split array

[Stefano Moret]

Hi,

one question about arrays.

In my application I'm reading measurement data from a database in order to analyze them; they are ordered by date, and the user can select the period he wants to analyze.

When he selects, a query runs and put the data inside an array. I need to make calculations on the data, and show them on a graph grouped by day. For example, the user has selected a 10 day period, and I need to tell him, FOR EACH DAY, the measurements average and show him the average graph. 

What should I do? Split my array into several (but I don't know how many)??

Any idea? 

[Darin.K · Accepted solution]

Here is a starting point for you.  I don't know how you handle the time format so in my example the first column is just an integer number.  The second for loop sifts through and averages the values for different days (any time there is a different value in the first column).  It is a bit stream-of-consciousness, so double-check for bugs.

[Stefano Moret]

I gave a look at it.. It seems exacty what I need. Tomorrow I'll try and tell you (it's 3am in China now!).

Thanks a lot, man.

[Stefano Moret]

Ok, you had a good idea for the average calculation 🙂 I was thinking about it from yesterday!

Where did you find the point by point mean function?

[Baji]

http://forums.ni.com/ni/board/message?board.id=170&message.id=414625#M414625 try this link to find the pallet a function belongs to?

[Darin.K]

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Stefano Moret wrote:

Where did you find the point by point mean function?

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I think the previous post shows you literally how to find it.  The harder question is how did I know that it existed.  The answer to that is mostly from poking around the palletes with a sense that since I had already written a similar VI myself and used it so often that NI must have gotten around to giving us something similar, and as usual they had.