Independent PtByPt calcs on array's elements

[Blokk]

Hello,

I have a double array as an input, and at every iteration of the main VI, I would like to calculate mean and standard deviation separately on all the elements using PtByPt VI.

Fortunately in my case I know that, the array size is maximum 11. My solution works, but I would like to know what is the best approach if I have to deal with a larger array, and especially if I do not know the max size in advance...

Here it is my solution, and the VI.

thanks!

ps: i renamed the VI extension from vi to vit to trick the buggy uploader... 😞

[Dennis_Knutson]

The case statement can be removed. Your for loop is auto-indexing the array so all you do is place the function inside it. The case statement is just not required.

[crossrulz]

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@Dennis_Knutson wrote:
The case statement can be removed. Your for loop is auto-indexing the array so all you do is place the function inside it. The case statement is just not required.

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Dennis, I think you misunderstood the issue.  I thought the same thing until I realized what they are doing.  Think of reading a single sample from 11 channels using DAQmx.  Now perform a standard deviation on each of the channels over time.  This is a tough one.  I'm not sure how I would handle it differently.

[Darin.K · Accepted solution]

It is not too difficult to modify the 'PtByPt' VIs to be RowByRow by changing the state data.  But I would probably go the dynamic route first if I knew the number of columns where bounded by a reasonable number.

[Blokk]

Thanks, I never needed such dynamic call so far, but it is nice to learn something new 🙂

I guess this approach creates N number of memory copies (where N is the size of the input array in my case, 11) of the PtByPt VI, and use them independently?

regards,