topic Re: 2D Array in LabVIEW

SUM in array

frhnnmhd — Mon, 15 Aug 2022 03:37:04 GMT

Hello Everyone, i'm making sub vi , to find the area of a signalafter cutting the thresholdbefore cutting the threshold

Re: SUM in array

altenbach — Mon, 15 Aug 2022 04:18:35 GMT

Do you want to exclude the signal that is inside the threshold, i.e. set these values to zero?

Should the negative values have a negative or positive area?

Do you want a separate output for the negative and positive parts or combine it all?

We recently solved a very similar problem. Try to find it. No matter the requirements, the solution will be trivially simple.

2D Array

frhnnmhd — Mon, 15 Aug 2022 04:20:20 GMT

hello everyone, I'm making a sub vi, to find the area of a signal, this program is my project to implement wheelchair movement using open bci from human brain signals. so in this program I want to cut the signal using a threshold, then I will add up the obtained signal later, from the signal that does not pass the threshold it will be worth 0, the value of 0 is also a separator to be able to increase the value of the signal that passes the threshold.
Now I'm having trouble summing up the signals. so can someone help me?
Now I'm having trouble summing up the signals.before cutting the thresholdafter cutting the thresholdthe data i want to achieve

Re: 2D Array

altenbach — Mon, 15 Aug 2022 05:49:04 GMT

(Sorry, I don't have LabVIEW 2021 on my current computer. consider "save for previous" before attaching.)

See if this discussion can give you some ideas. Problem seems almost identical, except that you seem to subtract the threshold values from each side, making the absolute peaks smaller accordingly.

Re: 2D Array

frhnnmhd — Mon, 15 Aug 2022 12:38:12 GMT

oh sorry, This is for the 2018 version of Labview

Re: 2D Array

altenbach — Mon, 15 Aug 2022 14:37:31 GMT

This is basically the exact same code that was posted in this thread . Where did you get it from? (And why do your controls not have typical default data for testing?)

Did you even try my solution??? It should work with no to minimal change.

Re: 2D Array

altenbach — Mon, 15 Aug 2022 14:47:04 GMT

From your image, it seems you want B rather than A. Is this correct?

Re: 2D Array

frhnnmhd — Tue, 16 Aug 2022 02:11:48 GMT

yeah that's right

Re: 2D Array

altenbach — Tue, 16 Aug 2022 15:03:15 GMT

So use my code and subtract the threshold from each sided data before summing. Should be trivial to do. Have you tried?

Re: 2D Array

altenbach — Fri, 19 Aug 2022 15:37:15 GMT

Did you figure it out?

Re: 2D Array

frhnnmhd — Fri, 02 Sep 2022 08:42:09 GMT

I have tried your program but I have a problem with the addition, I want when the data that passes the threshold value will do the sum then when the data after that does not pass the threshold it will be a reset value to add up next when it exceeds the threshold again