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 Detection of Triggerjump in datasets		  New Topic  Reply to Topic
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JimThieser

10 Posts
Posted - 03/01/2021 :  3:15:49 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. and Service Release (Select Help-->About Origin):
Operating System:

I together,
I am working with large datasets (600000 rows). Here i have a period trigger signal between 0 and 5.
Is there any function to detect the jumps quickly and get me the rownumber as out put?

I am working right now with an easy loop and compare two cells...
but that takes ages....

Thanks...

YimingChen

1668 Posts
Posted - 03/02/2021 :  3:55:50 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Can you try using Python script in Origin worksheet Set Column Value dialog, see the example below to detect the rising point of the signal.

import numpy as np
def get_trigger(ll):
    ll = np.array(ll)
    result = np.where(np.diff(ll) > 3)
    return result[0].astype(float)+2




James
Edited by - YimingChen on 03/02/2021 4:01:45 PM
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minimax

359 Posts
Posted - 03/02/2021 :  8:31:57 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi JimThieser,

Does your signal contain pure 0 and 5 numbers? Or there is some noise?

Would you mind to check if you can send us a sample file so that we can check further?

You can click the "Send File to Tech support" link text on the top right corner to send the file.

Max
OriginLab Technical Support
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