Build An Array From An Array

[simply_me]

Hi Gerd,

I've just ran the vi that you uploaded and got 8 again, I don't know what cause the difference, but it's working with 15.

[GerdW]

Hi simply_me,

your "diff counter" still runs with dynamic datatype - as long as it is in this state I will not look into any details of this beast...

(DynamicDatatype is used by ExpressVIs, which I don't use for data manipulation - they hide too much information!)

Are you sure your "diff counter" works properly? And why do you get 9 "over limit"-events using a limit of 15 for blocks of 15 elements, when you only get 8 events with a limit of 10 for blocks of 20 elements???

[simply_me]

Hi Gerd,

I've modified the vi to be w/o dynamic data type. Now I'm getting 10 and 8 for the differential and sub array, respectively.

I'm curious as to why they never agree. The only reason that I can think of is that somewhere in those 20 elements sub arrays there are two peaks greater than 10 and it only picks one of them as Min & Max, but it doesn't look like there are any close proximity peaks....

[GerdW]

Hi simply_me,

you have an uninitialized shift register in your second counting loop - this can and will affect your results...

[simply_me]

Actually, it did make a difference of 1 count.

I'm trying to implement this algorithm inside a while loop, and instead of reading from a file to read a signal in real time. How would the vi change? I imagine that the for loop isn't necessary. So far I've having trouble limiting the array size to 20.

Thank you,

[GerdW · Accepted solution]

Hi simply_me,

the change in the attached VI will force the array size to less than 20... Don't know if you want to throw away all that data...

[simply_me]

Hi Gerd,

Thanks for the help.

I'm going to collect all the data in another array, but that'll be going to the initial problem of building a sub array in a while loop....