_A]

Hmm, I thought I did.  Sorry about that.

[SS_01]

Thanks, I would never have figured that out!

[Marc_A]

No problem, that's what the forum is here for.  Glad I could help.